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July 27, 2026 · Phase 3 readout

AZN Phase 3 readout: a negative outcome, -5.7%

On July 27, 2026, Olaparib — AstraZeneca PLC (Breast Cancer Metastatic) reached its Phase 3 readout. The result was a negative outcome, and the stock moved -5.7% in the window around the event.

The move

$189.28
1d before
$178.49
Event day
$171.61
1d after
$164.50
5d after

Pre-catalyst setup

+3.7%
30-day run-up
3492%
30-day volatility
1.0×
volume spike