Monday was a split-screen. In New York, the Dow closed at a record 53,055.91 — calm, orderly, almost boring. In Seoul, nothing is boring.
Samsung reported preliminary quarterly operating profit of roughly 89.4 trillion won — about $58 billion. That is up about nineteen-fold from a year earlier.
Read that again. One company earned about $58 billion in three months, mostly by selling memory chips into the AI build-out. Revenue more than doubled, to a record 171 trillion won.
Samsung shares are up about 150% this year and roughly 415% over the past year. Citigroup just raised its 2026 profit forecast for the company by about 20%.
SK Hynix — the other half of Korea’s memory duopoly — is up about 765% in a year and is now worth more than $1 trillion. It just kicked off a $28 billion U.S. capital raise, among the biggest ever.
Funny detail: its Seoul shares actually slipped on that news. Dilution — issuing new shares that shrink each old share’s slice — still counts, even in a mania. A rare flicker of arithmetic.
The fever around it
Korea’s Kospi index is up 91.1% this year. But here is the number that tells you what kind of market this is.
Over the past year, the Kospi has moved 2% or more in a single day 77 times. The S&P 500 has done it five times. That is not an index acting like a market. That is an index acting like one hot stock.
Wall Street noticed the crowd. A 2x SK Hynix product — a fund that doubles each day’s move, up and down — is now the world’s largest leveraged single-stock vehicle. A memory-chip ETF launched in April became the fastest ever to reach $20 billion.
Now the tell. While the products multiplied, the professionals left. Foreign investors pulled more than $100 billion out of Korea in the first half — $30 billion in June alone. The people selling the fever are not buying it.
Both things can be true, because the asset and the wrapper are different things. Samsung’s profits are audited money, not a story. But in a market that swings 2% or more 77 times a year, daily leverage is a wood chipper.
You already own it
If you hold a broad international index fund, you already own Samsung and SK Hynix. Sized by the market. Bought before the fever. No extra effort required.
In fact, Korea and Taiwan together now make up roughly half of the entire emerging-markets index. You captured the 765% without ever having to decide to.
The only decision left is whether to buy the boom a second time, at these prices, through a leveraged wrapper. That decision has a terrible track record.
So: treat any pitch containing “daily,” “2x,” or “single-stock” as a product being sold, not an investment being offered. Notice who is selling into the strength. And if the AI-memory story tempts you, express it through diversified funds — booms are survivable, but leverage on top of booms usually is not.