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Joe Davis
There has never been a great technology that has not had a significant drawdown in stock prices. Which is code word for saying what some would say. There's a bubble forms. We're having economic growth projections that are 50% above the consensus. Our projections are AI is going to affect 80% of the occupations at twice the rate of the personal computer. In four years the personal computer took 15 either. The trend for growth is going material higher because of the innovation of AI that overcomes the demographics and the debt levels we have. That is by far our most likely outcome. But if AI only manifests along certain techno, if it only automates, which means it has not become a general purpose technology. We use it all, but it's like the farm tractor. That would be disappointing. And then that sets into motion this eventually, not today, not tomorrow. But you get fiscal pressures because they're already high.
Matt Zigler
You're watching Excess Returns, the channel that makes complex investing Ideas simple enough to actually use, where better questions lead to better decisions. I'm Matt Zigler. Justin Carboneau is co hosting with me today our guest global chief economist and global head of the Investment Strategy group at Vanguard. Down the street from me in Pennsylvania, author of the 2025 bestseller Coming into View, How AI and Other Megatrends will shape your investments. Joe Davis, welcome to Excess Returns.
Joe Davis
Ah, thanks for having me. Pleasure to be here.
Matt Zigler
I was telling you before we started recording, it's worth saying it. If you haven't seen a copy of this book, make sure you check it out. I think of the books that my team at Sunpoint or RAA like all held up and said, this is really, really cool. This book is one of them. Thank you for writing it.
Joe Davis
Well, again, we didn't, we didn't aim to write a book. At least that wasn't the goal. Our goal was to try to get a handle on where AI could go several years ago and how would that would compete with some other serious trends which we're going to probably talk about today. And again, all the proceeds from the book go to charity. But if it's helpful for audiences, really smart audiences, but perhaps not reading economic white papers every day, that was the goal, was to make it as accessible as possible to a really smart and savvy investment aud succeeding on all rounds.
Matt Zigler
So I'm taking you right here first, which is basically one thing I love about your work is the embracing of quantitative frameworks and not in the, not in a way that loses touch with reality. So how should investors think maybe differently about macro when they zoom out to that long term lens? Because you see it kind of in a unique way. And a lot of professionals, they just underweight the slow moving nature the way you approach this.
Joe Davis
And I think that was, you know, was even a learning to myself. And I've been in the business, you know, over 20 years. I think there's a standard approach which looks at the near term economic contours of the data. You can think of GDP or the inflation rate, what the federal funds rate may be doing. And then, and then of course there's a mapping, you know, implicit mapping or explicit to the bond market and the stock market. We do all that. But what we've added and what we spent some time, which is behind the book in the analysis is looking at the evolution of these longer term trends too. And what I found fascinating is that when those trends start to change, which can happen on a regular basis, they themselves affect the near term, not just Some long term assumption that say, hey, I'll worry about that 10 or 15 years from now, it affects the business cycle. And so what we concluded two years ago with AI is that that was going to have implications not just for the next five or 10 years, but it was going to affect the economic growth projections and everything we care about in 2027, 2028. And so here we are. So that's been the eye opening is that integrating them, they tend to be separated in an academic sense. The near term business cycles like the Federal Reserve asset prices, which all of us care about as asset allocators. And then this long term trends are kind of, sometimes kind of left to the side or just thought loosely, what we did is just simply integrate them in a numerical way. But that's affected our approach to not just our long term assumptions, but our near term ones for the next several years.
Matt Zigler
So let's talk a little bit about the four structural drivers that are in this megatrends model you guys came up with. Technology, demographics, fiscal deficits and globalizations. Walk us through the framework.
Joe Davis
Well, and again that's taken some of these long term trends which we all know exists. I mean we didn't bring anything new. We certainly didn't make up these factors. They've been known for over a century that they can impact long term standards of living, long term economic growth. I mean you can't talk about long term productivity and standards of living without talking about technology. And yet they're just again parked to the side when you think about hey, what's my outlook for the next year, the next two years? And so we brought them in those four. It's effectively, it's a fancy way for saying that their supply factors and demand supply, the supply of workers and people. So that's demographic factors, the agent of society, immigration, you can think about that. Globalization factors again can be in the headlines. It's the openness to trade. It's also tariff rates. And then you also have, you know, it's the rise of China into the World Trade Organization. That's what's behind globalization. So as you can imagine they have cyclical effects. They can also affect the long run or medium run trajectory of growth and inflation and interest rates. And then finally the biggest one by far is technology. And what I'm proud of is that we look at through the lens of three factors of technology. Its ability to substitute for human work, so automation, the ability to augment to make us better. You can think of copilot much like the personal computer for some Jobs, that's augmentation. And then third, which is really the magic. And we don't see that from every technology. That is the technology becomes a platform to enable new products, new industries. Electricity and personal computer were great examples of that. Internal combustion engine. And so again we brought all those frameworks into the modern era. And then looking at AI and its ability to affect the world economy on all those three facets and that's, that is novel. That's generally not done even from central banks and practitioners in something that's really integrated in our system.
