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November 8, 2022 · earnings

AMPH earnings: a negative outcome, -9.4%

On November 8, 2022, Amphastar Pharmaceuticals, Inc. reached its earnings. The result was a negative outcome, and the stock moved -9.4% in the window around the event.

The move

$30.10
1d before
$27.28
Event day
$28.26
1d after
$28.31
5d after

Pre-catalyst setup

+2.5%
30-day run-up
3625%
30-day volatility
0.8×
volume spike