OITracker Cboe delayed data

Contract OI history

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Jan 15, 2027 EXPIRATION

O $42.50 Put

O270115P00042500

Latest saved OI201Oct 23, 2026
Last change0vs previous saved observation
Saved market days12Oct 02, 2026 onwards
Daily open interest Hover a point for its date and OI
O $42.50 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. 2011000 2026-10-02: 186 OI2026-10-05: 197 OI2026-10-06: 198 OI2026-10-07: 198 OI2026-10-08: 198 OI2026-10-09: 198 OI2026-10-13: 198 OI2026-10-14: 198 OI2026-10-15: 198 OI2026-10-16: 198 OI2026-10-21: 201 OI2026-10-23: 201 OI Oct 02, 2026Oct 23, 2026

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

O contract OI by effective market date, newest first
Market dateOpen interestChange vs prior saved day
Oct 23, 2026Viewing2010
Oct 21, 2026201+3
Oct 16, 20261980
Oct 15, 20261980
Oct 14, 20261980
Oct 13, 20261980
Oct 09, 20261980
Oct 08, 20261980
Oct 07, 20261980
Oct 06, 2026198+1
Oct 05, 2026197+11
Oct 02, 2026186No prior observation