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Contract OI history

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Dec 18, 2026 EXPIRATION

BLDR $50.00 Put

BLDR261218P00050000

Latest saved OI558Oct 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 $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. 5592790 2026-10-02: 505 OI2026-10-05: 515 OI2026-10-06: 515 OI2026-10-07: 524 OI2026-10-08: 544 OI2026-10-09: 544 OI2026-10-13: 551 OI2026-10-14: 551 OI2026-10-15: 551 OI2026-10-16: 550 OI2026-10-21: 559 OI2026-10-23: 558 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, 2026Viewing558-1
Oct 21, 2026559+9
Oct 16, 2026550-1
Oct 15, 20265510
Oct 14, 20265510
Oct 13, 2026551+7
Oct 09, 20265440
Oct 08, 2026544+20
Oct 07, 2026524+9
Oct 06, 20265150
Oct 05, 2026515+10
Oct 02, 2026505No prior observation