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Contract OI history

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Dec 18, 2026 EXPIRATION

SIGA $4.00 Call

SIGA261218C00004000

Latest saved OI43Oct 23, 2026
Last change0vs previous saved observation
Saved market days7Oct 08, 2026 onwards
Daily open interest Hover a point for its date and OI
SIGA $4.00 call open interest history 7 saved observations from 2026-10-08 to 2026-10-23. Exact values and changes are listed in the table below. 55270 2026-10-08: 55 OI2026-10-09: 55 OI2026-10-13: 48 OI2026-10-14: 48 OI2026-10-16: 43 OI2026-10-20: 43 OI2026-10-23: 43 OI Oct 08, 2026Oct 23, 2026

All saved dates are shown. Changes compare consecutive saved observations. Missing observations are not filled with zero.

SIGA contract OI by effective market date, newest first
Market dateOpen interestChange vs prior saved day
Oct 23, 2026Viewing430
Oct 20, 2026430
Oct 16, 202643-5
Oct 14, 2026480
Oct 13, 202648-7
Oct 09, 2026550
Oct 08, 202655No prior observation