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Contract OI history

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Nov 20, 2026 EXPIRATION

WELL $200.00 Put

WELL261120P00200000

Latest saved OI365Oct 23, 2026
Last change+2vs previous saved observation
Saved market days11Oct 02, 2026 onwards
Daily open interest Hover a point for its date and OI
WELL $200.00 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. 3651820 2026-10-02: 275 OI2026-10-05: 275 OI2026-10-06: 275 OI2026-10-07: 275 OI2026-10-08: 281 OI2026-10-09: 308 OI2026-10-14: 363 OI2026-10-15: 363 OI2026-10-16: 363 OI2026-10-21: 363 OI2026-10-23: 365 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, 2026Viewing365+2
Oct 21, 20263630
Oct 16, 20263630
Oct 15, 20263630
Oct 14, 2026363+55
Oct 09, 2026308+27
Oct 08, 2026281+6
Oct 07, 20262750
Oct 06, 20262750
Oct 05, 20262750
Oct 02, 2026275No prior observation