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Contract OI history

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Mar 19, 2027 EXPIRATION

WMB $65.00 Put

WMB270319P00065000

Latest saved OI366Oct 23, 2026
Last change+4vs previous saved observation
Saved market days12Oct 02, 2026 onwards
Daily open interest Hover a point for its date and OI
WMB $65.00 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. 3661830 2026-10-02: 305 OI2026-10-05: 307 OI2026-10-06: 307 OI2026-10-07: 313 OI2026-10-08: 313 OI2026-10-09: 313 OI2026-10-12: 313 OI2026-10-14: 313 OI2026-10-15: 306 OI2026-10-16: 356 OI2026-10-21: 362 OI2026-10-23: 366 OI Oct 02, 2026Oct 23, 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 23, 2026366+4
Oct 21, 2026Viewing362+6
Oct 16, 2026356+50
Oct 15, 2026306-7
Oct 14, 20263130
Oct 12, 20263130
Oct 09, 20263130
Oct 08, 20263130
Oct 07, 2026313+6
Oct 06, 20263070
Oct 05, 2026307+2
Oct 02, 2026305No prior observation