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Contract OI history

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Oct 30, 2026 EXPIRATION

WMB $66.00 Put

WMB261030P00066000

Latest saved OI17,674Oct 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
WMB $66.00 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. 17,6758,8370 2026-10-02: 17,206 OI2026-10-05: 17,445 OI2026-10-06: 17,435 OI2026-10-07: 17,435 OI2026-10-08: 17,436 OI2026-10-09: 17,432 OI2026-10-12: 17,432 OI2026-10-14: 17,430 OI2026-10-15: 17,430 OI2026-10-16: 17,431 OI2026-10-21: 17,675 OI2026-10-23: 17,674 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, 202617,674-1
Oct 21, 2026Viewing17,675+244
Oct 16, 202617,431+1
Oct 15, 202617,4300
Oct 14, 202617,430-2
Oct 12, 202617,4320
Oct 09, 202617,432-4
Oct 08, 202617,436+1
Oct 07, 202617,4350
Oct 06, 202617,435-10
Oct 05, 202617,445+239
Oct 02, 202617,206No prior observation