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Contract OI history

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Jan 21, 2028 EXPIRATION

WMB $55.00 Call

WMB280121C00055000

Latest saved OI163Oct 23, 2026
Last change+12vs previous saved observation
Saved market days12Oct 02, 2026 onwards
Daily open interest Hover a point for its date and OI
WMB $55.00 call open interest history 12 saved observations from 2026-10-02 to 2026-10-23. Exact values and changes are listed in the table below. 163810 2026-10-02: 151 OI2026-10-05: 151 OI2026-10-06: 151 OI2026-10-07: 151 OI2026-10-08: 151 OI2026-10-09: 151 OI2026-10-12: 151 OI2026-10-14: 151 OI2026-10-15: 151 OI2026-10-16: 151 OI2026-10-21: 151 OI2026-10-23: 163 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, 2026163+12
Oct 21, 2026Viewing1510
Oct 16, 20261510
Oct 15, 20261510
Oct 14, 20261510
Oct 12, 20261510
Oct 09, 20261510
Oct 08, 20261510
Oct 07, 20261510
Oct 06, 20261510
Oct 05, 20261510
Oct 02, 2026151No prior observation