OITracker Cboe delayed data

Contract OI history

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Nov 27, 2026 EXPIRATION

ON $55.00 Put

ON261127P00055000

Latest saved OI27Oct 23, 2026
Last change+25vs previous saved observation
Saved market days7Oct 09, 2026 onwards
Daily open interest Hover a point for its date and OI
ON $55.00 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. 27130 2026-10-09: 0 OI2026-10-13: 2 OI2026-10-14: 2 OI2026-10-15: 2 OI2026-10-16: 2 OI2026-10-21: 2 OI2026-10-23: 27 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, 2026Viewing27+25
Oct 21, 202620
Oct 16, 202620
Oct 15, 202620
Oct 14, 202620
Oct 13, 20262+2
Oct 09, 20260No prior observation