OITracker Cboe delayed data

Contract OI history

Back to C

Dec 18, 2026 EXPIRATION

C $55.00 Put

C261218P00055000

Latest saved OI7,870Oct 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. 7,8703,9350 2026-10-02: 7,870 OI2026-10-05: 7,870 OI2026-10-06: 7,870 OI2026-10-07: 7,870 OI2026-10-08: 7,870 OI2026-10-09: 7,870 OI2026-10-13: 7,870 OI2026-10-14: 7,870 OI2026-10-15: 7,870 OI2026-10-16: 7,870 OI2026-10-21: 7,870 OI2026-10-23: 7,870 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, 2026Viewing7,8700
Oct 21, 20267,8700
Oct 16, 20267,8700
Oct 15, 20267,8700
Oct 14, 20267,8700
Oct 13, 20267,8700
Oct 09, 20267,8700
Oct 08, 20267,8700
Oct 07, 20267,8700
Oct 06, 20267,8700
Oct 05, 20267,8700
Oct 02, 20267,870No prior observation