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Contract OI history

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Dec 18, 2026 EXPIRATION

IMSR $2.50 Put

IMSR261218P00002500

Latest saved OI270Oct 23, 2026
Last change+3vs previous saved observation
Saved market days7Oct 08, 2026 onwards
Daily open interest Hover a point for its date and OI
IMSR $2.50 put open interest history 7 saved observations from 2026-10-08 to 2026-10-23. Exact values and changes are listed in the table below. 2701350 2026-10-08: 51 OI2026-10-09: 51 OI2026-10-13: 61 OI2026-10-14: 61 OI2026-10-15: 61 OI2026-10-21: 267 OI2026-10-23: 270 OI Oct 08, 2026Oct 23, 2026

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

IMSR contract OI by effective market date, newest first
Market dateOpen interestChange vs prior saved day
Oct 23, 2026270+3
Oct 21, 2026Viewing267+206
Oct 15, 2026610
Oct 14, 2026610
Oct 13, 202661+10
Oct 09, 2026510
Oct 08, 202651No prior observation