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Contract OI history

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Nov 20, 2026 EXPIRATION

WELL $220.00 Put

WELL261120P00220000

Latest saved OI281Oct 23, 2026
Last change+17vs 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. 2811400 2026-10-02: 22 OI2026-10-05: 22 OI2026-10-06: 40 OI2026-10-07: 44 OI2026-10-08: 44 OI2026-10-09: 68 OI2026-10-14: 68 OI2026-10-15: 70 OI2026-10-16: 74 OI2026-10-21: 264 OI2026-10-23: 281 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, 2026Viewing281+17
Oct 21, 2026264+190
Oct 16, 202674+4
Oct 15, 202670+2
Oct 14, 2026680
Oct 09, 202668+24
Oct 08, 2026440
Oct 07, 202644+4
Oct 06, 202640+18
Oct 05, 2026220
Oct 02, 202622No prior observation