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Contract OI history

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Dec 18, 2026 EXPIRATION

FSM $10.00 Put

FSM261218P00010000

Latest saved OI132Oct 23, 2026
Last change-1vs previous saved observation
Saved market days12Oct 02, 2026 onwards
Daily open interest Hover a point for its date and OI
FSM $10.00 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. 133660 2026-10-02: 109 OI2026-10-05: 109 OI2026-10-06: 112 OI2026-10-07: 112 OI2026-10-08: 110 OI2026-10-09: 110 OI2026-10-13: 121 OI2026-10-14: 121 OI2026-10-15: 133 OI2026-10-16: 133 OI2026-10-21: 133 OI2026-10-23: 132 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, 2026Viewing132-1
Oct 21, 20261330
Oct 16, 20261330
Oct 15, 2026133+12
Oct 14, 20261210
Oct 13, 2026121+11
Oct 09, 20261100
Oct 08, 2026110-2
Oct 07, 20261120
Oct 06, 2026112+3
Oct 05, 20261090
Oct 02, 2026109No prior observation