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Contract OI history

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Dec 18, 2026 EXPIRATION

BETR $22.50 Put

BETR261218P00022500

Latest saved OI15Oct 23, 2026
Last change-1vs previous saved observation
Saved market days7Oct 08, 2026 onwards
Daily open interest Hover a point for its date and OI
BETR $22.50 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. 22110 2026-10-08: 20 OI2026-10-09: 20 OI2026-10-13: 22 OI2026-10-14: 21 OI2026-10-16: 18 OI2026-10-21: 16 OI2026-10-23: 15 OI Oct 08, 2026Oct 23, 2026

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

BETR contract OI by effective market date, newest first
Market dateOpen interestChange vs prior saved day
Oct 23, 2026Viewing15-1
Oct 21, 202616-2
Oct 16, 202618-3
Oct 14, 202621-1
Oct 13, 202622+2
Oct 09, 2026200
Oct 08, 202620No prior observation