Matt Zigler
Is technology the proverbial one megatrend to rule them all or is it just right now?
Joe Davis
No, it really is. I mean, what I was fascinated, for example, is so what we are doing is all these factors are moving all the time, along with GDP and inflation, stock market, interest rates, they're all coexisting, I think of a living, breathing system. But because of that we're able to attribute or assign what's pushing up and down growth at any point in time. We look at, we look at back over well over 100 years because great technologies only come around every so often. And what I was shocked to find is, for example, that, that that growth has been low, generally speaking, or has been slowing over the past two decades in nearly every economy we looked at not just because we have fewer people entering the labor force, the agent of society. It's more importantly because we've had a lack of automation in a service based economy. So that, that's important because given what the work we did on AI, we immediately thought, you know, before we brought data to bear, that AI could significantly lift growth over and above expectations because the lack of automation, if AI could help automate it, would actually push up growth without needing new people or the same amount of people that we saw say in the 50s and 1960s. So again, we have to. But the data is keeping us honest rather than we did not want to be in the narrative business or hey, it's Joe's personal opinion that AI could be transformational. So it's. AI certainly is. Technology is by far the biggest one, but it has to evolve in a certain way because there's significant liabilities in nearly every economy we look at on the other side, you got aging enough societies, look at the demographic patterns in China, you got de globalization or the threat of de globalization and you got the rise of debt levels in nearly every economy around the world. Those would all seem negative for growth and potentially push up interest rates and inflation. And so that's why the system is effectively doing a horse race and depend on the signals of AI. Could that offset and would it do it in a certain way that would be positive for growth in labor markets or to be disruptive that that is what we're quantifying in our framework.
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Matt Zigler
Jobs A fascinating and when I say fascinating I do mean, I mean utterly fascinating point that you bring up is that changes in megatrends explain roughly half of the S&P 500's quarterly movements. Yes, this is a wild long term means short term. This is not the Harry Dent demographics thing.
Joe Davis
Yeah.
Matt Zigler
This is about 25 years ago.
Joe Davis
Well, and I was shocked to find I did not know this. So like again, what's standard in macro? And I would say asset pricing is the short term fluctuations in gdp for example, it's what, what what some central banks would argue is all called demand. So in other words, if GDP is going up, it must be consumers are spending more, hence we got to raise rates. What we find is that that's half that's true half the time, but the other half of the time it is the emergence of new ideas. It's investments rates accelerating because the trend is likely to change in productivity, in innovation and can drive earnings power. And so that's what you're saying. And so half the time it's not necessarily and that has different implications for if growth and earnings are rising because what effectively is the supply of ideas is increasing. That means that inflation ultimately will come down. It means interest rates may not rise with debt levels and you can support higher valuation. So again, it's that horse race of the two and we have them competing in real time all the time. And that was eye opening to me. I thought all the near term volatility in stocks, in GDP was the so called business cycle is just purely demand. But if you think of commodity prices, I think any commodity trader would say yeah, but it's also the supply of oil that affects the price of oil, not just, you know, how many, how much we're driving on the road. And so it's in one sense it's natural, yet it's not generally under done. In my practice and again we weren't looking for this finding but it is honed how we approach forecasting and that's why we published a lot of this work, is to hopefully other researchers could build upon it, make it even better. But it has certainly changed not only our view but our approach to forecasting.
Matt Zigler
And I think that going into any conversation, especially the end of the year when we have these about year ahead forecasts or capital market assumptions, this is a really valuable input and you stumbled across it.
Joe Davis
One again, we're looking at every horizon, right? I mean, you know, when we talk, when you think about capital market assumptions, at least historically in our publications we've tended to focus on 10 years. Now why 10? We're forecasting stock and bond returns, interest rates, currencies at every month infinitely in one sense, the computer can keep going. We focus on 10 years in part because valuations can have some predictability. But in our outlooks for capital markets they do vary by the horizon and AI is going to play into that. You know, it suggests that AI could very well, you know, increase earnings, but it could depress valuations. Could still mean there could be a modest headwind over the next five to 10 years. However, because our economic growth projections are so high relative to consensus over the next year, it means that there's, believe it or not, there's upside risk to the equity market. So I'm, I'm, I might, I do not intend to be dissonant. It's a matter of the horizon over which we're planning. I think as an asset allocator, I think you have to take about the short term and the long run. There's a stronger signal for stocks in the long run. But, but, but they're not a market timing tool and that's why we say everything in moderation. With respect to this, I view our framework really as a scenario analysis and where the risk that we're trying to mitigate for clients rather than trying to, you know, look around every corner. Because no one, even our, even with our sophisticated models, we will certainly not be able to do that.
