OITracker Cboe delayed data

Contract OI history

Back to C

Nov 20, 2026 EXPIRATION

C $55.00 Put

C261120P00055000

Latest saved OI852Oct 23, 2026
Last change0vs previous saved observation
Saved market days12Oct 02, 2026 onwards
Daily open interest Hover a point for its date and OI
C $55.00 put open interest history 12 saved observations from 2026-10-02 to 2026-10-23. Exact values and changes are listed in the table below. 8524260 2026-10-02: 841 OI2026-10-05: 841 OI2026-10-06: 842 OI2026-10-07: 842 OI2026-10-08: 842 OI2026-10-09: 842 OI2026-10-13: 842 OI2026-10-14: 842 OI2026-10-15: 852 OI2026-10-16: 852 OI2026-10-21: 852 OI2026-10-23: 852 OI Oct 02, 2026Oct 23, 2026

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

C contract OI by effective market date, newest first
Market dateOpen interestChange vs prior saved day
Oct 23, 2026Viewing8520
Oct 21, 20268520
Oct 16, 20268520
Oct 15, 2026852+10
Oct 14, 20268420
Oct 13, 20268420
Oct 09, 20268420
Oct 08, 20268420
Oct 07, 20268420
Oct 06, 2026842+1
Oct 05, 20268410
Oct 02, 2026841No prior observation