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Contract OI history

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Nov 20, 2026 EXPIRATION

WELL $230.00 Call

WELL261120C00230000

Latest saved OI243Oct 23, 2026
Last change+1vs previous saved observation
Saved market days11Oct 02, 2026 onwards
Daily open interest Hover a point for its date and OI
WELL $230.00 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. 2431210 2026-10-02: 20 OI2026-10-05: 20 OI2026-10-06: 21 OI2026-10-07: 54 OI2026-10-08: 62 OI2026-10-09: 80 OI2026-10-14: 235 OI2026-10-15: 233 OI2026-10-16: 233 OI2026-10-21: 242 OI2026-10-23: 243 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, 2026Viewing243+1
Oct 21, 2026242+9
Oct 16, 20262330
Oct 15, 2026233-2
Oct 14, 2026235+155
Oct 09, 202680+18
Oct 08, 202662+8
Oct 07, 202654+33
Oct 06, 202621+1
Oct 05, 2026200
Oct 02, 202620No prior observation