TNB Tech Minute: SK Hynix Shares Plunge by Record 15% in South Korea

Summary

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WSJ Tech News Briefing

Episode Title: TNB Tech Minute: SK Hynix Shares Plunge by Record 15% in South Korea
Air Date: July 13, 2026
Host: Imani Moiz

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Episode Overview

This Tech Minute snapshot dives into the dramatic drop in SK Hynix shares — their worst day on record — and examines how the shock reverberated across South Korea’s financial markets. The episode also covers two other major industry developments: Meta’s unprecedented expansion of its Louisiana data center project and Intel’s ambitious investment in Ireland to fuel AI chip growth. The rapid pace and massive scale of the AI industry form a recurring theme.

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Key Segments & Discussion Points

1. SK Hynix’s Record-Breaking Stock Plunge

[00:16 - 00:56]

• Event: SK Hynix’s stock closed down 15% in Seoul, the sharpest single-day decline the company has ever experienced.
• Market Impact: The drop triggered a nearly 9% fall in the broader South Korean stock market, resulting in a 20-minute trading halt due to volatility controls.
  • “The nosedive helped send the South Korean stock market almost 9% lower, which triggered a 20 minute trading halt.” — Imani Moiz, [00:24]
• Context: This steep decline contrasted with SK Hynix’s American depository receipts, which had just soared 13% on the Nasdaq the previous Friday.
• Uncertainties: No clear cause for the sudden plunge was identified.
• Big Picture: Even after Monday’s decline, SK Hynix shares remain up almost threefold for the year.

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2. Meta’s Mega Data Center Expansion

[00:56 - 01:21]

• Announcement: Meta is increasing the expected cost of its Louisiana data center project from $27 billion to more than $50 billion.
• Significance: The site will be Meta’s largest data center, boasting 5 gigawatts of compute capacity.
• Concerns & Guarantees:
  • Previous Journal reporting highlighted local concerns about Louisiana electricity customers potentially facing higher costs.
  • Meta counters by stating it will cover energy, water, and infrastructure expenses for the new center.
  • “Meta says it’s agreed to pay the cost of energy, water and related infrastructure used by the data center.” — Imani Moiz, [01:19]

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3. Intel’s AI Chip Manufacturing Expansion in Ireland

[01:21 - 01:45]

• Investment: Intel is committing €5 billion to upgrade its Irish manufacturing site.
• Purpose: The expansion aims to address growing demand for AI and high-performance chips.
• Benefits:
  • Boosts chip production and advances research.
  • Utilizes existing clean room capacity.
  • Strengthens the European semiconductor supply chain.
  • “Intel said the upgrade will help it strengthen Europe’s semiconductor supply chain and serve industry demand.” — Imani Moiz, [01:42]

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Notable Quotes & Memorable Moments

• “The decline marked an abrupt reversal in investor appetite after SK Hynix’s American depository receipts soared 13% last Friday in their first trading day on the Nasdaq.” — Imani Moiz, [00:31]
• “There was no clear trigger for SK Hynix’s fall, and shares are still up almost threefold over this year.” — Imani Moiz, [00:44]
• “Meta says it’s agreed to pay the cost of energy, water and related infrastructure used by the data center.” — Imani Moiz, [01:19]
• “Intel said the upgrade will help it strengthen Europe’s semiconductor supply chain and serve industry demand.” — Imani Moiz, [01:42]

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Timestamps for Major Segments

• SK Hynix Stock Crash & South Korea Market Impact: [00:16 - 00:56]
• Meta Louisiana Data Center Expansion Details: [00:56 - 01:21]
• Intel’s Irish Campus Expansion & Industry Implications: [01:21 - 01:45]

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Tone & Language

• Authoritative, concise, and grounded in financial and technological facts.
• Delivers urgency and gravity regarding the SK Hynix market impact, counterbalanced by clarity on massive ongoing tech investments.
• Maintains a fact-forward journalistic approach, with emphasis on numbers and direct company statements.

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Listeners are left with a snapshot of the tech industry’s volatile market movements, alongside the continued high-stakes infrastructure arms race in AI and semiconductors.

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Transcript

[A]

This episode is sponsored by Anthropic, the makers of Claude Scott Wu spent his childhood winning math and programming competitions. Now he solves similar problems as CEO of Cognition, a successful AI startup. Find out more at the break.

[B]

Here's your morning TNB Tech minute for Monday, July 13th. I'm Imani Moiz for the Wall Street Journal. SK Hynek shares logged their steepest ever decline in South Korea today, closing down 15% in Seoul. The nosedive helped send the South Korean stock market almost 9% lower, which triggered a 20 minute trading halt. The decline marked an abrupt reversal in investor appetite after SK Hynix's American depository receipts soared 13% last Friday in their first trading day on the Nasdaq. There was no clear trigger for SK Hynix's fall, and shares are still up almost threefold over this year. Meta is scaling up its Louisiana Data center project and says it's now expected to cost more than $50 billion, up from $27 billion. The project, which will be the company's largest data center, will hold 5 gigawatts of compute capacity. The Journal previously reported that the initiative had raised concerns about burdening Louisiana electricity customers with higher costs. Meta says it's agreed to pay the cost of energy, water and related infrastructure used by the data center. And in another AI buildout, Intel says it plans to invest 5 billion euros to expand its manufacturing site in Ireland as part of an effort to meet demand for AI and high performance chips. The company said the capital investment in the campus will boost production and advance research and development activities while utilizing capacity across the site's existing clean room space. Intel said the upgrade will help it strengthen Europe's semiconductor supply chain and serve industry demand. And that's your TNB Tech minute. We'll be back this afternoon with more.

[A]

Anthropic's collaboration felt like a true partnership, according to Lovable's Anton Oseka. That helped fuel the startup's greater mission.

[C]

I'm super excited about this world where more things are possible. There is fundamentally more human agency that's unlocked when frictions for starting a company and building your product, they start disappearing. I think we're entering an era where there are more societal problems that are getting solved. We're seeing that lie with millions of people building on top of our platform.

[A]

And how does he think other startups can tap into that energy?

[C]

My advice to founders working with Anthropic would be to dig into a partnership and ask for help, spend time with a team because these are humans that actually really care it starts feeling more like we're building something together than just a customer vendor relationship.

[A]

How can Claude bring your vision to life? Get [e-mail] problem solvers.