OITracker Cboe delayed data

Contract OI history

Back to WELL

May 21, 2027 EXPIRATION

WELL $240.00 Put

WELL270521P00240000

Latest saved OI919Oct 23, 2026
Last change0vs previous saved observation
Saved market days11Oct 02, 2026 onwards
Daily open interest Hover a point for its date and OI
WELL $240.00 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. 9204600 2026-10-02: 520 OI2026-10-05: 520 OI2026-10-06: 520 OI2026-10-07: 920 OI2026-10-08: 920 OI2026-10-09: 919 OI2026-10-14: 919 OI2026-10-15: 919 OI2026-10-16: 919 OI2026-10-21: 919 OI2026-10-23: 919 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, 2026Viewing9190
Oct 21, 20269190
Oct 16, 20269190
Oct 15, 20269190
Oct 14, 20269190
Oct 09, 2026919-1
Oct 08, 20269200
Oct 07, 2026920+400
Oct 06, 20265200
Oct 05, 20265200
Oct 02, 2026520No prior observation