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Contract OI history

Back to BRK.B

Nov 20, 2026 EXPIRATION

BRK.B $410.00 Put

BRKB261120P00410000

Latest saved OI263Oct 23, 2026
Last change0vs previous saved observation
Saved market days12Oct 02, 2026 onwards
Daily open interest Hover a point for its date and OI
BRK.B $410.00 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. 2631310 2026-10-02: 225 OI2026-10-05: 245 OI2026-10-06: 249 OI2026-10-07: 260 OI2026-10-08: 260 OI2026-10-09: 253 OI2026-10-13: 254 OI2026-10-14: 254 OI2026-10-15: 254 OI2026-10-16: 254 OI2026-10-21: 263 OI2026-10-23: 263 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, 2026Viewing2630
Oct 21, 2026263+9
Oct 16, 20262540
Oct 15, 20262540
Oct 14, 20262540
Oct 13, 2026254+1
Oct 09, 2026253-7
Oct 08, 20262600
Oct 07, 2026260+11
Oct 06, 2026249+4
Oct 05, 2026245+20
Oct 02, 2026225No prior observation