The Korea Glut Scare Lasted 48 Hours. Micron Ended It.

The 48-Hour Round Trip

MU went into Micron's June 24 report as one of the most hated names on the tape. Two sessions earlier, a South Korea–led memory selloff cratered the whole complex — the KOSPI fell nearly 10% and tripped circuit breakers twice, SK Hynix and Samsung each dropped about 12%, and Micron closed June 23 down roughly 13% before sliding again into the print. The trigger was a report that SK Hynix was slowing its HBM4 ramp, which the tape read as the first crack in AI memory demand and the opening act of a supply glut.

Peak-to-trough, MU shed close to a quarter of its value in 48 hours on a fear that turned out to be backwards. On Hyperliquid the perp is now up 17.90% over the last 20 hours to about $1,181 on roughly $875M of 24h volume — round-tripping the entire scare and then some.

The Print That Inverted the Bear Case

The numbers didn't beat — they steamrolled. Micron posted record fiscal Q3 revenue of $41.46 billion, up from $23.86 billion the prior quarter and just $9.30 billion a year ago, at a record 84.9% non-GAAP gross margin and non-GAAP EPS of $25.11 against roughly $20.5 expected. The core data center unit did $11.52 billion, up more than sevenfold from $1.53 billion a year earlier at an 87% gross margin, while the HBM-heavy Cloud Memory unit alone booked $13.77 billion.

Then the guide did the real damage: Q4 revenue of $50 billion ± $1 billion versus about $43 billion consensus, at roughly 86% gross margin, with HBM described as sold out through 2027 and demand stretching into 2028. A glut is the absence of demand at price. Micron just printed the exact opposite, and the stock jumped double digits after hours before the perp carried it higher.

The Capex Line Is Still the Real Risk

The one number bears can still hold onto isn't on the income statement — it's capex. Micron spent $7.1 billion in Q3 alone, guided fiscal 2026 spending to about $27 billion, and flagged fiscal 2027 capex above the mid-$40 billion range. That is the kind of supply commitment that has marked the top of every prior memory cycle, and it's the part of this print worth respecting.

What's different this time is that the new capacity is contracted before it's poured — HBM booked years out under locked pricing rather than dumped into a spot market. And the move that started the panic, SK Hynix redirecting capacity toward conventional DRAM, is a margin decision, not a demand warning. The glut thesis isn't dead — it's just early. For the next leg, the only number that mattered was $50 billion.