SK Hynix 557% Profit Jump Still Disappoints: AI Memory Trade Is Cracking
When a 557% profit surge triggers a circuit breaker sell-off, the bar for AI hardware stocks has officially become unreachable

Ticker Ratings
| Ticker | Rating | Entry Price | Current | $ Gain | % Gain |
|---|---|---|---|---|---|
| MU MICRON TECHNOLOGY INC | hold | $829.02 | — | — | — |
| WDC WESTERN DIGITAL CORP | hold | $482.22 | — | — | — |
| STX Seagate Technology Holdings plc | hold | $795.94 | — | — | — |
| AMD ADVANCED MICRO DEVICES INC | hold | $459.50 | — | — | — |
| NVDA NVIDIA CORP | buy | $197.78 | — | — | — |
| NIO NIO Inc. | buy | $4.82 | — | — | — |
| LI Li Auto Inc. | buy | $13.88 | — | — | — |
$HXSCF (SK Hynix) just posted a 557% jump in quarterly operating profit and the market threw a tantrum anyway. Shares tumbled hard enough to trigger a circuit breaker on the KOSPI index for the second consecutive day, a feat so rare it has never happened before in the index's history. The crime? Missing analyst estimates by roughly 6%. This is what happens when AI hype sets the bar at the moon and reality lands somewhere in the upper atmosphere.
Bloomberg's Stock Movers coverage laid out the rotation clearly: funds are pulling out of AI hardware names like SK Hynix and piling into Chinese EV stocks such as $LI, $NIO, and $BYDDF, partly on easing fears around memory chip cost inflation. Meanwhile, CNBC's Mad Money flagged the same theme stateside: memory and storage names including $WDC, $MU, and $STX all staged parabolic runs tied to AI data center demand, peaked in June, and reversed hard. Cramer's warning was blunt: post-parabolic stocks rarely recover quickly. The Philadelphia Semiconductor Index is down over 4.6% in a single session per Bloomberg Businessweek's coverage, with $MU off 9% and $AMD down 8%.
The bull case for AI memory hasn't disappeared, it's just been priced to perfection for too long. SK Hynix's own long-term outlook remains strong: bullish HBM pricing contracts are reportedly improving, and analyst SK Kim of Daiwa Capital Markets downplayed Chinese rival CXMT as a near-term threat despite its 500% debut surge on the onshore Chinese market. CXMT is now the most valuable tech company listed in China, which is a sentiment signal worth watching even if the fundamentals don't yet justify the title.
On the rotation trade, the context matters: this isn't a panic out of tech broadly. $NVDA bucked the chip selloff with a slight gain, and the equal-weighted S&P 500 was actually up 1.1% on the same day the Nasdaq struggled, per Bloomberg's Closing Bell coverage. The market is doing exactly what rotation trades do: money leaving the most crowded positions and spreading into names that haven't already priced in the next five years of AI upside.
The CNBC segment titled "Opposite Land" captured the mood perfectly: Ross Gerber of Gerber Kawasaki is warning investors to get more prudent precisely because the bullish feeling is strongest right now, citing the potential for a 2022 repeat with rising inflation, higher rates, and geopolitical conflict as the cocktail nobody wants to order twice. With the Fed meeting underway and Citadel Securities floating the possibility of a surprise rate hike under new Fed Chair Kevin Warsh, the chip sector's leverage unwind could have more room to run before buyers step back in.
A 557% profit beat that still counts as a miss is the most 2026 sentence you'll read today, and the market is making sure everyone knows it.
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