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Contract OI history

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Dec 18, 2026 EXPIRATION

BLDR $40.00 Put

BLDR261218P00040000

Latest saved OI233Oct 23, 2026
Last change-1vs previous saved observation
Saved market days12Oct 02, 2026 onwards
Daily open interest Hover a point for its date and OI
BLDR $40.00 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. 2381190 2026-10-02: 59 OI2026-10-05: 187 OI2026-10-06: 187 OI2026-10-07: 215 OI2026-10-08: 216 OI2026-10-09: 216 OI2026-10-13: 229 OI2026-10-14: 232 OI2026-10-15: 238 OI2026-10-16: 234 OI2026-10-21: 234 OI2026-10-23: 233 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, 2026Viewing233-1
Oct 21, 20262340
Oct 16, 2026234-4
Oct 15, 2026238+6
Oct 14, 2026232+3
Oct 13, 2026229+13
Oct 09, 20262160
Oct 08, 2026216+1
Oct 07, 2026215+28
Oct 06, 20261870
Oct 05, 2026187+128
Oct 02, 202659No prior observation