October 5, 2026 · Phase 3 readout
PCVX Phase 3 readout: a positive outcome, +35.3%
+35.3%Vaxcyte, Inc. (PCVX) →
On October 5, 2026, Vaxcyte, Inc. reached its Phase 3 readout. The result was a positive outcome, and the stock moved +35.3% in the window around the event. It had already run -7.7% in the 30 days into the catalyst — the kind of pre-event run-up that often precedes binary readouts.
The move
$56.48
1d before
$76.39
Event day
$76.39
1d after
$76.39
5d after
Our prediction vs. the result
CatalystAlert called this one neutral (+0.0% expected); the stock actually moved +35.3%. Model confidence at the time: 35%.
See the full scored track recordPre-catalyst setup
-7.7%
30-day run-up
3126%
30-day volatility
1.7×
volume spike