OITracker Cboe delayed data

Contract OI history

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Dec 18, 2026 EXPIRATION

MAIN $54.40 Put

MAIN261218P00054400

Latest saved OI458Oct 23, 2026
Last change-1vs previous saved observation
Saved market days11Oct 02, 2026 onwards
Daily open interest Hover a point for its date and OI
MAIN $54.40 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. 4602300 2026-10-02: 455 OI2026-10-05: 455 OI2026-10-06: 456 OI2026-10-07: 456 OI2026-10-08: 460 OI2026-10-13: 456 OI2026-10-14: 455 OI2026-10-15: 455 OI2026-10-16: 456 OI2026-10-21: 459 OI2026-10-23: 458 OI Oct 02, 2026Oct 23, 2026

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

MAIN contract OI by effective market date, newest first
Market dateOpen interestChange vs prior saved day
Oct 23, 2026Viewing458-1
Oct 21, 2026459+3
Oct 16, 2026456+1
Oct 15, 20264550
Oct 14, 2026455-1
Oct 13, 2026456-4
Oct 08, 2026460+4
Oct 07, 20264560
Oct 06, 2026456+1
Oct 05, 20264550
Oct 02, 2026455No prior observation