OITracker Cboe delayed data

Contract OI history

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Oct 30, 2026 EXPIRATION

M $20.50 Call

M261030C00020500

Latest saved OI14Oct 23, 2026
Last change0vs previous saved observation
Saved market days12Oct 02, 2026 onwards
Daily open interest Hover a point for its date and OI
M $20.50 call open interest history 12 saved observations from 2026-10-02 to 2026-10-23. Exact values and changes are listed in the table below. 1470 2026-10-02: 2 OI2026-10-05: 2 OI2026-10-06: 13 OI2026-10-07: 12 OI2026-10-08: 12 OI2026-10-09: 12 OI2026-10-13: 12 OI2026-10-14: 12 OI2026-10-15: 12 OI2026-10-16: 12 OI2026-10-21: 14 OI2026-10-23: 14 OI Oct 02, 2026Oct 23, 2026

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

M contract OI by effective market date, newest first
Market dateOpen interestChange vs prior saved day
Oct 23, 2026Viewing140
Oct 21, 202614+2
Oct 16, 2026120
Oct 15, 2026120
Oct 14, 2026120
Oct 13, 2026120
Oct 09, 2026120
Oct 08, 2026120
Oct 07, 202612-1
Oct 06, 202613+11
Oct 05, 202620
Oct 02, 20262No prior observation