Justin Carboneau
Joe, where do you think we are sort of in the innings here? I mean, in, in some ways, you know, if it's a mega trend, then you would expect there to be sort of some like long Runway. But do you have any sense around, like what inning we're in? I mean, in some ways, you know, people look at the market and say we're in a, we're in a bubble when they see some of these, you know, trillion dollar companies or prices. But on the other hand, you know, if it's a mega trend, then that means there's probably a long Runway here. What are your opinions on that?
Joe Davis
Yeah, and again, it's a great question. It's a tough question, understandably. I'll give you what all of our data suggests, and that is we have investment rates going back 130 years across all the great technologies in the world. And that's one of the reasons it took, we really spent some time on this. So we have the deepest data set, to my knowledge, on the evolution of technology in macro at a high frequency. If you look at those projections and where we currently are in investment rates, because investment rates is a good example, you can compare that to the railroad, to electricity. You know, a lot of transformative technologies. It suggests we are, we're certainly not done. If I had to use a year, I would put economically we're in the 1996, 1997, meaning the full build out. If you use 1999, ergo is the peak. The markets seem to be ahead of that. But it suggests to me that the momentum in the market could really run. I mean, we're having economic growth projections that are 50% above the consensus. We have 3% economic growth for 2027 with zero contributions from demographics and zero contributions from globalization. That shows you how much lift we're expecting from automation and augmentation through AI. But we haven't seen it yet. It's just, it's anticipatory. So I'd say we're still in the build out phase at some point. Every great transformative technology has led to two things. One is an eventual rotation in the investment opportunities because we go from buying the technology to implementing it. And then secondly, you have a rash of new entrants and then you have a, you have a period of consolidation. There has never been a great technology that has not had a significant drawdown in stock prices, which is code word for saying what some would Say there's a bubble forms. I always hesitate to use the word bubble. And for this precise reason, it's because you could lead to significant market overvaluation. The market could consolidate some point in the next two or three years. However, if I said the word bubble, I think some listeners would associate that potentially with tulips. In other words, there's no intrinsic value other than looking at a picture of a flower we're talking about. Most of these technologies ultimately rewire the economy. So in that sense it wasn't a bubble. Yet you still have a market consolidation for a time in the stock market. And that's where the economic transformation and the equity market performance. Divorce, divorce during great technology periods for a time. And we're going to see that very likely happen again. That's what our analytics strongly suggest and that's our theme. In the near term, we could have significant momentum, particularly in the mega cap US growth space. However, if I'm managing risks in client portfolios as well as trying to harness AI's payoff, it starts to push you outside of the very area that's getting the most attention now because it's starting to. You're trying to get ahead of what that second phase of AI would be. And again, it's tough, but that's what I talk a little bit in the book. It starts to push you outside of the mega cap growth area. Not because we're skeptical of AI, it's actually quite the contrary. But there is a timing element to this. So again, bottom line is if you had a pin me to the wall and say a year, it's not 1999 because of the economic build out. It's still significant. We're still in the learning by doing phase. It's moving quickly. But I would say our projections are AI is going to affect 80% of the occupations at twice the rate of the personal computer. In four years the personal computer took 15. So it is fast. We've done this at every occupation. We have 800 occupations. We've been looking at this for a decade and we're monitoring it in real time. So we're not seeing the disruptive. Both saving time and some job loss. But that's going to come. It'll benefit more jobs than it'll eradicate, which is why we don't have a mass dystopia. But nevertheless we will see transformation and disruption that's greater than personal computer. That's how we get high growth. So we still have several, probably two years at least of that. At some point, however, the market will continue if we're right. My worry is that it continues to run on an explosive basis and that sows the seeds for eventually some market consolidation. I can't tell you, no one can say the year, but I don't use the phrase bubble yet because we're still in this build out phase which probably has another year or two to go if our projections are right.
Justin Carboneau
What would be those second areas of the market that may be sort of some of the biggest beneficiaries of AI in phase two? Like where would you be paying attention to? What would you be looking at?
