REGN · PEAD ↑ 80

Regeneron reported Q3 2026 EPS of $18.43 on 2026-10-30 (before market open), beating the $13.76 consensus by $4.67 (+33.9%).

Print-day reaction was +13.3% versus the prior close, as the stock vaulted from $818.77 to $927.89 on the earnings open — a decisive immediate re-rating. The overnight gap into T+1 was essentially flat at -0.07%, indicating the market held its conviction with no meaningful after-hours fade. Over the following two trading days (T+1 through T+3), the stock drifted -3.2%, giving back a portion of the initial surge but remaining well above pre-earnings levels. Cumulative abnormal return of +13.9% versus SPY.US firmly places this in PEAD long territory; the documented drift pattern holds through the window ending 2027-01-27.