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AFTER HRS · 19:05 ET
Market ClerkRecap
Wed Oct 21 · after hours2 signals today106 insider buys this week · $305.5MCIRO short report next: Oct 31The week ahead

IONS

IONIS PHARMACEUTICALS INC
NASDAQ · HEALTH CARE · PHARMACEUTICAL PREPARATIONS
44.27
−1.13 −2.49%
USD · Oct 21, 07:00 p.m. ET

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Short interest

FINRA · TWICE MONTHLY
Report dateShares shortChange% of shares outAvg daily volumeDays to cover
2026-08-3120.9M+15K12.59%2.3M9.2
2026-08-1420.9M−557K12.58%2.2M9.6
2026-07-3121.5M+1.4M12.92%3.4M6.3
2026-07-1520M+2.6M12.06%5.5M3.7

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