OITracker Cboe delayed data

Contract OI history

Back to BLDR

Sep 17, 2027 EXPIRATION

BLDR $50.00 Call

BLDR270917C00050000

Latest saved OI100Oct 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. 105520 2026-10-02: 100 OI2026-10-05: 100 OI2026-10-06: 100 OI2026-10-07: 100 OI2026-10-08: 100 OI2026-10-09: 105 OI2026-10-13: 105 OI2026-10-14: 105 OI2026-10-15: 105 OI2026-10-16: 100 OI2026-10-21: 100 OI2026-10-23: 100 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, 2026Viewing1000
Oct 21, 20261000
Oct 16, 2026100-5
Oct 15, 20261050
Oct 14, 20261050
Oct 13, 20261050
Oct 09, 2026105+5
Oct 08, 20261000
Oct 07, 20261000
Oct 06, 20261000
Oct 05, 20261000
Oct 02, 2026100No prior observation