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Search CatalystAlert
Search for companies, drugs, and catalysts
Search for companies, drugs, and catalysts
Search for companies, drugs, and catalysts
On July 31, 2026, Selinexor (combination therapy) — Karyopharm Therapeutics Inc. (Relapsed/Refractory Diffuse Large B-cell Lymphoma) reached its Phase 3 readout. The result was a negative outcome, and the stock moved -72.6% in the window around the event. It had already run -25.8% in the 30 days into the catalyst — the kind of pre-event run-up that often precedes binary readouts.
CatalystAlert called this one up (+2.6% expected); the stock actually moved -72.6%. Model confidence at the time: 40%.
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