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Contract OI history

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Nov 20, 2026 EXPIRATION

FMS $17.50 Put

FMS261120P00017500

Latest saved OI389Oct 23, 2026
Last change+9vs previous saved observation
Saved market days11Oct 02, 2026 onwards
Daily open interest Hover a point for its date and OI
FMS $17.50 put open interest history 11 saved observations from 2026-10-02 to 2026-10-23. Exact values and changes are listed in the table below. 3891940 2026-10-02: 0 OI2026-10-05: 0 OI2026-10-06: 100 OI2026-10-07: 100 OI2026-10-08: 380 OI2026-10-09: 380 OI2026-10-13: 380 OI2026-10-14: 380 OI2026-10-16: 380 OI2026-10-20: 380 OI2026-10-23: 389 OI Oct 02, 2026Oct 23, 2026

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

FMS contract OI by effective market date, newest first
Market dateOpen interestChange vs prior saved day
Oct 23, 2026Viewing389+9
Oct 20, 20263800
Oct 16, 20263800
Oct 14, 20263800
Oct 13, 20263800
Oct 09, 20263800
Oct 08, 2026380+280
Oct 07, 20261000
Oct 06, 2026100+100
Oct 05, 202600
Oct 02, 20260No prior observation