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Contract OI history

Back to BRK.B

Oct 30, 2026 EXPIRATION

BRK.B $485.00 Put

BRKB261030P00485000

Latest saved OI125Oct 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
BRK.B $485.00 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. 167830 2026-10-02: 152 OI2026-10-05: 159 OI2026-10-06: 165 OI2026-10-07: 167 OI2026-10-08: 167 OI2026-10-09: 144 OI2026-10-13: 135 OI2026-10-14: 135 OI2026-10-15: 135 OI2026-10-16: 130 OI2026-10-21: 130 OI2026-10-23: 125 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, 2026Viewing125-5
Oct 21, 20261300
Oct 16, 2026130-5
Oct 15, 20261350
Oct 14, 20261350
Oct 13, 2026135-9
Oct 09, 2026144-23
Oct 08, 20261670
Oct 07, 2026167+2
Oct 06, 2026165+6
Oct 05, 2026159+7
Oct 02, 2026152No prior observation