OITracker Cboe delayed data

Contract OI history

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Sep 17, 2027 EXPIRATION

B $50.00 Call

B270917C00050000

Latest saved OI286Oct 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 $50.00 call open interest history 12 saved observations from 2026-10-02 to 2026-10-23. Exact values and changes are listed in the table below. 2861430 2026-10-02: 263 OI2026-10-05: 262 OI2026-10-06: 262 OI2026-10-07: 267 OI2026-10-08: 270 OI2026-10-09: 270 OI2026-10-13: 282 OI2026-10-14: 282 OI2026-10-15: 281 OI2026-10-16: 283 OI2026-10-21: 286 OI2026-10-23: 286 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, 2026Viewing2860
Oct 21, 2026286+3
Oct 16, 2026283+2
Oct 15, 2026281-1
Oct 14, 20262820
Oct 13, 2026282+12
Oct 09, 20262700
Oct 08, 2026270+3
Oct 07, 2026267+5
Oct 06, 20262620
Oct 05, 2026262-1
Oct 02, 2026263No prior observation