OITracker Cboe delayed data

Contract OI history

Back to CTO

Feb 19, 2027 EXPIRATION

CTO $20.00 Put

CTO270219P00020000

Latest saved OI23Oct 23, 2026
Last change+12vs previous saved observation
Saved market days11Oct 02, 2026 onwards
Daily open interest Hover a point for its date and OI
CTO $20.00 put open interest history 11 saved observations from 2026-10-02 to 2026-10-23. Exact values and changes are listed in the table below. 23110 2026-10-02: 0 OI2026-10-05: 0 OI2026-10-06: 0 OI2026-10-07: 5 OI2026-10-08: 5 OI2026-10-09: 5 OI2026-10-13: 11 OI2026-10-14: 11 OI2026-10-16: 11 OI2026-10-20: 11 OI2026-10-23: 23 OI Oct 02, 2026Oct 23, 2026

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

CTO contract OI by effective market date, newest first
Market dateOpen interestChange vs prior saved day
Oct 23, 2026Viewing23+12
Oct 20, 2026110
Oct 16, 2026110
Oct 14, 2026110
Oct 13, 202611+6
Oct 09, 202650
Oct 08, 202650
Oct 07, 20265+5
Oct 06, 202600
Oct 05, 202600
Oct 02, 20260No prior observation