OITracker Cboe delayed data

Contract OI history

Back to MAIN

Mar 19, 2027 EXPIRATION

MAIN $49.70 Put

MAIN270319P00049700

Latest saved OI255Oct 23, 2026
Last change+5vs 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. 2551270 2026-10-02: 232 OI2026-10-05: 232 OI2026-10-06: 232 OI2026-10-07: 232 OI2026-10-08: 236 OI2026-10-13: 237 OI2026-10-14: 238 OI2026-10-15: 245 OI2026-10-16: 245 OI2026-10-21: 250 OI2026-10-23: 255 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, 2026255+5
Oct 21, 2026Viewing250+5
Oct 16, 20262450
Oct 15, 2026245+7
Oct 14, 2026238+1
Oct 13, 2026237+1
Oct 08, 2026236+4
Oct 07, 20262320
Oct 06, 20262320
Oct 05, 20262320
Oct 02, 2026232No prior observation