Joe Davis
So this is what I found fascinating with some of our research things I didn't know. We look back at all the technology, great technology cycles. What, what, what I, what I found fascinating is that at some point during the great technologies as they truly transform what's called general purpose technology, at some point the benefits to stock investors accrue outside of the technology space itself for two reasons. So the biggest beneficiaries are the users or adopters of technology that have unmet need. Areas where there's unmet needs, high cost to serve or new platforms emerge that unleash new revenue opportunities, effectively new fields or industries for electricity. The example I talk about in the book is the entertainment industry. Without electricity, we don't have movie theaters, we don't have household products like vacuum cleaners. Electricity didn't create any of that, but we would not have had those products, those. So it pushed you outside of electricity and utilities. The, per. The, the, the car did the same thing. You know, it unleashed opportunities in retailing, not just in auto manufacturing. And so what we are looking for again areas where there's, there's potentially labor shortages, difficulty, difficult difficulties in scaling unmet needs, which means people would buy more of the product or service if the cost came down. And so areas that immediately rise to the fold are in the service sector of the global economy. If you use the United States in leading in areas include healthcare, they include financial services, including advice, you know, like RIA services, they would include education and in other business services, these are areas that are going to see some automation effects. However, there's also going to be the potential for a wealth effect as consumers wish to buy more, businesses wish to buy more of those services but at a lower price. And so that they're the areas. And by the way those sectors, those that are publicly traded are generally not in the growth or so called tech space. The Internet did the same thing. I mean some of the biggest beneficiaries were now consumer, you know, consumer products, you know, areas that sold things over the Internet rather than Internet service providing. And so that's what our analytics suggest. I can't prove to you it's going to be healthcare, but if I had to overweight one sector of what AI could potentially boost the most, it would be things such as financial services, not only just to reduce the cost, but the ability to unleash new products and services and then healthcare. Those would be the two leading candidates in my book. Which is why it tends to push you ultimately into value based orientations. Not because, and the primary reason is not because AI is overvalued. It's because the benefits start to transmit to the whole economy, which is why it's a general purpose technology.
Justin Carboneau
One of the things that you focus on in the book is sort of the fiscal challenges that we face as a country and that like you said earlier, all over the world, you know, high levels of debt at the country level. And I'm, I'm kind of wondering like in some way, you know, if AI actually delivers on growth. It kind of makes the kicking the can down the road just continuing to happen. You know, it's funny, like I remember, I don't know if you guys remember like the Simpson Bowles like proposal where they were trying to do.
Joe Davis
Right, yeah, 2011, 2012. Yeah.
Justin Carboneau
And you know, we don't hear about that really any of that stuff anymore. So in some ways, you know, AI is going to be possibly great in a lot of ways and good for our economy and good for growth. But maybe in some ways it's not going to allow us to get at some of the root cause of these fiscal problems. I don't know what you think of.
Joe Davis
Well, and that's where we get these non consensus outcomes. Outcomes. Our most likely outcome is that AI is more transformative than the personal computer. I mean that's our baseline and it's coming from the analytics of our projections. It's not my opinion, as we mentioned before. So we already have a very differentiated, I mean our neck is out there. But I feel good because we're using data to bear. We have growth projections that are the highest in any consensus survey. But that allows us, to your point, to kick the can on fiscal deficits. What happens in our scenarios that structural deficits are so called the sustainable fiscal deficit, which is high in peacetime. We're close to 6% deficits to GDP. And this is with an economy expanding, you kind of hover in a 4 or 5% range. If growth goes from 2% in the US to 3%, you get higher tax revenues higher and allows you to forestall it. We saw this in the 90s, in fact, in the late 90s we actually turned into surplus. Our projections generally don't show that because of the agent of society, which we also have in our projections wanting to push the deficit up. And so you can see the importance of AI in trying to forestall these fiscal pressures. Which is why, you know, in one sense I'm cheering for AI to be as transformative as it is along all three dimensions. If we're wrong in our projections, it's that AI only automates. We don't get augmentation, so we don't become better as workers. It just saves us time. So much so that we have some job loss. In some professions we have seen technologies like that. The assembly line was one, the farm tractor was the other. You know, forgive the 100 year old examples, but it was true. If AI only automates, again, that is not our likely. That's the second most likely, but it's not nearly as likely as our baseline. It's half as likely. The fiscal deficit issues come into the fore again in about two or three years because you have growth. The AI build out still occurs, but the 3% GDP fades back after kind of the initial build out. We don't get the new industries that our projections generally anticipate and we get less benefit for us as workers. And so what happens is trend growth doesn't ultimately change. We get this little, I'll call it a sugar high for two or three years and we fade back down. Now you have a structural deficit that's going to 6% to 8% to 10% deficits to GDP because the aging of society and our fiscal commitments, Social Security, Medicare, Medicaid. And so what happens is now you start to get pressure on our currency, you start to get pressure in the bond market and you have the Federal Reserve trying to fight those inflationary pressures and they're forced to keep interest rates higher than they would to keep long term interest rates kind of low. But there's fiscal pressures. And so that's this economic scenario I don't like talking about, but that's really in the book. I call it Deficits Dominate. If I was writing the book today, I would just call AI only Automates because it's the same scenario. And so again, deficits are a serious issue. So I wouldn't want to portray our deficit issues are like, there's not a problem, it's just that Deficits are conditional and other things going on in the world. And so we could have five or 10 years where they don't materialize in terms of higher interest rates and so forth. And we have seen it before, but it does rest on AI becoming a general purpose technology like the personal computer. And it's got to augment our work, it can't just save us time.
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Matt Zigler
I want to take you back onto some of the quant sides of what you just said because there's a few more stats that really I think are eye opening. 2% growth and 2% inflation going forward. You said a 10% probability of being correct and then I'm lumping in too much. But you're going to unpack these together on the deficit point, a 20% probability that the 10 year treasury yield could reach over 9% in the next 5 to 10 years if AI disappoints. These are not your standard consensus takes here.
