SK Hynix ADR Premium and Fair Value
Compare the latest available SKHY ADR price with the currency-adjusted value of SK Hynix common shares listed in Korea as KRX:000660. A positive result is an ADR premium; a negative result is a discount.
SK Hynix stock price questions
Why is the US ADR more expensive than the Korean stock?
The displayed ADR premium reflects the US price versus the KRW-converted parity value, adjusted for the 10:1 ADS ratio, trading hours, liquidity and investor demand.
How much is the SK Hynix ADR premium?
Use the latest percentage above or select a range in the SKHY ADR premium trend chart.
What is the SK Hynix stock price?
The dashboard shows SKHY in USD and 000660 stock price in KRW with quote timestamps.
What is 000660 stock price?
000660 is SK hynix common stock listed on Korea Exchange; its latest available price is shown in the Korea card.
How many Korean shares equal 1 ADR?
One SKHY ADR represents one-tenth of one Korean ordinary share, so 10 ADRs correspond to 1 Korean share.
Can I arbitrage SK Hynix ADR and Korea shares?
Price gaps are not guaranteed arbitrage: markets close at different times and fees, FX, settlement, borrow and corporate actions can remove the spread.
Official ratio: 10 ADS = 1 Korean ordinary share. Each SKHY ADS represents one-tenth of one common share, according to the final prospectus. View the SK hynix final prospectus filed with the SEC.
How the SKHY premium is calculated
How to interpret the result
Nasdaq and the Korea Exchange generally do not trade at the same time. A current US quote may be compared with the latest Korean close, or a Korean quote with the previous US session. Always read the displayed quote times and market-status labels.
This site uses “Latest” rather than promising every observation is live. Source delays, holidays, suspensions, and failed requests can leave data stale or unavailable.
Learn more
- What is the SK Hynix ADR (SKHY)?
- How US investors may access SK Hynix stock
- SKHY premium methodology and worked example
- SKHY ADR premium history
- Why can SKHY trade away from parity?
- Nasdaq SKHY listing reference
Independent informational calculator. Not affiliated with SK hynix, Nasdaq, KRX, or any data provider. Market information may be delayed, stale, or unavailable. Not investment, tax, or legal advice.
What Is the SK Hynix ADR (SKHY)?
SK hynix Inc. (KRX: 000660) is one of the world's largest manufacturers of memory semiconductors, headquartered in Icheon, South Korea. The company is a dominant supplier of DRAM and NAND flash, and a primary producer of high-bandwidth memory (HBM) used in AI accelerators and data-center GPUs. Its common stock trades on the Korea Exchange and is one of the most widely held equities in the Korean market.
SKHY is a Level III American Depositary Receipt (ADR) listed on Nasdaq, launched in May 2025. Each SKHY ADR (also called an ADS, or American Depositary Share) represents one-tenth of one Korean ordinary share. The ADR allows US and global investors to gain economic exposure to SK hynix in US dollars during American trading hours, without opening a Korean brokerage account or handling KRW currency conversion directly. Because the underlying security is the same company, the ADR and the Korean share should theoretically trade in line after adjusting for the 10:1 ratio and the USD/KRW exchange rate.
How the ADR Premium Works
The ADR premium measures how far the US-listed price deviates from the currency-adjusted parity value of the Korean share. Parity is calculated by converting one Korean ordinary share into US-dollar-equivalent terms: the KRW price of 000660 is divided by the USD/KRW rate and then by 10 (because 10 ADRs equal one Korean share). If SKHY trades above this parity value, the difference is called a premium; if it trades below, it is a discount. The percentage shown on this page is that gap expressed as a percentage of the parity price.
Premiums and discounts arise because the two markets do not trade simultaneously and serve different investor bases. During US trading hours, the Korean market is closed, so the ADR price reflects investor expectations and order flow that have no immediate arbitrage constraint. When both markets are open or when dealers can facilitate cross-market settlement, the spread tends to narrow — but it rarely disappears entirely due to transaction costs, foreign-investment taxes in Korea, settlement lag, borrow availability, and differing liquidity.
Why Track the SKHY Premium?
For investors already holding SK hynix via the Korean listing, the ADR premium indicates how global markets are pricing the company relative to the domestic share. A widening premium may signal strong international demand or limited ADR float, while a narrowing or negative premium can suggest the opposite. Because SK hynix is a key HBM supplier for AI chipsets, the premium has also become a sentiment indicator for broader AI hardware demand.
This calculator shows the latest premium alongside the underlying US and Korean prices, the USD/KRW rate used in the calculation, and a one-year history of daily observations. All figures are sourced from public market data and updated automatically; they are provided for informational purposes only and do not constitute investment, tax, or legal advice. Always verify current prices and consult a licensed professional before making investment decisions.