OITracker Cboe delayed data

Contract OI history

Back to ON

Sep 17, 2027 EXPIRATION

ON $50.00 Put

ON270917P00050000

Latest saved OI695Oct 23, 2026
Last change+15vs previous saved observation
Saved market days7Oct 09, 2026 onwards
Daily open interest Hover a point for its date and OI
ON $50.00 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. 6953470 2026-10-09: 509 OI2026-10-13: 509 OI2026-10-14: 509 OI2026-10-15: 509 OI2026-10-16: 680 OI2026-10-21: 680 OI2026-10-23: 695 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, 2026Viewing695+15
Oct 21, 20266800
Oct 16, 2026680+171
Oct 15, 20265090
Oct 14, 20265090
Oct 13, 20265090
Oct 09, 2026509No prior observation