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Contract OI history

Back to BRK.B

Oct 23, 2026 EXPIRATION

BRK.B $490.00 Put

BRKB261023P00490000

Latest saved OI299Oct 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 $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. 3011500 2026-10-02: 253 OI2026-10-05: 256 OI2026-10-06: 275 OI2026-10-07: 280 OI2026-10-08: 280 OI2026-10-09: 292 OI2026-10-13: 296 OI2026-10-14: 296 OI2026-10-15: 296 OI2026-10-16: 296 OI2026-10-21: 301 OI2026-10-23: 299 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, 2026Viewing299-2
Oct 21, 2026301+5
Oct 16, 20262960
Oct 15, 20262960
Oct 14, 20262960
Oct 13, 2026296+4
Oct 09, 2026292+12
Oct 08, 20262800
Oct 07, 2026280+5
Oct 06, 2026275+19
Oct 05, 2026256+3
Oct 02, 2026253No prior observation