OITracker Cboe delayed data

Contract OI history

Back to CERS

Dec 18, 2026 EXPIRATION

CERS $3.00 Put

CERS261218P00003000

Latest saved OI153Oct 23, 2026
Last change0vs previous saved observation
Saved market days6Oct 09, 2026 onwards
Daily open interest Hover a point for its date and OI
CERS $3.00 put open interest history 6 saved observations from 2026-10-09 to 2026-10-23. Exact values and changes are listed in the table below. 154770 2026-10-09: 154 OI2026-10-13: 154 OI2026-10-14: 154 OI2026-10-16: 153 OI2026-10-20: 153 OI2026-10-23: 153 OI Oct 09, 2026Oct 23, 2026

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

CERS contract OI by effective market date, newest first
Market dateOpen interestChange vs prior saved day
Oct 23, 2026Viewing1530
Oct 20, 20261530
Oct 16, 2026153-1
Oct 14, 20261540
Oct 13, 20261540
Oct 09, 2026154No prior observation