MPWR · PEAD ↑ 80

Monolithic Power Systems reported Q3 2026 EPS of $6.03 on 2026-10-29, missing the $6.80 consensus by $0.77 (-11.3%).

Print-day reaction was -1.0% versus the prior close, a contained initial drawdown despite the meaningful EPS miss. The overnight gap to the T+1 open extended the decline by a further -2.1%, suggesting residual seller pressure after the close. Over the following two trading sessions, however, price reversed sharply, drifting +9.6% from T+1 close to T+3 close — a decisive repudiation of the initial direction. Cumulative abnormal return of +12.0% versus SPY.US puts this firmly in PEAD long territory; per the documented drift pattern, the read is held through 2027-01-26.