SK Hynix Shares Plummet Over 15% in Seoul Amidst Profit-Taking and Valuation Debate Following Nasdaq Debut

SK Hynix Inc. saw its shares tumble more than 15% in Seoul on Monday, marking the semiconductor giant's worst daily performance. This sharp decline followed its impressive Nasdaq debut where the chipmaker's stock had soared. The market reaction is attributed to significant profit-taking by investors and an ongoing reassessment of the company's valuation.

On Monday, SK Hynix shares closed 15.4% lower, according to LSEG data, experiencing its largest single-day fall in history. This reversal came hot on the heels of the South Korean memory-chip maker's Wall Street debut last Friday, where its stock surged 13%, signaling robust U.S. investor appetite for AI-linked semiconductor companies.

The downturn reflects a blend of investors cashing in on recent gains and a period of uncertainty regarding the fair valuation of its U.S.-listed shares relative to its Korean counterparts. Analysts suggest that the introduction of the ADRs has effectively established a new benchmark for evaluating the company.

Daniel Yoo, a global strategist at Yuanta Securities, commented on "Squawk Box Asia," stating, "Everybody's really confused about what's going to happen to the memory demand and where the fair price is." He emphasized that the market is grappling with the balance of demand versus supply and the appropriate valuation multiples.

Yoo highlighted that while Taiwan Semiconductor Manufacturing Co.'s U.S.-listed ADRs typically trade at a 13% to 14% premium over its domestic shares, SK Hynix's recent movements have created a discount rate exceeding 20% between its U.S. and Korean listings. He also suggested that the sell-off was partly influenced by the mechanics of the ADR offering, viewing it as an "additional share issuance" that increased the available supply of stock, leading the market to perceive it as a "correctional period" for the company domestically.

Despite the immediate volatility, Yoo anticipates that the pullback will likely be temporary. He maintains that structural AI demand continues to outpace supply, and he expects shares to move "in the right direction" over the next six to 12 months.

Phillip Wool, chief research officer at Rayliant Global Advisors, echoed this sentiment, downplaying the recent weakness in Asian AI hardware stocks. He characterized it more as a portfolio rebalancing exercise rather than an indication of a deteriorating industry outlook. Wool noted that many investors had built considerable positions in South Korean and Taiwanese AI chipmakers after their strong performance, and "prudent risk management suggests you have to scale those back."

Wool affirmed that the selling does not signal a reduction in excitement surrounding AI hardware. He also pointed out that AI investment is broadening beyond just semiconductors, which should nonetheless continue to benefit key memory suppliers like SK Hynix.