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Contract OI history

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Nov 20, 2026 EXPIRATION

BLDR $40.00 Put

BLDR261120P00040000

Latest saved OI298Oct 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 $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. 3181590 2026-10-02: 77 OI2026-10-05: 77 OI2026-10-06: 77 OI2026-10-07: 77 OI2026-10-08: 79 OI2026-10-09: 316 OI2026-10-13: 317 OI2026-10-14: 317 OI2026-10-15: 317 OI2026-10-16: 318 OI2026-10-21: 298 OI2026-10-23: 298 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, 2026Viewing2980
Oct 21, 2026298-20
Oct 16, 2026318+1
Oct 15, 20263170
Oct 14, 20263170
Oct 13, 2026317+1
Oct 09, 2026316+237
Oct 08, 202679+2
Oct 07, 2026770
Oct 06, 2026770
Oct 05, 2026770
Oct 02, 202677No prior observation