OITracker Cboe delayed data

Contract OI history

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Jan 15, 2027 EXPIRATION

FOUR $42.50 Put

FOUR270115P00042500

Latest saved OI1,164Oct 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
FOUR $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. 1,1655820 2026-10-02: 1,116 OI2026-10-05: 1,116 OI2026-10-06: 1,116 OI2026-10-07: 1,116 OI2026-10-08: 1,116 OI2026-10-09: 1,116 OI2026-10-13: 1,116 OI2026-10-14: 1,116 OI2026-10-15: 1,116 OI2026-10-16: 1,116 OI2026-10-21: 1,165 OI2026-10-23: 1,164 OI Oct 02, 2026Oct 23, 2026

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

FOUR contract OI by effective market date, newest first
Market dateOpen interestChange vs prior saved day
Oct 23, 2026Viewing1,164-1
Oct 21, 20261,165+49
Oct 16, 20261,1160
Oct 15, 20261,1160
Oct 14, 20261,1160
Oct 13, 20261,1160
Oct 09, 20261,1160
Oct 08, 20261,1160
Oct 07, 20261,1160
Oct 06, 20261,1160
Oct 05, 20261,1160
Oct 02, 20261,116No prior observation