South Korea Stocks Surge on AI Boom: Why Memory Chip Makers Are Leading

The AI Infrastructure Trade Is Back

Samsung Electronics and SK Hynix led Thursday’s rally, rising over 4% and 7% respectively in early trade. The catalyst? A fresh wave of strong earnings from global tech companies signaling that AI infrastructure spending isn’t slowing down.

Supermicro and cloud provider CoreWeave both surged after better-than-expected results, reinforcing what analysts have been saying for months: the demand for AI compute—and the memory chips that power it—remains robust.

“The AI spending boom is far from over,” noted David Morrison, senior market analyst at Trade Nation. That’s not hype. It’s what the earnings are showing.

Why Memory Chips Are the Canary

Here’s the part worth paying attention to if you track AI infrastructure trends: memory stocks are starting to outperform the broader tech sector for the first time since June, according to Fundstrat Global Advisors.

That matters for a specific reason. Memory chips—the kind Samsung and SK Hynix produce at scale—are foundational to AI workloads. Every GPU cluster, every large model training run, every inference deployment needs high-bandwidth memory. When memory stocks move, it’s often a leading signal that AI compute demand is genuinely accelerating, not just being talked up.

Fundstrat’s head of technical strategy, Mark Newton, described memory as “one of the last major corners of tech to begin turning higher”—which, if accurate, suggests the rotation back into tech has more room to run.

What the iShares MSCI South Korea ETF Is Telling Us

Newton flagged that the iShares MSCI South Korea ETF has broken above a key technical level, confirming what he called a reversal pattern that “looks attractive technically for further near-term gains.”

For context, Samsung and SK Hynix carry outsized weight in Korean equities. When those two names move, the Kospi moves. The ETF’s breakout is essentially a proxy signal for where institutional money thinks AI infrastructure demand is heading.

The Caveat Worth Keeping

Newton is bullish near-term, but he flagged a specific risk: if U.S. Treasury yields and the dollar start climbing again later this month, the rally could lose momentum. That’s a macro headwind that has nothing to do with AI fundamentals—and it’s the kind of thing that can interrupt even a well-supported trade.

For now, his framing is direct: South Korea and memory stocks “look to be the right vehicles for near-term risk-on exposure.”

The Practical Takeaway

If you’re watching the AI tools and infrastructure space, the Kospi rally is a useful signal—not just a market story. When the companies making the memory chips for AI data centers are outperforming, it suggests the underlying demand driving AI tool development and deployment is real and ongoing.

Bull markets in memory chips don’t happen in a vacuum. They happen when someone, somewhere, is building a lot of AI infrastructure. Right now, that appears to be exactly what’s happening.