OITracker Cboe delayed data

Contract OI history

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Dec 18, 2026 EXPIRATION

W $72.50 Put

W261218P00072500

Latest saved OI179Oct 23, 2026
Last change0vs previous saved observation
Saved market days12Oct 02, 2026 onwards
Daily open interest Hover a point for its date and OI
W $72.50 put open interest history 12 saved observations from 2026-10-02 to 2026-10-23. Exact values and changes are listed in the table below. 2251120 2026-10-02: 225 OI2026-10-05: 225 OI2026-10-06: 225 OI2026-10-07: 225 OI2026-10-08: 225 OI2026-10-09: 225 OI2026-10-13: 225 OI2026-10-14: 225 OI2026-10-15: 179 OI2026-10-16: 179 OI2026-10-21: 179 OI2026-10-23: 179 OI Oct 02, 2026Oct 23, 2026

All saved dates are shown. Changes compare consecutive saved observations. Missing observations are not filled with zero.

W contract OI by effective market date, newest first
Market dateOpen interestChange vs prior saved day
Oct 23, 2026Viewing1790
Oct 21, 20261790
Oct 16, 20261790
Oct 15, 2026179-46
Oct 14, 20262250
Oct 13, 20262250
Oct 09, 20262250
Oct 08, 20262250
Oct 07, 20262250
Oct 06, 20262250
Oct 05, 20262250
Oct 02, 2026225No prior observation