OITracker Cboe delayed data

Contract OI history

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Mar 19, 2027 EXPIRATION

W $97.50 Put

W270319P00097500

Latest saved OI211Oct 23, 2026
Last change+1vs previous saved observation
Saved market days12Oct 02, 2026 onwards
Daily open interest Hover a point for its date and OI
W $97.50 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. 2111050 2026-10-02: 200 OI2026-10-05: 200 OI2026-10-06: 200 OI2026-10-07: 200 OI2026-10-08: 200 OI2026-10-09: 200 OI2026-10-13: 200 OI2026-10-14: 200 OI2026-10-15: 200 OI2026-10-16: 204 OI2026-10-21: 210 OI2026-10-23: 211 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, 2026211+1
Oct 21, 2026Viewing210+6
Oct 16, 2026204+4
Oct 15, 20262000
Oct 14, 20262000
Oct 13, 20262000
Oct 09, 20262000
Oct 08, 20262000
Oct 07, 20262000
Oct 06, 20262000
Oct 05, 20262000
Oct 02, 2026200No prior observation