Joe Davis
No, and again we weren't. Again, I was not. And we were not at Vanguard looking for this economic diagnosis. I was very comfortable in my 2% growth, 2% inflation planning world. It always seems made sense to me. We may get a little bit of technology lift. Yeah, but we got all these negatives that we mentioned before on the other side. I wasn't taking it not seriously. I always thought 2% growth, 2% inflation. I fill out these consensus surveys. That was our forecast until this work. What it's been eye opening through the data is that it's just very difficult to generate that sort of steady state status quo forecast because of the push or pull. Either the trend for growth is going material higher because of the innovation Of AI that overcomes the demographics and the debt levels we have, that is by far our most likely outcome. But if AI only manifests along certain, if it only automates, which means it has not become a general purpose technology. We use it all, but it's like the farm tractor, that would be disappointing. And then that sets into motion this eventually not, not today, not tomorrow, but you get fiscal pressures because they're already high and other things would have to occur. But we saw a little bit of this with. So again I don't that you know, that's, that's more scenario planning and like sort of stress testing our portfolios should, should that scenario occur, it's not nearly as likely as our baseline, which is, you know, AI transforms but, but this is client portfolios where they have fixed income exposure, equity exposure. We want to look at that. Now the ironic thing is that in our simulations what's the optimal investment strategy if we go down this disappointing AI only shaves jobs and doesn't make us more productive. Iron, you mentioned higher interest rates. However, it would push you into fixed income. Actually if you're trying to optimize and avoid that world, shorter duration fixed income. Why? Because you have given that interest rate reset at some point for a temporary period. You have equity market that has significant drawdown risk. You're talking about a world where AI has not become a general purpose technology. That has led to massive earnings disappointment in the US equity market, particularly in the large cap growth universe. And so you have a higher discount rate or the pressure for that. You have higher short term interest rates and you don't have the earnings growth and you have the earnings multiples coming down in that world. And so that it's trying to, it would push you into fixed income only because it's trying to mitigate some of the drawdown in U.S. stocks. So it may seem counterintuitive. Hey, in a fiscal pressure scenario you actually want to go into short duration fixed income. It's a gap. But most clients have exposure risk to equity market drawdown. And so it's going defensive in that way. So it may seem counterintuitive, but the broader risk is an equity market. Again, this is a world that AI flashes brilliance but ultimately only automates because the higher we have higher unemployment without the growth lift from new stuff. And again, it's not a scenario I like talking about, but it is, you know, that's that 2025% probability. It pales in comparison to our baseline, but it's the second most likely outcome. And we, we have the data to look in real time is to say which. Where is the, where are the winds blowing right now? It's still tracking as AI will, will. Will transform along three dimensions. But two of them we haven't seen yet, the augmentation and the, and the new industries, we haven't seen them yet emerge.
Justin Carboneau
What type of things would you be looking at to get a sense that that augmentation implementation is actually starting to bear fruit? Like where what would you be paying attention to in the data?
Joe Davis
Some lead indicators that, that I would be looking at that everyone could look at would be three come to mind. One would be, you know you're going to see disruption in the labor market. However, if you're going to see job loss it would generally be older workers, not the new entrance college graduates which a lot talk about. Why that would be is that you still have new tools being adopted and so you would have. But if augmentation is still winning, it means that new entrants to the workforce, I mean let me be honest, they're not as expensive and there's an ROI to them. Embracing these AI tools as a compliment, not just as a substitute. You would see new business creation not just in the tech field, not just in Silicon Valley. You would start to see massive job create or job or just startup creation outside of AI startups so which have been massive 4,000 or so the past three or four years. You would start to see it in areas I mentioned before. It could be in healthcare, it could be in finance because that's where the diffusion now we're starting to see that the sort of green shoots of these new fields, emerging new platforms, new applications that are revenue producing, not just cost savings and that's the key. And then finally there would be headlines in the news somewhere that a new product, a new solution has been discovered by human beings using AI. So not just solving math problems which is very nice, but say a new medical treatment for example comes up in part because AI tools were powered with say medical professionals. And so again I'm just trying to paint a brush of those would be consistent of us continuing down this AI transform path. You got to see the business startup creation and as well as the job application outside of the tech field itself. The tech field will disrupt its own field the most. So the pressures we've seen on software company stocks is not surprising at all. We've seen in every technology cycle and we could give examples and we're not just seen in the disruption of even software and it jobs again that that is that, that is not a surprise to us given the work we did in the past. But what we got to see is these augmentation and new platform effects outside of the AI space. I'm not criticizing the excitement in the AI space, but tell me how it's being used for new revenue purposes. That's both the alpha opportunity, if you're actively inclined, actively managed inclined, as well as indicators to watch if we're going down that path.
