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Contract OI history

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May 21, 2027 EXPIRATION

BLDP $4.00 Put

BLDP270521P00004000

Latest saved OI45Oct 23, 2026
Last change0vs previous saved observation
Saved market days7Oct 08, 2026 onwards
Daily open interest Hover a point for its date and OI
BLDP $4.00 put open interest history 7 saved observations from 2026-10-08 to 2026-10-23. Exact values and changes are listed in the table below. 45220 2026-10-08: 38 OI2026-10-09: 38 OI2026-10-13: 38 OI2026-10-14: 38 OI2026-10-16: 45 OI2026-10-20: 45 OI2026-10-23: 45 OI Oct 08, 2026Oct 23, 2026

All saved dates are shown. Changes compare consecutive saved observations. Missing observations are not filled with zero.

BLDP contract OI by effective market date, newest first
Market dateOpen interestChange vs prior saved day
Oct 23, 2026Viewing450
Oct 20, 2026450
Oct 16, 202645+7
Oct 14, 2026380
Oct 13, 2026380
Oct 09, 2026380
Oct 08, 202638No prior observation