OITracker Cboe delayed data

Contract OI history

Back to BLDR

Nov 20, 2026 EXPIRATION

BLDR $50.00 Call

BLDR261120C00050000

Latest saved OI529Oct 23, 2026
Last change0vs previous saved observation
Saved market days12Oct 02, 2026 onwards
Daily open interest Hover a point for its date and OI
BLDR $50.00 call open interest history 12 saved observations from 2026-10-02 to 2026-10-23. Exact values and changes are listed in the table below. 5292640 2026-10-02: 2 OI2026-10-05: 2 OI2026-10-06: 2 OI2026-10-07: 2 OI2026-10-08: 2 OI2026-10-09: 3 OI2026-10-13: 101 OI2026-10-14: 271 OI2026-10-15: 271 OI2026-10-16: 525 OI2026-10-21: 529 OI2026-10-23: 529 OI Oct 02, 2026Oct 23, 2026

All saved dates are shown. Changes compare consecutive saved observations. Missing observations are not filled with zero.

BLDR contract OI by effective market date, newest first
Market dateOpen interestChange vs prior saved day
Oct 23, 2026Viewing5290
Oct 21, 2026529+4
Oct 16, 2026525+254
Oct 15, 20262710
Oct 14, 2026271+170
Oct 13, 2026101+98
Oct 09, 20263+1
Oct 08, 202620
Oct 07, 202620
Oct 06, 202620
Oct 05, 202620
Oct 02, 20262No prior observation