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Contract OI history

Back to BRK.B

Oct 23, 2026 EXPIRATION

BRK.B $505.00 Put

BRKB261023P00505000

Latest saved OI247Oct 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
BRK.B $505.00 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. 2481240 2026-10-02: 84 OI2026-10-05: 84 OI2026-10-06: 85 OI2026-10-07: 86 OI2026-10-08: 86 OI2026-10-09: 105 OI2026-10-13: 209 OI2026-10-14: 209 OI2026-10-15: 246 OI2026-10-16: 245 OI2026-10-21: 248 OI2026-10-23: 247 OI Oct 02, 2026Oct 23, 2026

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

BRK.B contract OI by effective market date, newest first
Market dateOpen interestChange vs prior saved day
Oct 23, 2026Viewing247-1
Oct 21, 2026248+3
Oct 16, 2026245-1
Oct 15, 2026246+37
Oct 14, 20262090
Oct 13, 2026209+104
Oct 09, 2026105+19
Oct 08, 2026860
Oct 07, 202686+1
Oct 06, 202685+1
Oct 05, 2026840
Oct 02, 202684No prior observation