OITracker Cboe delayed data

Contract OI history

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Oct 30, 2026 EXPIRATION

CME $312.50 Put

CME261030P00312500

Latest saved OI600Oct 23, 2026
Last change+600vs previous saved observation
Saved market days2Oct 21, 2026 onwards
Daily open interest Hover a point for its date and OI
CME $312.50 put open interest history 2 saved observations from 2026-10-21 to 2026-10-23. Exact values and changes are listed in the table below. 6003000 2026-10-21: 0 OI2026-10-23: 600 OI Oct 21, 2026Oct 23, 2026

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

CME contract OI by effective market date, newest first
Market dateOpen interestChange vs prior saved day
Oct 23, 2026Viewing600+600
Oct 21, 20260No prior observation