ILMN · PEAD → 0

Illumina reported Q2 2026 EPS of $1.31 on 2026-07-30, beating the $1.23 consensus by $0.08 (+6.5%); no prior-year comparable available in the current feed.

Print-day reaction was +5.3%, as ILMN closed at $205.09 versus the prior close of $194.82, a clean beat-driven gap up. The overnight session reversed modestly, with the T+1 open at $203.28 representing a -0.9% gap down from the T+0 close. Over trading days 1 through 3, the stock drifted a further -1.0%, erasing a portion of the initial move rather than extending it. Cumulative abnormal return versus SPY.US over the 3-day window stands at -1.5%, sitting between the ±3% PEAD thresholds; the verdict is none, and no drift trade is signalled through 2026-10-27.