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Contract OI history

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Dec 18, 2026 EXPIRATION

BLDR $55.00 Put

BLDR261218P00055000

Latest saved OI93Oct 23, 2026
Last change+5vs previous saved observation
Saved market days12Oct 02, 2026 onwards
Daily open interest Hover a point for its date and OI
BLDR $55.00 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. 179890 2026-10-02: 172 OI2026-10-05: 178 OI2026-10-06: 178 OI2026-10-07: 179 OI2026-10-08: 139 OI2026-10-09: 166 OI2026-10-13: 92 OI2026-10-14: 92 OI2026-10-15: 91 OI2026-10-16: 91 OI2026-10-21: 88 OI2026-10-23: 93 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, 2026Viewing93+5
Oct 21, 202688-3
Oct 16, 2026910
Oct 15, 202691-1
Oct 14, 2026920
Oct 13, 202692-74
Oct 09, 2026166+27
Oct 08, 2026139-40
Oct 07, 2026179+1
Oct 06, 20261780
Oct 05, 2026178+6
Oct 02, 2026172No prior observation