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CLOSED · 01:55 ET
Market ClerkRecap
Tue Sep 22 · markets closed1 signal on Sep 21234 insider buys this week · $209.5MCIRO short report next: Sep 29The week ahead

SION

Sionna Therapeutics, Inc.
NASDAQ · HEALTH CARE · PHARMACEUTICAL PREPARATIONS
6.00
+0.04 +0.67%
USD · close Sep 21

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Short interest

FINRA · TWICE MONTHLY
Report dateShares shortChange% of shares outAvg daily volumeDays to cover
2026-08-314.3M+51K9.51%1.6M2.6
2026-08-144.2M+49K9.40%7.4M1.0
2026-07-314.2M−1.1M9.29%618K6.8
2026-07-155.3M−265K11.63%457K11.5

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