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Contract OI history

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Dec 18, 2026 EXPIRATION

WELL $260.00 Call

WELL261218C00260000

Latest saved OI545Oct 23, 2026
Last change+13vs previous saved observation
Saved market days11Oct 02, 2026 onwards
Daily open interest Hover a point for its date and OI
WELL $260.00 call open interest history 11 saved observations from 2026-10-02 to 2026-10-23. Exact values and changes are listed in the table below. 5452720 2026-10-02: 376 OI2026-10-05: 377 OI2026-10-06: 377 OI2026-10-07: 377 OI2026-10-08: 377 OI2026-10-09: 378 OI2026-10-14: 378 OI2026-10-15: 379 OI2026-10-16: 408 OI2026-10-21: 532 OI2026-10-23: 545 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, 2026Viewing545+13
Oct 21, 2026532+124
Oct 16, 2026408+29
Oct 15, 2026379+1
Oct 14, 20263780
Oct 09, 2026378+1
Oct 08, 20263770
Oct 07, 20263770
Oct 06, 20263770
Oct 05, 2026377+1
Oct 02, 2026376No prior observation