OITracker Cboe delayed data

Contract OI history

Back to B

Dec 15, 2028 EXPIRATION

B $28.00 Put

B281215P00028000

Latest saved OI409Oct 23, 2026
Last change0vs previous saved observation
Saved market days12Oct 02, 2026 onwards
Daily open interest Hover a point for its date and OI
B $28.00 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. 4102050 2026-10-02: 89 OI2026-10-05: 89 OI2026-10-06: 89 OI2026-10-07: 89 OI2026-10-08: 230 OI2026-10-09: 230 OI2026-10-13: 230 OI2026-10-14: 230 OI2026-10-15: 410 OI2026-10-16: 410 OI2026-10-21: 409 OI2026-10-23: 409 OI Oct 02, 2026Oct 23, 2026

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

B contract OI by effective market date, newest first
Market dateOpen interestChange vs prior saved day
Oct 23, 2026Viewing4090
Oct 21, 2026409-1
Oct 16, 20264100
Oct 15, 2026410+180
Oct 14, 20262300
Oct 13, 20262300
Oct 09, 20262300
Oct 08, 2026230+141
Oct 07, 2026890
Oct 06, 2026890
Oct 05, 2026890
Oct 02, 202689No prior observation