OITracker Cboe delayed data

Contract OI history

Back to ON

Dec 18, 2026 EXPIRATION

ON $35.00 Put

ON261218P00035000

Latest saved OI102Oct 23, 2026
Last change0vs previous saved observation
Saved market days7Oct 09, 2026 onwards
Daily open interest Hover a point for its date and OI
ON $35.00 put open interest history 7 saved observations from 2026-10-09 to 2026-10-23. Exact values and changes are listed in the table below. 102510 2026-10-09: 89 OI2026-10-13: 90 OI2026-10-14: 90 OI2026-10-15: 90 OI2026-10-16: 91 OI2026-10-21: 102 OI2026-10-23: 102 OI Oct 09, 2026Oct 23, 2026

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

ON contract OI by effective market date, newest first
Market dateOpen interestChange vs prior saved day
Oct 23, 2026Viewing1020
Oct 21, 2026102+11
Oct 16, 202691+1
Oct 15, 2026900
Oct 14, 2026900
Oct 13, 202690+1
Oct 09, 202689No prior observation