Allegro MicroSystems stock jumps on Q3 beat as traders chase the next catalyst
NEW YORK, Jan 29, 2026, 13:18 EST — Regular session. Allegro MicroSystems shares climbed roughly 8.5% to $37.50 in Thursday’s afternoon session, buoyed by a sharp rise in quarterly sales and new March-quarter guidance. The chipmaker’s stock fluctuated from $34.56 to $39.75, outpacing the broader semiconductor sector, which dipped. The iShares Semiconductor ETF fell around 0.9%, while auto-focused rivals ON…