OITracker Cboe delayed data

Contract OI history

Back to MA

Jan 21, 2028 EXPIRATION

MA $550.00 Put

MA280121P00550000

Latest saved OI296Oct 23, 2026
Last change0vs previous saved observation
Saved market days12Oct 02, 2026 onwards
Daily open interest Hover a point for its date and OI
MA $550.00 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. 2961480 2026-10-02: 28 OI2026-10-05: 28 OI2026-10-06: 28 OI2026-10-07: 28 OI2026-10-08: 28 OI2026-10-09: 28 OI2026-10-13: 29 OI2026-10-14: 29 OI2026-10-15: 28 OI2026-10-16: 28 OI2026-10-21: 296 OI2026-10-23: 296 OI Oct 02, 2026Oct 23, 2026

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

MA contract OI by effective market date, newest first
Market dateOpen interestChange vs prior saved day
Oct 23, 2026Viewing2960
Oct 21, 2026296+268
Oct 16, 2026280
Oct 15, 202628-1
Oct 14, 2026290
Oct 13, 202629+1
Oct 09, 2026280
Oct 08, 2026280
Oct 07, 2026280
Oct 06, 2026280
Oct 05, 2026280
Oct 02, 202628No prior observation