Micron fell 7% yesterday. SanDisk and Seagate fell 9%. None of them reported bad news, missed earnings, or lost a contract — and yet three of the AI buildout's biggest winners got hit harder than anything else in the market. The answer isn't in their filings. It's in the bond market, where the 30-year Treasury yield just hit a 19-year high and repriced every dollar of earnings these companies expect to make next decade. Here's the mechanism behind the move, the $3 trillion sitting in tech's footnotes, and why the Fed minutes at 2:00 PM Eastern decide whether the pressure continues.

Micron closed above $1,000 a share. The same day, Microsoft lost roughly $112 billion in market value. That wasn't a tech selloff — Applied Materials gained more than 5% while Oracle fell. Money didn't leave AI. It moved down the stack, out of the companies paying for the buildout and into the ones selling it. Memory has stopped being a product and become a cost line, and with the 30-year Treasury at the highest level of 2026, the squeeze is coming from both directions at once. Wednesday's Fed minutes — where three officials dissented for a rate hike — will decide how much worse it gets.