Motley Fool Money – How Much Should You Have in the Stock Market?

Published: March 7, 2026
Host: Robert Brokamp
Guest: Amanda Kish (CFP, CFA)
Main Theme: Understanding how much of your portfolio should be in the stock market, focusing on risk capacity, risk tolerance, and building an allocation that works for your needs and temperament.

Episode Overview

This personal finance edition of Motley Fool Money focuses on one of the bedrocks of investing: deciding how much to invest in the stock market versus holding in cash or bonds. Host Robert Brokamp and guest Amanda Kish dig into the core concepts of risk capacity and risk tolerance, offer practical guidance for determining your stock allocation, and address how biases and behavioral finance can undermine even the best-laid plans. This episode is part of the 2026 Financial Planning Challenge series.

Key Discussion Points & Insights

Defining the "Right" Amount for Stocks

• Goal: Help listeners determine the appropriate percentage of their portfolio in stocks versus other assets, considering both mechanical and emotional factors.

1. Risk Capacity: The Foundation

[00:04]-[05:10]

• Definition:

  • Amanda Kish: “Risk capacity is really the structural side of the risk equation. It’s not about how you feel… it’s about what your financial life can actually absorb…” [01:25]
  • Analogy: “Risk tolerance is your stomach and risk capacity is your seatbelt.” [01:25]

• Key Factors:

  • Time horizon: When do you need the money?
  • Income stability: Is your cash flow reliable?
  • Liquidity: Do you have enough cash for emergencies, or would a market downturn force you to sell?
  • Amanda: “High income doesn’t automatically equal high risk capacity.” [03:58]

• Guiding Principles:

  1. Time Horizon: Longer timeframes increase your risk capacity.
  2. Stability of Income: More stable income sources allow greater risk exposure.
  3. Liquidity Stress Test: Will you be forced to sell during a downturn?
  • Amanda: “The risk capacity is really about the whole picture, not just the size of your portfolio.” [03:58]

• Special Consideration: Retirement

  • Robert: “Retirement is kind of a unique goal… what happens in that five to 10 years before retirement… has a disproportionate impact.” (“retirement red zone”) [05:10]

2. Risk Tolerance: Know Thyself

[05:10]-[09:01]

• Definition:

  • Robert Brokamp: “That’s… the stomach—how much you can emotionally take the up and down of an all-stock portfolio.” [05:10]

• Assessment Techniques:

  • Amanda: “I think one of the most honest approaches is to use what I’d call a gut check scenario… If I checked my portfolio tomorrow and it was down 30%… what would my first instinct be?” [06:20]
  • “Your behavior in those moments (like 2020, 2022) tends to be far more predictive than how you answer a hypothetical question...” [06:20]

• Behavioral Caution:

  • Robert: “On average it takes two to three years for the market to get back to where it was before a bear market. It actually took more than five years for the first two bear markets of this century.” [07:53]

3. Translating Risk Profile to Asset Allocation

[09:01]-[11:45]

• General Ranges (Guidelines, not Rules):

  • Amanda Kish:
    • Aggressive Investors:
      • Retirees: ~70% in stocks
      • Younger investors: up to ~95-97% in stocks
    • Moderate Investors:
      • ~60-90% in stocks, adjusted for age/time horizon
    • Conservative Investors:
      • ~50-80% in equities

• Golden Rule:

  • Amanda: “The best allocation is the one that you can actually stick with… a 90% equity portfolio you abandon in a moment of panic is worse… than a 60% you can hold steadily for decades.” [10:40]

• Target-Date Funds:

  • Robert: “Look at how the 2040 funds from Vanguard and Fidelity… are allocated. They tend to be geared towards moderate risk investors.” [11:45]

4. Choosing Types of Stocks According to Risk

[12:38]-[13:42]

• Stock Selection:

  • Amanda: “Not all stocks are created equal… larger, more established companies, perhaps dividend paying, tend to be far less volatile than a small cap growth company or emerging market stock.” [12:38]
  • Conservative investors: emphasize dividend growers, large-cap value, broad index funds.
  • Aggressive investors: room for small caps, sector-specific funds, higher growth potential.

