APH · PEAD → 8

Amphenol reported Q1 2026 EPS of $1.06 on 2026-04-29, beating the $0.95 consensus by $0.11 (+11.6%).

Print-day reaction was a sharp +3.2% versus the prior close, as the market rewarded a double-digit EPS beat with a gap-up open. The overnight session added another +2.4%, suggesting initial enthusiasm carried into after-hours with no immediate fade. Over the following three trading days, however, the stock drifted -4.2%, fully reversing the post-earnings pop and then some. Cumulative abnormal return of -2.8% versus SPY.US lands APH in neutral territory — drift reversed the initial reaction without enough magnitude to confirm a short signal; PEAD verdict is none, holding window closes 2026-07-27.