US AI stock sell-off shakes markets from Wall Street to Asia
TL;DR
A US tech sell-off spilled across global markets on Tuesday: the Nasdaq closed 2.2 percent lower, the S&P 500 fell 1.43 percent, while the Dow stayed broadly steady. The trigger was less the US war with Iran and more a valuation check on AI companies and chipmakers after this year's market records. Alphabet dropped 5 percent on Monday after two prominent AI researchers left the company. SpaceX fell 16 percent as its post-IPO momentum faded.
Nauti's Take
This does not prove the AI boom is over. It is more like the first serious stress test for a story that has framed almost every cost as an investment in the future.
If data centers, chips and models keep being financed with debt, markets will eventually demand visible cash flows. PR will not be enough, even if the technology itself remains real.
Briefingshow
The sell-off shows how dependent markets have become on a small cluster of AI and chip stocks. When seven tech companies account for about 30 percent of the S&P 500, a valuation wobble can quickly become a broader market risk. Higher interest rates would add pressure because AI infrastructure is highly capital-intensive.
Sources