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Contract OI history

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Nov 20, 2026 EXPIRATION

WMB $75.00 Put

WMB261120P00075000

Latest saved OI2,378Oct 21, 2026
Last change+1vs previous saved observation
Saved market days11Oct 02, 2026 onwards
Daily open interest Hover a point for its date and OI
WMB $75.00 put open interest history 11 saved observations from 2026-10-02 to 2026-10-21. Exact values and changes are listed in the table below. 2,3781,1890 2026-10-02: 2,232 OI2026-10-05: 2,228 OI2026-10-06: 2,228 OI2026-10-07: 2,228 OI2026-10-08: 2,228 OI2026-10-09: 2,231 OI2026-10-12: 2,232 OI2026-10-14: 2,377 OI2026-10-15: 2,377 OI2026-10-16: 2,377 OI2026-10-21: 2,378 OI Oct 02, 2026Oct 21, 2026

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

WMB contract OI by effective market date, newest first
Market dateOpen interestChange vs prior saved day
Oct 21, 2026Viewing2,378+1
Oct 16, 20262,3770
Oct 15, 20262,3770
Oct 14, 20262,377+145
Oct 12, 20262,232+1
Oct 09, 20262,231+3
Oct 08, 20262,2280
Oct 07, 20262,2280
Oct 06, 20262,2280
Oct 05, 20262,228-4
Oct 02, 20262,232No prior observation