How to buy SK Hynix stock in the US
SK Hynix makes most of the HBM sitting next to Nvidia's GPUs, which makes it one of the most important AI stocks in the world. It is also listed in Seoul, which makes it one of the hardest for Americans to actually trade. Here is an honest tour of your options, including the one this page is obviously building up to.
Option 1: the HXSCL ADR
There is an SK Hynix ADR in the US under the ticker HXSCL. It is unsponsored, meaning the company has nothing to do with it, and it trades over the counter rather than on a real exchange. Volume is thin. Spreads are wide. The price mostly echoes the last Seoul close instead of discovering anything on its own, and some brokerages will not touch OTC foreign ordinaries at all, or charge extra when they do. Fine for parking a long-term position. Bad for trading.
Option 2: a Korean brokerage account
Direct access to the Korea Exchange means opening an account with a Korean securities firm. For a non-resident this is paperwork-heavy, most firms will not onboard US retail customers, and you still inherit Seoul trading hours, which run overnight US time, roughly 7pm to 2:30am Eastern depending on the season. You would be setting alarms to trade in the middle of the night.
Option 3: Korea ETFs
Funds like EWY hold SK Hynix as a top position and trade on US exchanges like any other ETF. The catch is dilution. You are buying the whole Korean market, so a big SK Hynix move gets watered down by banks, carmakers and everything else in the basket. It is exposure, but it is not the trade.
Option 4: trade it through Based
Hyperliquid, a decentralised trading platform, carries a direct SK Hynix market, quoted in USD, open 24 hours a day, every day. Based is the self-custody wallet that makes trading it easy. No Korean paperwork, no ADR spread, no waiting for Seoul, no brokerage account, no bank account. To be clear about the instrument: it is a perpetual future that tracks the SK Hynix share price. You get pure price exposure, long or short, not the share itself, and like any perp it carries liquidation risk and funding fees. Based is not a broker.
SK Hynix (SKHX)
$1,247-1.2%24h
KRX (Seoul) · South Korea · quoted in USD
Why the hours matter so much for this stock
SK Hynix earnings, HBM supply deals and Korean export data all land in Korean hours. By the time New York wakes up, the move is over and the ADR just opens wherever Seoul left it. A 24/7 market removes the whole problem. When the news breaks at 10pm Eastern, you trade at 10pm Eastern.
The same logic applies to the rest of the memory complex. Micron gaps on Korean news. So does SanDisk, since NAND pricing is set largely in Asia. The memory stocks hub covers how the pieces fit together. And if pre-IPO names are more your thing, there is a SpaceX market too.
Fees are flat and public: stock perps start at 0.011% taker and 0.005% maker, all-in, before any staking discounts. The full schedule is on the fees page.
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Frequently asked questions
- Can Americans buy SK Hynix stock?
- Not easily through a normal broker. SK Hynix is listed on the Korea Exchange, and most US brokerages do not offer direct access to Korean shares. Americans typically settle for the thin HXSCL ADR, a Korea ETF like EWY, or synthetic exposure. Through Based you can trade a 24/7 SK Hynix market on Hyperliquid from a self-custodial wallet, with no brokerage account and no bank account.
- What is the SK Hynix ADR?
- HXSCL is an unsponsored American Depositary Receipt that trades over the counter in the US. Unsponsored means SK Hynix itself has no involvement in it. Volume is thin, spreads are wide, and the price mostly just echoes wherever Seoul closed. It works for a buy-and-hold position, but it is a poor instrument for actually trading the stock.
- How do I trade Korean stocks from the US?
- You have four routes: OTC ADRs like HXSCL, opening an account with a Korean broker, Korea-focused ETFs, or trading Hyperliquid's 24/7 markets on Korean names through a self-custody wallet like Based. The first three all confine you to someone else's hours. Through Based the SK Hynix market is open around the clock, priced in USD, and traded from a wallet you control.
- Does SK Hynix trade on weekends on Based?
- Yes. The Hyperliquid market runs 24/7, so through Based you can trade SK Hynix on a Saturday afternoon in the US even though the Korea Exchange will not open again until Sunday evening US time. You are trading a perpetual future that tracks the share price, not the Seoul-listed share itself, with liquidation risk and funding fees like any perp.
Start in three steps
- Step 1
Connect a wallet
Any self-custodial wallet works. No account application, no paperwork.
- Step 2
Fund it
Deposit USDC. You do not need a bank account to do it.
- Step 3
Trade 24/7
Stock perps, crypto perps and prediction markets. Nights, weekends, holidays.
Based is a self-custody wallet, not a broker. Markets are perpetual futures on Hyperliquid: derivatives with liquidation risk and funding fees, not the underlying stocks or coins.