An ADR lets overseas investors trade exposure to a foreign company in the U.S. market. SK Hynix ADR trades in U.S. dollars, while the common share trades in Korea in won. Converting both to the same KRW basis makes the cross-market spread visible.

Calculation

WIP Labs multiplies the ADR price by USD/KRW and divides by 0.1, based on the assumption that one ADR represents 0.1 common share. The result is compared with the KOSPI-listed common-share price.

What to watch

Korean and U.S. market hours do not overlap cleanly. The ADR, common share, and FX rate can all have different timestamps. Taxes, FX spreads, fees, liquidity, and settlement frictions also matter.

Practical use

A positive spread means the ADR-implied common-share price is higher than the domestic share. A negative spread means it is lower. The metric is best used as a lightweight overnight sentiment check, not a mechanical arbitrage signal.