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Contract OI history

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Dec 18, 2026 EXPIRATION

FSM $12.50 Call

FSM261218C00012500

Latest saved OI1,079Oct 23, 2026
Last change+54vs previous saved observation
Saved market days12Oct 02, 2026 onwards
Daily open interest Hover a point for its date and OI
FSM $12.50 call open interest history 12 saved observations from 2026-10-02 to 2026-10-23. Exact values and changes are listed in the table below. 1,0795390 2026-10-02: 622 OI2026-10-05: 620 OI2026-10-06: 622 OI2026-10-07: 622 OI2026-10-08: 622 OI2026-10-09: 522 OI2026-10-13: 522 OI2026-10-14: 523 OI2026-10-15: 523 OI2026-10-16: 729 OI2026-10-21: 1,025 OI2026-10-23: 1,079 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, 2026Viewing1,079+54
Oct 21, 20261,025+296
Oct 16, 2026729+206
Oct 15, 20265230
Oct 14, 2026523+1
Oct 13, 20265220
Oct 09, 2026522-100
Oct 08, 20266220
Oct 07, 20266220
Oct 06, 2026622+2
Oct 05, 2026620-2
Oct 02, 2026622No prior observation