TSMC (TSM) news that moved the stock

What happened

GlobalFoundries announced on Oct 8, 2026 that it has signed a $2 billion, five-year manufacturing agreement with TSMC to produce silicon interposers at its Malta, New York facility. A silicon interposer is the thin, high-speed connector substrate that sits beneath processors and memory chips inside advanced AI packages (notably TSMC's CoWoS ecosystem), letting them communicate at high speeds. GF will expand capacity at Malta to make interposers tailored for TSMC's CoWoS packaging — including embedded deep trench capacitor components — and expects to become the first U.S.-based source of silicon interposers for advanced packaging. Volume production is expected to begin ramping in the first half of 2028, and the agreement provides a framework for future capacity expansion. GFS shares jumped ~6% Thursday morning to about $51, bucking a broader market selloff, while TSMC reported record Q3 revenue of $46.71B (+50% y/y) the same day.

What happened

Elon Musk confirmed on Saturday in an X post that Taiwan Semiconductor (TSMC) is in discussions to join his Terafab chip venture, writing 'Just discussions, but something may come of it' in response to a report from Asian tech Substack Culpium saying TSMC was exploring how to help run Terafab's Texas semiconductor factories. Intel shares slid about 3.7-4% premarket to $114.95 on Monday, snapping a run that had the stock up 25% over the prior month, while TSMC's U.S. shares climbed 1.8% and its Taiwan shares rose ~3%. Oppenheimer semiconductor analyst Rick Schafer wrote Monday that Intel is currently slated to supply its 14A process to Terafab — 'a role TSMC's own nodes could replace' — with one option having TSMC own and run a fab serving only Tesla, SpaceX, and xAI while SpaceX invests or commits volume. Musk later acknowledged that any TSMC chips would likely supplement, not replace, Intel's role.