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Contract OI history

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May 21, 2027 EXPIRATION

WELL $220.00 Put

WELL270521P00220000

Latest saved OI3,282Oct 23, 2026
Last change+200vs previous saved observation
Saved market days11Oct 02, 2026 onwards
Daily open interest Hover a point for its date and OI
WELL $220.00 put open interest history 11 saved observations from 2026-10-02 to 2026-10-23. Exact values and changes are listed in the table below. 3,2821,6410 2026-10-02: 2,718 OI2026-10-05: 2,718 OI2026-10-06: 2,718 OI2026-10-07: 2,714 OI2026-10-08: 2,714 OI2026-10-09: 2,714 OI2026-10-14: 2,713 OI2026-10-15: 2,713 OI2026-10-16: 2,713 OI2026-10-21: 3,082 OI2026-10-23: 3,282 OI Oct 02, 2026Oct 23, 2026

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

WELL contract OI by effective market date, newest first
Market dateOpen interestChange vs prior saved day
Oct 23, 2026Viewing3,282+200
Oct 21, 20263,082+369
Oct 16, 20262,7130
Oct 15, 20262,7130
Oct 14, 20262,713-1
Oct 09, 20262,7140
Oct 08, 20262,7140
Oct 07, 20262,714-4
Oct 06, 20262,7180
Oct 05, 20262,7180
Oct 02, 20262,718No prior observation