August 31, 2026 · Phase 3 readout
RHHBY Phase 3 readout: a positive outcome, +5.4%
On August 31, 2026, Sefaxersen (RO7434656) — Roche Holding AG (Primary IgA Nephropathy) reached its Phase 3 readout. The result was a positive outcome, and the stock moved +5.4% in the window around the event. It had already run +7.2% in the 30 days into the catalyst — the kind of pre-event run-up that often precedes binary readouts.
The move
$50.32
1d before
$53.04
Event day
$53.04
1d after
$52.17
5d after
Pre-catalyst setup
+7.2%
30-day run-up
2918%
30-day volatility
2.3×
volume spike