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Contract OI history

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Nov 20, 2026 EXPIRATION

WELL $230.00 Put

WELL261120P00230000

Latest saved OI643Oct 23, 2026
Last change+171vs previous saved observation
Saved market days11Oct 02, 2026 onwards
Daily open interest Hover a point for its date and OI
WELL $230.00 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. 6433210 2026-10-02: 234 OI2026-10-05: 262 OI2026-10-06: 264 OI2026-10-07: 265 OI2026-10-08: 267 OI2026-10-09: 278 OI2026-10-14: 310 OI2026-10-15: 318 OI2026-10-16: 318 OI2026-10-21: 472 OI2026-10-23: 643 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, 2026Viewing643+171
Oct 21, 2026472+154
Oct 16, 20263180
Oct 15, 2026318+8
Oct 14, 2026310+32
Oct 09, 2026278+11
Oct 08, 2026267+2
Oct 07, 2026265+1
Oct 06, 2026264+2
Oct 05, 2026262+28
Oct 02, 2026234No prior observation