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Contract OI history

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Mar 19, 2027 EXPIRATION

FSM $12.50 Put

FSM270319P00012500

Latest saved OI82Oct 23, 2026
Last change-4vs previous saved observation
Saved market days12Oct 02, 2026 onwards
Daily open interest Hover a point for its date and OI
FSM $12.50 put open interest history 12 saved observations from 2026-10-02 to 2026-10-23. Exact values and changes are listed in the table below. 86430 2026-10-02: 71 OI2026-10-05: 71 OI2026-10-06: 67 OI2026-10-07: 67 OI2026-10-08: 67 OI2026-10-09: 67 OI2026-10-13: 72 OI2026-10-14: 75 OI2026-10-15: 75 OI2026-10-16: 84 OI2026-10-21: 86 OI2026-10-23: 82 OI Oct 02, 2026Oct 23, 2026

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

FSM contract OI by effective market date, newest first
Market dateOpen interestChange vs prior saved day
Oct 23, 2026Viewing82-4
Oct 21, 202686+2
Oct 16, 202684+9
Oct 15, 2026750
Oct 14, 202675+3
Oct 13, 202672+5
Oct 09, 2026670
Oct 08, 2026670
Oct 07, 2026670
Oct 06, 202667-4
Oct 05, 2026710
Oct 02, 202671No prior observation