NEW YORK, September 5, 2026, 3:48 a.m. EDT — SK hynix Inc. NASDAQ:SKHY jumped 8.1% to $177 on Friday. That left its U.S. depositary shares about 46% above their Seoul-traded equivalent.
- One ADS represents one-tenth of a Korean common share.
- Friday’s Seoul close and exchange rate valued that interest near $121.51.
- The price gap widened to $55.49 per ADS, before fees and taxes.
- New ADS creation can require company consent, limiting easy arbitrage.
This is not just a currency wrinkle. Friday’s closing prices implied two strikingly different valuations for the same underlying company.
Applied across all issued shares, the Seoul price implied an $888 billion equity value. The ADS price implied roughly $1.29 trillion. That $405 billion difference is hypothetical, because only a fraction trades as ADSs.
Friday broke SKHY out of its late-August range
SKHY daily closes, August 28 through September 4, U.S. dollars
Friday close at . Source: Yahoo Finance. Prices are unadjusted daily closes.
SKHY’s 20.7 million-share volume was 64% above the prior nine-session average. The ADS has gained 9.5% since its $161.61 close on August 27.
Seoul told a calmer story. SK hynix common shares KRX:000660 rose 3.2% to 1,647,000 won, Yonhap reported. The broader KOSPI gained 1.6%.
At Friday’s 1,355.41 won-per-dollar rate, one-tenth of that share was worth $121.51. The SEC prospectus sets the one-tenth conversion ratio.
The one-tenth ADS math leaves a $55.49 gap
Friday closes and the same-day dollar-won rate
Sources: SK hynix SEC prospectus, Seoul price history, USD/KRW history and SKHY history. Arithmetic by TS2.
The prospectus explains why the spread may persist. New ADSs can be created by depositing Korean shares. Yet the depositary may need SK hynix’s consent above specified limits.
That condition can blunt the usual arbitrage trade, because an investor cannot assume cheap Seoul shares will immediately become sellable SKHY receipts. The two exchanges also operate in different currencies and hours.
The company warned about such price variations before listing. Friday offered a vivid example.
A fresh disclosure added another layer. SK hynix told the SEC Friday that Solidigm is reviewing competitiveness options. It said nothing has been decided about reported pre-IPO fundraising.
Solidigm houses the NAND business acquired from Intel Corp. NASDAQ:INTC. A capital raise could reveal value or fund expansion. It could also dilute SK hynix’s economic interest, depending on terms that do not yet exist.
The balance sheet lowers the urgency. Second-quarter cash reached 88 trillion won, while debt fell to 18.6 trillion won. The company reported 69.4 trillion won of net cash.
Two prices create a $405 billion shadow gap
Illustrative equity values using 730.49 million issued common shares
Sources: SK hynix August 19 Form 6-K and Friday market data cited above. Dollar figures and multiples are TS2 calculations.
SK hynix is also buying up to 40.004 trillion won of common shares. The estimated 24.07 million shares equal about 3.3% of issued stock. Purchases run through November 19, with cancellation planned afterward.
That program targets the Korean common shares, not the Nasdaq receipts directly. It can still benefit ADS holders through a smaller underlying share count. It cannot guarantee the premium stays intact.
Operating momentum remains exceptional. Preliminary second-quarter revenue rose 257% to 79.32 trillion won. Operating profit reached 60.54 trillion won, a 76% margin.
The company began HBM4 mass shipments during that quarter. It plans a second-half ramp. Micron Technology Inc. NASDAQ:MU and Samsung Electronics Co. KRX:005930 remain the relevant memory rivals.
Analysts are bullish, but their targets inherit the listing problem. S&P Global data compiled by StockAnalysis showed 14 analysts at Strong Buy. Their $247.31 average target stood 40% above Friday’s close.
Needham’s Quinn Bolton raised his target to $220 on August 24, Benzinga reported. That now implies 24% upside. The low consensus target of $152 sits 14% below SKHY.
Risks: HBM demand or memory prices could turn. Solidigm financing may prove dilutive. Currency swings can widen apparent gaps, while fresh ADS issuance could compress the premium sharply.
The investor decision is therefore unusually specific. Owning SK hynix is one question. Paying $177 for a claim worth $121.51 in Seoul is another.
Sources
- SK hynix September 4, 2026 Form 6-K on Solidigm reports
- SK hynix final ADS prospectus
- SK hynix August 19, 2026 buyback and cancellation filing
- SK hynix preliminary second-quarter 2026 results
- Yonhap report on the September 4 Seoul close
- Yahoo Finance SKHY price and volume history
- StockAnalysis analyst consensus sourced from S&P Global
- Benzinga SKHY analyst actions
