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Contract OI history

Back to BRK.B

Sep 17, 2027 EXPIRATION

BRK.B $490.00 Put

BRKB270917P00490000

Latest saved OI816Oct 23, 2026
Last change+599vs previous saved observation
Saved market days12Oct 02, 2026 onwards
Daily open interest Hover a point for its date and OI
BRK.B $490.00 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. 8164080 2026-10-02: 141 OI2026-10-05: 142 OI2026-10-06: 147 OI2026-10-07: 147 OI2026-10-08: 147 OI2026-10-09: 146 OI2026-10-13: 147 OI2026-10-14: 147 OI2026-10-15: 152 OI2026-10-16: 156 OI2026-10-21: 217 OI2026-10-23: 816 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, 2026Viewing816+599
Oct 21, 2026217+61
Oct 16, 2026156+4
Oct 15, 2026152+5
Oct 14, 20261470
Oct 13, 2026147+1
Oct 09, 2026146-1
Oct 08, 20261470
Oct 07, 20261470
Oct 06, 2026147+5
Oct 05, 2026142+1
Oct 02, 2026141No prior observation