Recently, someone made $600,000 by using SK Hynix for cross-platform arbitrage! After reading this veteran's story, I have to say, they're incredibly smart and have amazing execution skills. Lucy L also provided a more detailed analysis—super professional, definitely worth checking out. From my understanding, this is essentially the same company and the same asset. In Korea, it sells for 100 won, but in the U.S., someone is willing to pay 150 won for it. And this price difference has lasted for quite a while. This is the craziest thing about SK Hynix ADR recently. Here’s roughly how it works: 1 ADR = 0.1 shares of the original Korean stock. At one point, U.S. ADRs were 51% more expensive than the original Korean shares, and there’s still about a 30% premium. Most people’s first reaction: Isn’t this easy arbitrage? Actually, it’s not. The reason can be summed up in one sentence: You can buy the cheaper one, and you can sell the expensive one, but you can’t freely convert between the two. Why? Because overseas funds can’t buy Korean stocks—they can only scramble for ADRs. Korean and U.S. stock market trading hours don’t overlap, so prices can’t sync in real time. The most critical issue is that ADR conversion quotas are limited, and the process is complicated, so the arbitrage channel isn’t smooth. Recently, some people have started trying to use Bitget’s perpetual contracts to trade this kind of price difference: Short the high-premium ADR, SKHYUSDT. Go long on the relatively cheaper Korean original stock, SKHYNIXUSDT. The bet isn’t on the stock price going up or down, but on the price gap between the two eventually narrowing. But don’t treat this as risk-free arbitrage. Because the premium could expand from 30% to 50%, you might get liquidated before it converges. Perpetual funding fees could also be charged in both directions, and the longer you hold, the higher the cost. Bitget provides tools for this kind of spread trading, but tools don’t guarantee profits. True arbitrage isn’t just about spotting the price difference—it’s about having the ability to lock it in. For price gaps without a forced convergence mechanism, the risks are still significant. Be cautious, everyone!