June 4, 2026 · Data Readout
ZBIO Data Readout: a positive outcome, +5.6%
On June 4, 2026, Zenas BioPharma, Inc. reached its Data Readout. The result was a positive outcome, and the stock moved +5.6% in the window around the event. It had already run -12.5% in the 30 days into the catalyst — the kind of pre-event run-up that often precedes binary readouts.
The move
$17.40
1d before
$18.38
Event day
$17.47
1d after
$18.42
5d after
Our prediction vs. the result
CatalystAlert called this one neutral (+0.0% expected); the stock actually moved +5.6%. Model confidence at the time: 35%.
See the full scored track recordPre-catalyst setup
-12.5%
30-day run-up
7225%
30-day volatility
0.7×
volume spike