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Contract OI history

Back to BRK.B

Sep 17, 2027 EXPIRATION

BRK.B $520.00 Put

BRKB270917P00520000

Latest saved OI589Oct 23, 2026
Last change+2vs previous saved observation
Saved market days12Oct 02, 2026 onwards
Daily open interest Hover a point for its date and OI
BRK.B $520.00 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. 5902950 2026-10-02: 60 OI2026-10-05: 80 OI2026-10-06: 568 OI2026-10-07: 568 OI2026-10-08: 568 OI2026-10-09: 568 OI2026-10-13: 583 OI2026-10-14: 583 OI2026-10-15: 585 OI2026-10-16: 590 OI2026-10-21: 587 OI2026-10-23: 589 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, 2026Viewing589+2
Oct 21, 2026587-3
Oct 16, 2026590+5
Oct 15, 2026585+2
Oct 14, 20265830
Oct 13, 2026583+15
Oct 09, 20265680
Oct 08, 20265680
Oct 07, 20265680
Oct 06, 2026568+488
Oct 05, 202680+20
Oct 02, 202660No prior observation