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Contract OI history

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Nov 20, 2026 EXPIRATION

FSM $12.50 Put

FSM261120P00012500

Latest saved OI537Oct 23, 2026
Last change0vs 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. 5442720 2026-10-02: 57 OI2026-10-05: 57 OI2026-10-06: 55 OI2026-10-07: 55 OI2026-10-08: 55 OI2026-10-09: 55 OI2026-10-13: 85 OI2026-10-14: 544 OI2026-10-15: 539 OI2026-10-16: 538 OI2026-10-21: 537 OI2026-10-23: 537 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, 2026Viewing5370
Oct 21, 2026537-1
Oct 16, 2026538-1
Oct 15, 2026539-5
Oct 14, 2026544+459
Oct 13, 202685+30
Oct 09, 2026550
Oct 08, 2026550
Oct 07, 2026550
Oct 06, 202655-2
Oct 05, 2026570
Oct 02, 202657No prior observation