OITracker Cboe delayed data

Contract OI history

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Dec 18, 2026 EXPIRATION

MAIN $59.40 Put

MAIN261218P00059400

Latest saved OI205Oct 23, 2026
Last change0vs previous saved observation
Saved market days11Oct 02, 2026 onwards
Daily open interest Hover a point for its date and OI
MAIN $59.40 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. 2061030 2026-10-02: 205 OI2026-10-05: 205 OI2026-10-06: 205 OI2026-10-07: 205 OI2026-10-08: 206 OI2026-10-13: 206 OI2026-10-14: 206 OI2026-10-15: 206 OI2026-10-16: 201 OI2026-10-21: 205 OI2026-10-23: 205 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, 2026Viewing2050
Oct 21, 2026205+4
Oct 16, 2026201-5
Oct 15, 20262060
Oct 14, 20262060
Oct 13, 20262060
Oct 08, 2026206+1
Oct 07, 20262050
Oct 06, 20262050
Oct 05, 20262050
Oct 02, 2026205No prior observation