Valuation Paradox at SK Hynix: How a 230% Rally Still Leaves It Cheaper Than U.S. Rivals

SK Hynix crosses $1 trillion market cap; trades at half Micron's P/E despite 238% surge. Supply crunch persists through 2028, HBM capacity sold out. New leveraged ETFs debut, driving record KOSPI volume but exposing index concentration.

The südkoreanische Chiphersteller SK Hynix has crossed the trillion-dollar market capitalization threshold, a milestone reached by only a handful of companies worldwide. Yet the stock that has surged more than 238% year-to-date trades at a valuation that would make most growth investors do a double-take. At roughly six to seven times forward earnings, SK Hynix and its domestic peer Samsung Electronics are valued at half the multiple of U.S. competitor Micron Technology, according to KB Securities strategist Peter Kim.

The gap exists because analysts keep raising profit estimates faster than the stock can climb. Wedbush analyst Dan Ives argues the market continues to underestimate both the duration and intensity of the memory super-cycle, calling SK Hynix one of the most important AI plays in the market.

Behind the rally lies a supply crunch that shows no sign of easing. Memory chip prices have doubled in the first quarter versus the prior period, and another increase of up to 63% is expected this quarter. Mirae Asset Securities analyst Kim Young-gun raised his target on SK Hynix from 3.2 million to 3.8 million won, a 18.8% upside that reflects his conviction that DRAM and NAND prices will jump 184% and 231% respectively this year — not normal cyclical noise but a fundamental repricing of pricing power. The investment bank also lifted its Samsung target 14.6% to 550,000 won, citing a shortage that could persist through 2028.

That thesis is reinforced by SK Hynix’s forward order book. The company’s entire HBM capacity for 2026 is already sold out, and customer demand for the next three years exceeds current production capacity. The bottleneck is concentrated in data centers, where AI infrastructure devours high-quality memory chips while traditional end markets like smartphones, laptops and autos compete for leftover supply.

A new layer of complexity hit the Korean market on Wednesday with the debut of the country’s first single-stock leveraged and inverse ETFs. All 18 products — including 16 leveraged equity ETFs and two leveraged certificates on Samsung and SK Hynix — triggered volatility interruptions on their first trading day. Total trading volume reached 3.5 trillion won, with the “1Q SK Hynix Futures Single-Stock Leverage” delivering a daily return of 19.46%. The regulatory changes that enabled these products were approved by South Korea’s financial watchdog in late April, and only companies with a market capitalization of at least 10% of the benchmark index qualify — currently just Samsung and SK Hynix.

The concentration in the KOSPI has become a double-edged sword. Samsung and SK Hynix together now account for more than 50% of the index’s total market cap. On Wednesday, when the KOSPI hit a record high, only 77 stocks rose while 826 fell — a stark illustration of how two names can mask the broader market’s weakness. According to a UBS trading desk note, on a day in March when SK Hynix lost more than 10%, roughly 60% of the final hour’s trading volume came from ETF rebalancing. Barclays estimated that on May 15, about 17% of the day’s volume stemmed from similar operations.

The stock itself is running hot by technical measures. After closing Wednesday at 2,243,000 won, it hit a new 52-week high of 2,258,000 won on Thursday. The monthly gain stands at 73.69%, the distance from the 50-day moving average is roughly 70%, and the RSI sits at 68.9 — strong momentum, but a level that leaves little room for disappointment. Domestic financial investors bought a net 1.3 trillion won in Korean stocks, while foreigners sold, suggesting the rally has a strong local fundamental tailwind but is also being amplified by short-term flows from the new ETF ecosystem.

Looking ahead, SK Hynix has confidentially filed with the SEC for a possible ADR listing, targeting completion by the end of 2026. The company plans to place roughly 2% to 3% of its shares, with proceeds helping to finance chip factories in Yongin, South Korea, and Indiana. A successful U.S. listing would broaden access to global capital and tighten the pressure on rivals — assuming the memory super-cycle holds. If price gains slow, however, a stock that has already priced in years of scarcity will have little cushion.