OITracker Cboe delayed data

Contract OI history

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Mar 19, 2027 EXPIRATION

MA $520.00 Put

MA270319P00520000

Latest saved OI490Oct 23, 2026
Last change+5vs previous saved observation
Saved market days12Oct 02, 2026 onwards
Daily open interest Hover a point for its date and OI
MA $520.00 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. 4902450 2026-10-02: 420 OI2026-10-05: 420 OI2026-10-06: 463 OI2026-10-07: 464 OI2026-10-08: 464 OI2026-10-09: 483 OI2026-10-13: 484 OI2026-10-14: 484 OI2026-10-15: 485 OI2026-10-16: 485 OI2026-10-21: 485 OI2026-10-23: 490 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, 2026Viewing490+5
Oct 21, 20264850
Oct 16, 20264850
Oct 15, 2026485+1
Oct 14, 20264840
Oct 13, 2026484+1
Oct 09, 2026483+19
Oct 08, 20264640
Oct 07, 2026464+1
Oct 06, 2026463+43
Oct 05, 20264200
Oct 02, 2026420No prior observation