Matt Zigler
Zoom me out because a lot of what we're talking about feels like a US centric story. But this is a, this is a truly global trend. Talk about globalization or deglobalization, how this
Joe Davis
fits in the context one, again, there's obviously pressures on deglobalization. There's the clear, you know, we've called it secular for some time, tensions in some ways between the United States and China from an economic perspective and other dimensions, just economic, you know. However, when we look at like the countries that could benefit the most from AI, I think again if you have to look, we have to. I would urge us to look in two phases. One is the production of AI as a technology. That's chips, that's picks and shovels, that's software obviously that push, you know, that that's as beneficial to China in some dimensions as is United States. Besides those two, and I talk about the book, it's a race for a distant third, no third country is even close. Maybe when you look at Taiwan through that same lens. But other countries, no, but other countries could benefit in the second half of the cycle if you look out beyond two years and that tends to again be on the consumption. So there it's going to be economies that as we go into phase two, it's funny, it starts to push you a little bit outside of the United States. Not because AI has been transferred transformational, it's been just the opposite. It's, but it's, it's countries that have very poor demographic profiles. Maybe they do have some debt headwinds and they, they have the need for greater automation because of poor demographics and a high service based economy. So as I talk about in the book, you know that if that sounds familiar, that's, that's some countries in Europe, that's, that's areas such as Japan and, and again emerging markets. It's mixed. It could be beneficial for again for China, but it could be, you know, it may not do as much for Brazil. So it's, it's, it's country by country. But at least I try to provide a Little bit of a framework of what those criteria are. And so it's, this is a global phenomenon, you know, general purpose technologies. If we're right in our baseline, they, they are global by nature in the same way electricity was or, or, or their computer was. And so AI won't be anything different.
Justin Carboneau
We were always taught in economics. I'm not an economist, but I did take economics in college that you know, free trade was good. You know, countries want to focus on where their comparative advantages, yes, tariffs are bad, you know, dead weight loss. But it seems like, it's weird, it seems like, like the market, maybe it's because of this whole AI, it's like kind of shrugged off like all that trade related, like economic
Joe Davis
theory. I guess it's been a little perplexing. I mean I can tell you what our projections we saw. The, I mean the tariff increases we saw last year were multiple standard deviations. Even in our long run data set. We never had a recession as a baseline. In part because trade, although very important, is a small share at least of the US economy. 5 or perhaps 10% by certain measures higher from an S and P earnings footprint. But nevertheless. But I would say the same thing with oil prices as well. Given recent events, both tariffs and oil prices have not had a material dent in the economy. But again I think that depends. They could have if we didn't have AI investment continue to accelerate. Which is why I think the power of having all these factors in the same ecosystem. You know, we're not going to be able to anticipate all these, you know, geopolitical shocks. But when they occur, you can at least say this is all around a magnitude question. The direction of tariffs can be negative for growth, negative for inflation, but all else equal. And we know that the world, we never live in that world. And so how strong or weak are the other forces? And so it hasn't been a surprise to us that growth has held up generally because of our investment expectations on the AI front, which are a trillion dollars in growing. So but if we were, if those shocks had occurred for tariffs and oil prices, if those shocks had occurred, I'd say five years ago, we could have very well been talking about recession or being very nervous about it. It's not that those forces don't matter, it's just that what's helping potentially to offset it. But again, some of those effects were delayed and some of the fact is that those two factors, oil prices and tariffs, they matter for the U.S. economy. But it is so diversified that it matters less to the United States than say the UK or parts of Europe, which we're seeing significant effects of those two shocks. And so it does vary where we are in the cycle and what else is offsetting potentially some of these headwinds.
Justin Carboneau
But I think it's a very important point because as investors, when we're looking at the headlines or watching, you know, it's that point in time that a lot of times investors are paying attention to. So the tariffs or the spike in oil. But to your point, it's like in the context of the entire economy and the market, there's so many different moving pieces.
Joe Davis
Yes.
Justin Carboneau
And the magnitude of different things, you know, investors can kind of lose sight, I think, of, of some of those things that can be different than what people think are how it's going to play out.
