Key points
- 11 Korean active ETFs bought SK Hynix's US listing (SKHY) within days of its Nasdaq debut.
- SKHY closed Friday at $154.03, about 25% above the Seoul shares; the difference once reached 51%.
- A Korean fund rule blocked these ETFs from owning SK Hynix until the US listing existed.
SK Hynix's American shares had a strange kind of Friday. Most US chip stocks fell, but the ADR, trading under the ticker SKHY, rose 1.1 percent and closed at $154.03. Part of the steady buying behind it is coming from home. Korean fund managers are purchasing the American version of a Korean company, and they are paying about 25 percent more than the same shares cost in Seoul.
Maeil Business Newspaper counted eleven Korean active ETFs holding the ADR as of July 16. Two come from AssetPlus Asset Management, four each from Samsung Active Asset Management and Timefolio Asset Management, and one from Mirae Asset. Every one of them added the position right after the Nasdaq listing began trading on July 10. Eleven funds inside the first four trading days is not slow interest.
The rule that kept them out
The explanation sits in a fund rule that surprises people outside Korea. Korean ETFs built for overseas investing have to fill their portfolios with companies listed on foreign exchanges. SK Hynix traded only in Seoul, so for years these funds could not own Korea's second biggest chipmaker at all. The Nasdaq listing removed that wall in a single day, and the managers moved fast once it did.
Price played a role too. The Maeil Business report says management firms see the shares as cheaper than global memory rivals on a price to earnings basis, and some are reviewing whether to add more.
Paying extra on purpose
The unusual part is what these funds are willing to pay. Ten ADSs equal one Seoul share, so Friday's close prices the company at about $1,540 per Seoul share, roughly 2.28 million won at current exchange rates. The Seoul shares last traded at 1,842,000 won on Thursday, which is about $1,240. The Korean market was closed Friday for Constitution Day, so that price is the freshest one available. Buyers in New York are paying close to 25 percent above the home price, and I wrote on Friday about how odd that difference already was. On July 14 it reached 51 percent before narrowing. The premium has existed since the ADR's very first sessions.
What it could mean in Seoul
Analysts in Seoul read the expensive American price as a good sign for the home shares. If foreign investors keep paying more for the same company, the Seoul listing starts to look underpriced, and that thinking can pull money back toward it. The first hint arrives when Seoul opens Monday morning, its first session since the holiday.
If you grew up in Korea, the whole picture reads a little upside down. The company is based in Icheon, and the cheaper shares trade in Seoul. The newest Korean fund money is buying in New York anyway. You can follow the American listing's disclosures on our SKHY filings page, and our earlier coverage of Korea's fund rules explains how regulators have been handling the ETF side of this market.
Sources
- Maeil Business Newspaper (Korean language): 11 active ETFs added the SK Hynix ADR
- Closing prices and exchange rates: Nasdaq and Korea Exchange market data, July 16 and 17, 2026.
