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Contract OI history

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Nov 20, 2026 EXPIRATION

BLDR $50.00 Put

BLDR261120P00050000

Latest saved OI1,424Oct 23, 2026
Last change+206vs previous saved observation
Saved market days12Oct 02, 2026 onwards
Daily open interest Hover a point for its date and OI
BLDR $50.00 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. 1,4247120 2026-10-02: 448 OI2026-10-05: 460 OI2026-10-06: 460 OI2026-10-07: 462 OI2026-10-08: 474 OI2026-10-09: 484 OI2026-10-13: 573 OI2026-10-14: 600 OI2026-10-15: 717 OI2026-10-16: 717 OI2026-10-21: 1,218 OI2026-10-23: 1,424 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, 2026Viewing1,424+206
Oct 21, 20261,218+501
Oct 16, 20267170
Oct 15, 2026717+117
Oct 14, 2026600+27
Oct 13, 2026573+89
Oct 09, 2026484+10
Oct 08, 2026474+12
Oct 07, 2026462+2
Oct 06, 20264600
Oct 05, 2026460+12
Oct 02, 2026448No prior observation