Joe Davis
Yeah. And if someone's trying to do. Again, I, you know, I've been in the business 20 years and again, we have some, you know, some deep, you know, empir frameworks. But I'd say let's say we didn't have those frameworks. And again, I'm a personal investor too, and talking with my advisor, you know, help me get closer to retirement. You know, I would argue we all have, even mentally, a multifactor scorecard. Really simple. So you can have your oil prices that you're concerned about. You can have geopolitical tensions that you care about or worry about. You can have our deficit issues that you worry about. And you have your other factors too. You have the AI threat as well as opportunity, and you go down the line. Why I think it's important to put all those factors, good and bad, on one ledger is that in our framework, empirically, is doing this like naturally, is that what that, what that. What I've always found when I do that is that it doesn't lead to drastic changes in one's portfolio. If I had just rather versus if I had just been looking at one of those factors in isolation. Right. Because if you see those headlines, it could come out tomorrow, oil prices hitting 120, not, not $100, $110. You say, oh wow, this is going to be really going to hit growth equity market. I'm going to get defensive. It's like, okay, but, but that factor versus those other ledgers. Now if you put that up against the AI investment in the six months, which is unlikely to slow down now, you may get to a different conclusion. So I think at least having her heuristic now that 10, well, that that'll tend to Keep you closer to the policy portfolio. It doesn't mean at all by the way that one doesn't change one's, you know, investment exposure. But you, you may view it from a risk management perspective more at the margin or less near term oriented. You may still be worried about fiscal deficits, for example, in that, in that rubric, regardless of what's in the headlines today. But there would be ways that you could kind of mitigate that. Or I would say for listeners with your, with your advisor, right, they would be able to walk them through that along with all the other goals that they would know better than anyone with you. I, I think I would. That's how I would think about how macro meets the portfolio is doing that in context also versus the market euphoria or, or pessimism at any point in time. Again, generally when I do that it, it keeps me closer to my benchmark. It does not mean I'm not going to make some changes for opportunities or for risk management, but they're not going to be as drastic. If I had just looked at one factor in isolation that that would lead me to really whipsaw a portfolio more often than not.
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Matt Zigler
That being said, what's it mean for the standard quote unquote 60:40 portfolio? And what's it mean for what an updated policy portfolio could look like reflecting all that you just shared?
Joe Davis
Well, I think that's a, you know, that's still, well, that's still a viable portfolio. I mean you can pick your sort of real return target as listeners like for example, for me personally, given my goals for the bequest for myself or my, my Retirement income, my wife and I and then our goals in life. I'm closer to an 8020 period regardless of my views on the market. That's just given our personal situation and my risk tolerance. But let's say it's 60 40. I just picked that in the book. As you said, it's a fine representative benchmark. There'll be a fine portfolio. There's some risk to the 6040 effect. It's really because they worse in the equity market. But that's only if AI only automates. So it disappoints in some of its hope. For a time it's manageable. But there would be a period of disappointment that's really on the 60 area, not so much on the 40, which is why I talk about in the book if you're going to worry about all states of the world, you want to fade a little bit the euphoria that is in the mag. And I'm not picking on these companies on the magnificent, you know, the, the large cap growth companies not because they are not adding value, it's quite the contrary. It's because as it spreads, opportunities will unfold. So again, you know, the baseline is that it'll be fine. We may have some turbulence here but you know, on the near term it's upside risk on, on the, on the 60 segment. But at some point there's going to be a market consolidation. So I, I'd say just thinking about balance and risk mitigation and I think the biggest question for I think value having with clients is two things. One is talk to me about the two or three states of the world that have a significant odds or non de minimis odds of happening and how would my portfolio weather them and is there modest sort of tilt in the portfolio that I could add for risk or mitigation or alpha generation, including active management. But that I think that's like almost regardless of what AI does as a, as a, as a, as a consideration set. But 60 40, I don't see changing as the reference portfolio. The fact is most active managers don't outperform it. But there are opportunities for investors regardless of how AI plays out.
Justin Carboneau
So Joe, we have two standard closing questions we like to ask all of our guests. But before I get to that, I do just want to point out to the listeners in the audience that in addition to the book, Vanguard has an excellent, what I would call like a mega trends research hub where there's data, there's some actually other videos of Joe and there's some, you know, Interesting research and PDF. So that's, that's just free on Vanguard site. So we certainly encourage people go there to buy the book too. But of course, you know, if you want to start with the, with the research hub, that's a great place to get some really cool information. So the first closing question we like to ask all of our guests is what is one thing you believe about investing that most of your peers would disagree with?
Joe Davis
Disagree with? I do like that question. I, I would say that, that there's a strong linkage all the time between what's going on in the economy and what's going in the stock market. The fact is that those two can move in different waves in part because the stock market can be anticipatory of what has not yet transpired in the economy. I think we're seeing some of that today. And then it can go in the inverse at some point in time. So that would be something I would argue there's two or seem to occur one for one GDP with stock markets. But I think most, you know, most, most readers ultimately would appreciate that those two don't always move in lockstep.
Matt Zigler
There are one thing you could teach the average investor. Put it on a billboard, fly it on a little plane on the sky over the Jersey shore.
Joe Davis
I tell you it comes from Ben Franklin. But Jack Bogle would big advocate for this too. And you've talked about it yourselves. And that's the power of compounding. I mean even I could be the most savvy investor and move around the market in time. The fact is how much money I put into my own portfolio and saving and letting it rest and let the capital markets do their job is going to dwarf any so called alpha or out, you know, out savvying the average investor. And so that's something I continue to remind myself. Put as much money in as you can and let it do the hard work for us. A compound interest. It is the biggest asset we have as long term investors.
Matt Zigler
One more thing about the book before we let you go. The proceeds going to charity. What was the thought there? What was the strategy? What was the idea?
