OITracker Cboe delayed data

Contract OI history

Back to B

Jan 15, 2027 EXPIRATION

B $41.00 Put

B270115P00041000

Latest saved OI517Oct 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 $41.00 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. 5172580 2026-10-02: 507 OI2026-10-05: 508 OI2026-10-06: 508 OI2026-10-07: 508 OI2026-10-08: 510 OI2026-10-09: 510 OI2026-10-13: 515 OI2026-10-14: 515 OI2026-10-15: 515 OI2026-10-16: 515 OI2026-10-21: 517 OI2026-10-23: 517 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, 2026Viewing5170
Oct 21, 2026517+2
Oct 16, 20265150
Oct 15, 20265150
Oct 14, 20265150
Oct 13, 2026515+5
Oct 09, 20265100
Oct 08, 2026510+2
Oct 07, 20265080
Oct 06, 20265080
Oct 05, 2026508+1
Oct 02, 2026507No prior observation