OITracker Cboe delayed data

Contract OI history

Back to ON

Jan 15, 2027 EXPIRATION

ON $40.00 Put

ON270115P00040000

Latest saved OI1,105Oct 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 $40.00 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. 1,1055520 2026-10-09: 1,104 OI2026-10-13: 1,104 OI2026-10-14: 1,104 OI2026-10-15: 1,104 OI2026-10-16: 1,104 OI2026-10-21: 1,105 OI2026-10-23: 1,105 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, 2026Viewing1,1050
Oct 21, 20261,105+1
Oct 16, 20261,1040
Oct 15, 20261,1040
Oct 14, 20261,1040
Oct 13, 20261,1040
Oct 09, 20261,104No prior observation