OITracker Cboe delayed data

Contract OI history

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Nov 20, 2026 EXPIRATION

MAIN $49.70 Put

MAIN261120P00049700

Latest saved OI2,070Oct 23, 2026
Last change+11vs previous saved observation
Saved market days11Oct 02, 2026 onwards
Daily open interest Hover a point for its date and OI
MAIN $49.70 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. 2,0701,0350 2026-10-02: 114 OI2026-10-05: 129 OI2026-10-06: 129 OI2026-10-07: 129 OI2026-10-08: 177 OI2026-10-13: 235 OI2026-10-14: 238 OI2026-10-15: 265 OI2026-10-16: 261 OI2026-10-21: 2,059 OI2026-10-23: 2,070 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, 20262,070+11
Oct 21, 2026Viewing2,059+1,798
Oct 16, 2026261-4
Oct 15, 2026265+27
Oct 14, 2026238+3
Oct 13, 2026235+58
Oct 08, 2026177+48
Oct 07, 20261290
Oct 06, 20261290
Oct 05, 2026129+15
Oct 02, 2026114No prior observation