Interactive Brokers just announced that U.S. retail investors can now trade Korean stocks directly. Cue the press releases about "expanding access" and "global opportunities." But before you rush to buy Seoul-listed stocks, let's talk about whether this actually matters.

First, the facts: IBKR is opening access to the Korea Stock Exchange, which means you can now buy shares in companies like Samsung, Hyundai, and other Korean blue chips without using ADRs or Korean ETFs. On paper, that sounds great. More access, more choices, more diversification.

But here's what the press release doesn't tell you.

Currency risk. When you buy Korean stocks, you're buying them in Korean won. If the won weakens against the dollar, your returns get hit even if the stock goes up. Currency fluctuations can easily wipe out 5-10% of your gains (or add to your losses). Most retail investors don't think about this until it's too late.

Liquidity concerns. Korean stocks don't trade on U.S. hours. The Seoul market opens when most Americans are asleep. That means if something goes wrong—earnings miss, geopolitical news, whatever—you can't react in real time. You're stuck waiting for the next trading session.

Regulatory differences. Korean accounting standards aren't the same as U.S. GAAP. Corporate governance rules are different. Shareholder rights are different. If something goes wrong with a company, good luck navigating a foreign legal system to get your money back.

Tax complexity. Foreign stocks create foreign tax headaches. You might owe taxes in Korea and the U.S. You'll need to file additional paperwork. Your tax software probably won't handle it automatically. Unless you're investing serious money, the hassle might not be worth it.

So why is IBKR doing this? Because they make money on trading volume. The more markets they open, the more trades they generate. That's great for them. But it's only great for you if you have a specific reason to buy Korean stocks.

If you're already deeply diversified in U.S. markets and you want exposure to Korean tech or manufacturing companies that don't have good U.S. equivalents, this could be useful. If you have a specific thesis about Korean growth that you can't capture through existing ETFs, fine.