OITracker Cboe delayed data

Contract OI history

Back to B

Oct 30, 2026 EXPIRATION

B $41.00 Put

B261030P00041000

Latest saved OI50Oct 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. 50250 2026-10-02: 21 OI2026-10-05: 40 OI2026-10-06: 40 OI2026-10-07: 40 OI2026-10-08: 42 OI2026-10-09: 42 OI2026-10-13: 42 OI2026-10-14: 43 OI2026-10-15: 41 OI2026-10-16: 41 OI2026-10-21: 50 OI2026-10-23: 50 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, 2026Viewing500
Oct 21, 202650+9
Oct 16, 2026410
Oct 15, 202641-2
Oct 14, 202643+1
Oct 13, 2026420
Oct 09, 2026420
Oct 08, 202642+2
Oct 07, 2026400
Oct 06, 2026400
Oct 05, 202640+19
Oct 02, 202621No prior observation