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Contract OI history

Back to BRK.B

Mar 19, 2027 EXPIRATION

BRK.B $485.00 Put

BRKB270319P00485000

Latest saved OI422Oct 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. 4222110 2026-10-02: 317 OI2026-10-05: 318 OI2026-10-06: 332 OI2026-10-07: 344 OI2026-10-08: 344 OI2026-10-09: 379 OI2026-10-13: 386 OI2026-10-14: 386 OI2026-10-15: 386 OI2026-10-16: 386 OI2026-10-21: 417 OI2026-10-23: 422 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, 2026Viewing422+5
Oct 21, 2026417+31
Oct 16, 20263860
Oct 15, 20263860
Oct 14, 20263860
Oct 13, 2026386+7
Oct 09, 2026379+35
Oct 08, 20263440
Oct 07, 2026344+12
Oct 06, 2026332+14
Oct 05, 2026318+1
Oct 02, 2026317No prior observation