• Diversification:

  • Robert: “We generally recommend at least 25 stocks… most people should own more, maybe a portfolio of index funds as well.” [13:42]

• Market History:

  • Consider how holdings performed in past downturns as a clue for future tough times.

5. Behavioral Biases That Undermine Good Allocation

[13:42]-[16:59]

• Loss Aversion:

  • Amanda: “The pain of losing money is roughly twice as powerful psychologically as the pleasure of gaining…” [14:57]
  • Leads to selling in panic, even when holding may be the better option.

• Recency Bias:

  • Amanda: “A tendency to assume that whatever just happened is going to keep happening.” [14:57]

• Herd Mentality/FOMO:

  • Robert: “Buying what’s hot, panic selling with the crowd… your circumstances may warrant a balanced portfolio, but it may have been hard…to watch people who are all-in on tech stocks make so much money.” [16:12]
  • “You can only spend your own money. You need a portfolio that you can stick with, full of all the money that will be there when you need it.” [16:12]

6. Final Words of Wisdom & Practical Steps

[16:59]-[18:45]

• Amanda Kish:

  • “The whole goal of understanding your risk profile isn’t to find the perfect portfolio, it’s to find the portfolio you can live with… If taking a minute or two to reflect on your true risk temperament, your risk tolerance and risk capacity helps you avoid… a fear-driven decision… then that’s more than worth it.” [16:59]

• Portfolio Tracking Tools:

  • Robert: “If you haven’t yet, choose a tool to track and analyze everything… Empower, Monarch Money, Quicken Premier, Morningstar’s premium investor service, or even a spreadsheet.” [18:45]
  • Resource: Professor James Choi (Yale) offers a free spreadsheet to guide allocation—linked on his LinkedIn. [18:45]

Notable Quotes & Memorable Moments

• Amanda Kish: “Risk tolerance is your stomach and risk capacity is your seatbelt. One’s emotional, one is mechanical, and you need both.” [01:25]

• Robert Brokamp: “Retirement is… not a goal with a single date, it’s actually a series of goals… what happens in that five to ten years before… has a disproportionate impact.” [05:10]

• Amanda Kish: “A 90% equity portfolio that you abandon in a moment of panic is to be far worse for you, most likely, than a 60% equity portfolio that you can hold steadily for several decades.” [10:40]

• Amanda Kish: “The pain of losing money is roughly twice as powerful psychologically as the pleasure of gaining that same amount.” [14:57]

Timestamps for Key Segments

• 00:04 — Introduction to risk capacity vs. risk tolerance
• 01:25 — Risk capacity defined, seatbelt vs. stomach analogy
• 03:58 — Three principles for risk capacity + caveats
• 05:10 — Special note on retirement & “red zone”
• 06:20 — Gut check for risk tolerance, past crises as test cases
• 09:01 — Sample asset allocations for aggressive, moderate, and conservative investors
• 10:40 — Stick with an allocation you can hold in good times and bad
• 11:45 — Use target-date funds as a benchmark for asset allocation
• 12:38 — Types of stocks for different risk profiles
• 13:42 — Diversification; minimum number of stocks
• 14:57 — Loss aversion and recency bias explained
• 16:12 — Herd mentality and FOMO
• 16:59 — Final words of wisdom: “Find a portfolio you can live with.”
• 18:45 — Practical tools for tracking and analyzing your allocation

Takeaways & Action Items

• Assess both your risk capacity (mechanical: time, income, liquidity) and risk tolerance (emotional: your true gut reaction to losses).
• Build your stock allocation according to both—not just “what’s recommended.”
• Diversify, aim for at least 25 stocks; use index funds for simplicity.
• Be mindful of behavioral pitfalls—panic selling, chasing trends, FOMO.
• Use portfolio tracking tools or reputable spreadsheets to improve awareness and discipline.
• Remember: “The best allocation is the one you can actually stick with.” [10:40]

This episode encourages listeners to reflect honestly on both their financial situation and their emotional reaction to market swings, and to design their portfolios to withstand both market downturns and their own nerves. As Amanda Kish sums up: “Find the portfolio you can live with.”