Joe Davis
Well, again, no one even asked me. You only get one check at Vanguard. I'm a Vanguard employee. So that was first order. Secondly, it was just as Vanguard we believe in our community as well as our clients. And so all the proceeds go for Vanguard strongstar for kids. This is young children. They may not have, you know, the financial and their parents the financial resources for early childhood education. And so if that can help you know, you know, some young children. I couldn't think of a better place for the proceeds to go.
Matt Zigler
I think that's a very important point to end us on. Joe, thank you so much for your time today.
Joe Davis
Thank you for having me.
Matt Zigler
Hey, if people want to bug you on the Internet, find out more research on this. Can you tell them one more time where they can get this?
Joe Davis
Well, I think what you said on the Vanguard hub and then every year we'll have our annual outlook, but you will see AI and these other factors prominently in there. We're looking at not just for the next year, but for the next several as we all are trying to navigate this universe.
Matt Zigler
Advisors, allocators, do it yourselfers. You want to check out these resources. They are very, very cool. This is one of the reasons why Vanguard's such an interesting company is because of how much of this stuff they put out there. Joe, thank you so much for the time you are watching Excess Returns. Like comment, subscribe all the things below. And we are out.
Justin Carboneau
Thank you for tuning in to this episode. If you found this discussion interesting and valuable, please subscribe on your favorite audio platform or on YouTube. You can also follow all the podcasts in the Excess Returns network@excessreturnspod.com if you have any feedback or questions, you can contact us@excess returnspodmail.com no information information on
Joe Davis
this podcast should be construed as investment advice. Securities discussed in the podcast may be holdings of the firms of the hosts or their clients.
Episode Title: We Asked Vanguard’s Chief Economist Why AI Has Two Huge Tails — And Which One Wins
Date: June 9, 2026
Host(s): Matt Zigler, Justin Carbonneau
Guest: Joe Davis, Global Chief Economist & Head of Investment Strategy Group at Vanguard, author of “Coming Into View: How AI and Other Megatrends Will Shape Your Investments”
This episode dives into the impact of Artificial Intelligence (AI) on long-term economic growth, investing, and fiscal policy, with a particular focus on why AI alters the possible futures (“two huge tails”) for markets and economies. Joe Davis shares Vanguard’s quantitative megatrend framework, explores what makes technology a unique economic driver, discusses sector rotation as AI develops, and outlines potential scenarios if AI falls short of its promise.
Key Points:
Quote:
“When those trends start to change... they themselves affect the near term, not just some long-term assumption that say, hey, I'll worry about that 10 or 15 years from now. It affects the business cycle.”
– Joe Davis [04:16]
Quote:
“Technology is by far the biggest one, but it has to evolve in a certain way... you got aging societies, look at the demographic patterns in China, you got deglobalization threats, you got the rise of debt levels... That is what we're quantifying in our framework.”
– Joe Davis [09:18]
Quote:
“Half the time it’s not necessarily... all the near-term volatility in stocks, in GDP was the so-called business cycle... But it is the emergence of new ideas, investment rates accelerating, the trend is likely to change productivity, in innovation and can drive earnings power.”
– Joe Davis [12:04]
Quote:
“There has never been a great technology that has not had a significant drawdown in stock prices, which is code word... some say a bubble forms.”
– Joe Davis [15:52]
Quote:
“The biggest beneficiaries are the users or adopters of technology that have unmet need... If I had to overweight one sector... it would be things such as financial services... and then healthcare.”
– Joe Davis [21:11]
Quote:
“It’s a world where AI has not become a general purpose technology... That has led to massive earnings disappointment in the US equity market, particularly in the large cap growth universe... higher discount rate, higher unemployment, without the growth lift from new stuff.”
– Joe Davis [30:16]
Investment Implication:
In the downside scenario, move defensive: “shorter duration fixed income” is preferred over equities.
Quote:
“You got to see the business startup creation and... the job application outside of the tech field itself... tell me how it's being used for new revenue purposes. That's both the alpha opportunity... as well as indicators to watch if we're going down that path.”
– Joe Davis [34:13]
Quote:
“Countries that have very poor demographic profiles... have the need for automation... that's some countries in Europe, that's areas such as Japan... emerging markets, it’s mixed.”
– Joe Davis [37:03]
Quote:
“If you're going to worry about all states of the world, you want to fade a little bit the euphoria... not because they are not adding value, it’s quite the contrary... but as it spreads, opportunities will unfold.”
– Joe Davis [46:07]
Joe’s Billboard Advice:
“Put as much money in as you can and let it do the hard work for us. A compound interest. It is the biggest asset we have as long term investors.” [50:21]
For more, visit Vanguard’s Megatrends Research Hub or read “Coming Into View.” As always, stay diversified, focus on long-term trends, and harness the power of compounding.
This summary covers the main discussion points, insights, and notable moments from the episode, providing an actionable recap for investors and market observers alike.