OITracker Cboe delayed data

Contract OI history

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Jan 15, 2027 EXPIRATION

CB $310.00 Put

CB270115P00310000

Latest saved OI227Oct 23, 2026
Last change-10vs previous saved observation
Saved market days12Oct 02, 2026 onwards
Daily open interest Hover a point for its date and OI
CB $310.00 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. 2421210 2026-10-02: 239 OI2026-10-05: 239 OI2026-10-06: 242 OI2026-10-07: 242 OI2026-10-08: 242 OI2026-10-09: 242 OI2026-10-13: 242 OI2026-10-14: 242 OI2026-10-15: 242 OI2026-10-16: 239 OI2026-10-21: 237 OI2026-10-23: 227 OI Oct 02, 2026Oct 23, 2026

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

CB contract OI by effective market date, newest first
Market dateOpen interestChange vs prior saved day
Oct 23, 2026Viewing227-10
Oct 21, 2026237-2
Oct 16, 2026239-3
Oct 15, 20262420
Oct 14, 20262420
Oct 13, 20262420
Oct 09, 20262420
Oct 08, 20262420
Oct 07, 20262420
Oct 06, 2026242+3
Oct 05, 20262390
Oct 02, 2026239No prior observation