SKHX Unwinds the Record Run as Korea's Chip Rally Cools

Profit-Taking Hits the Chip Rally

On June 23 the Kospi fell as much as 4.6% from its record high, with Samsung Electronics and SK Hynix each sliding more than 5% as investors decided the AI-memory trade had run too far, too fast. Foreigners did the selling: they net sold more than ₩2 trillion (about $1.3 billion) of Korean shares in the morning session, with retail traders stepping in to absorb part of it. By the open, foreign investors had already dumped a net ₩1.40 trillion while the won weakened to 1,539.4 per dollar. No SK Hynix-specific bad news landed — no earnings, no guidance cut, no order cancellation. This is a crowded position being unwound, not a fundamental break.

What SKHX Is Giving Back

The drop lands two days after SK Hynix overtook Samsung to become South Korea's most valuable company for the first time in 26 years, closing Monday at a record ₩2,919,000 with a market cap near ₩2 quadrillion (~$1.3 trillion). The SKHX perp ran roughly +6.26% into that milestone, gave back about 5% in the first leg of the pullback, and has now shed close to 10% over six hours as Seoul's session deepened. The longer-term setup hasn't changed: SK Hynix remains Nvidia's primary HBM supplier and is moving toward a ~$14 billion Nasdaq ADR listing as soon as August, with SEC clearance expected around now. What's being repriced is positioning, not the story — the tape simply got ahead of itself.

The Won Is Doing Some of the Work

It's worth remembering what SKHX actually tracks: a single SK Hynix common share, priced in won in Seoul and converted to USD at the prevailing FX rate. With the won sitting near 1,539 per dollar, a softer currency drags the dollar-denominated perp even on days Seoul holds the line — and today Seoul didn't. There's also a secondary thread circulating: reports that SK Hynix is slowing its HBM4 ramp to keep heavily-booked HBM3E lines running longer. That can be read as caution or, more plausibly, as evidence demand is straining capacity — either way it isn't the cause of today's move, but it's the kind of signal that decides whether this is a dip into the ADR debut or the start of a real top.