OITracker Cboe delayed data

Contract OI history

Back to B

Mar 19, 2027 EXPIRATION

B $30.00 Put

B270319P00030000

Latest saved OI3,476Oct 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 $30.00 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. 3,4761,7380 2026-10-02: 3,463 OI2026-10-05: 3,469 OI2026-10-06: 3,469 OI2026-10-07: 3,469 OI2026-10-08: 3,469 OI2026-10-09: 3,469 OI2026-10-13: 3,469 OI2026-10-14: 3,469 OI2026-10-15: 3,475 OI2026-10-16: 3,475 OI2026-10-21: 3,476 OI2026-10-23: 3,476 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, 2026Viewing3,4760
Oct 21, 20263,476+1
Oct 16, 20263,4750
Oct 15, 20263,475+6
Oct 14, 20263,4690
Oct 13, 20263,4690
Oct 09, 20263,4690
Oct 08, 20263,4690
Oct 07, 20263,4690
Oct 06, 20263,4690
Oct 05, 20263,469+6
Oct 02, 20263,463No prior observation