SK hynix's American Depositary Shares (ADS) surged 12.76% on their Nasdaq debut May 10 (local time), closing at $168.01 against an offering price of $149. The South Korean memory chipmaker's first-day performance drew substantial global investor interest, with trading volume reaching nearly 106 million shares and approximately half concentrated in the opening 30 minutes. The closing price converted to roughly 2.532 million won per Korean common share, representing a 16% premium over the domestic stock's May 10 close of 2.18 million won, while SK hynix's market capitalization of approximately $1.2 trillion exceeded US memory chip competitor Micron's $1.1 trillion valuation.
SK hynix ADS Records 106 Million Share Trading Volume on Debut Day
SK hynix ADS traded at an intraday high of $177 on May 10 (local time) before settling at $168.01. One ADS represents one-tenth of a Korean common share. According to the source, the debut day's total trading volume approached 106 million shares, with nearly half the volume occurring within the first 30 minutes of trading.
JJ Kinahan, Senior Vice President of CBOE Global Markets, stated that "SK hynix ADR traded over 52 million shares within 30 minutes of its first Nasdaq trading session" and described the volume as "tremendous, injecting vitality into the market."
The securities industry views the first-day performance as confirmation of high global investor interest. The May 10 closing price in won terms—approximately 2.532 million won per Korean share—stood roughly 16% above the domestic market's May 10 close of 2.18 million won.
Analysts Question Sustainability of US Market Premium Over Korean Shares
Shinhan Investment Securities analyzed that SK hynix ADS is likely to trade above the converted price of Korean shares in the early listing period. The firm cited factors including dollar-denominated trading accessibility for US investors, intraday trading flexibility during US market hours, and inflows from funds unable to directly invest in Korean equities.
However, whether the elevated ADS pricing will directly lift Korean share prices remains uncertain. The premium formed in the US market may transfer to the domestic market, but it may also persist as a separate US-market premium.
Noh Dong-gil, researcher at Shinhan Investment Securities, stated: "What domestic investors should watch is not the first-day ADS gain, but how much of the US-formed premium transfers to Korean shares. Listing anticipation and dilution concerns from the offering are already substantially reflected in the stock price, so going forward, whether existing hedge and short positions unwind will be a core variable for Korean share prices."
TSMC Case Study Shows Structural Constraints on Premium Transfer
The securities industry cites TSMC as a representative case. TSMC's US ADS frequently traded at higher prices than Taiwan shares, but this price gap persisted due to restrictions in converting Taiwan shares to US ADS, preventing easy arbitrage between the two markets.
SK hynix similarly does not operate a fully free conversion structure between Korean shares and ADS. The company can limit depositary share levels, and converting Korean shares to ADS requires specific procedures. However, whether the supply is structurally constrained to the same degree as TSMC remains unconfirmed, meaning further observation is needed to determine if the US-market premium will persist long-term.
FAQ
What was SK hynix's ADS closing price on its Nasdaq debut?
SK hynix ADS closed at $168.01 on May 10 (local time), a 12.76% gain over the $149 offering price.
How does SK hynix's market cap compare to Micron after the debut?
Based on the May 10 closing price, SK hynix's market capitalization reached approximately $1.2 trillion, exceeding Micron's $1.1 trillion valuation.
Why might the US ADS premium not fully transfer to Korean shares?
According to Shinhan Investment Securities, SK hynix does not have a fully free conversion structure between Korean shares and ADS—the company can limit depositary share levels and conversion requires specific procedures, potentially allowing a separate US-market premium to persist.
