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Contract OI history

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Jan 21, 2028 EXPIRATION

WMB $30.00 Put

WMB280121P00030000

Latest saved OI188Oct 23, 2026
Last change+7vs previous saved observation
Saved market days12Oct 02, 2026 onwards
Daily open interest Hover a point for its date and OI
WMB $30.00 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. 188940 2026-10-02: 166 OI2026-10-05: 166 OI2026-10-06: 166 OI2026-10-07: 166 OI2026-10-08: 178 OI2026-10-09: 178 OI2026-10-12: 178 OI2026-10-14: 178 OI2026-10-15: 178 OI2026-10-16: 178 OI2026-10-21: 181 OI2026-10-23: 188 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, 2026Viewing188+7
Oct 21, 2026181+3
Oct 16, 20261780
Oct 15, 20261780
Oct 14, 20261780
Oct 12, 20261780
Oct 09, 20261780
Oct 08, 2026178+12
Oct 07, 20261660
Oct 06, 20261660
Oct 05, 20261660
Oct 02, 2026166No prior observation