OITracker Cboe delayed data

Contract OI history

Back to B

Dec 18, 2026 EXPIRATION

B $34.00 Put

B261218P00034000

Latest saved OI590Oct 23, 2026
Last change+182vs previous saved observation
Saved market days12Oct 02, 2026 onwards
Daily open interest Hover a point for its date and OI
B $34.00 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. 5902950 2026-10-02: 121 OI2026-10-05: 202 OI2026-10-06: 202 OI2026-10-07: 203 OI2026-10-08: 203 OI2026-10-09: 203 OI2026-10-13: 211 OI2026-10-14: 282 OI2026-10-15: 318 OI2026-10-16: 318 OI2026-10-21: 408 OI2026-10-23: 590 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, 2026Viewing590+182
Oct 21, 2026408+90
Oct 16, 20263180
Oct 15, 2026318+36
Oct 14, 2026282+71
Oct 13, 2026211+8
Oct 09, 20262030
Oct 08, 20262030
Oct 07, 2026203+1
Oct 06, 20262020
Oct 05, 2026202+81
Oct 02, 2026121No prior observation