OITracker Cboe delayed data

Contract OI history

Back to B

Oct 23, 2026 EXPIRATION

B $38.00 Put

B261023P00038000

Latest saved OI347Oct 23, 2026
Last change-7vs previous saved observation
Saved market days12Oct 02, 2026 onwards
Daily open interest Hover a point for its date and OI
B $38.00 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. 4582290 2026-10-02: 404 OI2026-10-05: 412 OI2026-10-06: 412 OI2026-10-07: 414 OI2026-10-08: 422 OI2026-10-09: 425 OI2026-10-13: 414 OI2026-10-14: 428 OI2026-10-15: 451 OI2026-10-16: 458 OI2026-10-21: 354 OI2026-10-23: 347 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, 2026Viewing347-7
Oct 21, 2026354-104
Oct 16, 2026458+7
Oct 15, 2026451+23
Oct 14, 2026428+14
Oct 13, 2026414-11
Oct 09, 2026425+3
Oct 08, 2026422+8
Oct 07, 2026414+2
Oct 06, 20264120
Oct 05, 2026412+8
Oct 02, 2026404No prior observation