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Contract OI history

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Feb 19, 2027 EXPIRATION

GRBK $80.00 Put

GRBK270219P00080000

Latest saved OI2Oct 21, 2026
Last change0vs previous saved observation
Saved market days10Oct 02, 2026 onwards
Daily open interest Hover a point for its date and OI
GRBK $80.00 put open interest history 10 saved observations from 2026-10-02 to 2026-10-21. Exact values and changes are listed in the table below. 1260 2026-10-02: 12 OI2026-10-05: 12 OI2026-10-06: 12 OI2026-10-07: 12 OI2026-10-08: 12 OI2026-10-09: 12 OI2026-10-13: 12 OI2026-10-14: 12 OI2026-10-16: 2 OI2026-10-21: 2 OI Oct 02, 2026Oct 21, 2026

All saved dates are shown. Changes compare consecutive saved observations. Missing observations are not filled with zero.

GRBK contract OI by effective market date, newest first
Market dateOpen interestChange vs prior saved day
Oct 21, 2026Viewing20
Oct 16, 20262-10
Oct 14, 2026120
Oct 13, 2026120
Oct 09, 2026120
Oct 08, 2026120
Oct 07, 2026120
Oct 06, 2026120
Oct 05, 2026120
Oct 02, 202612No prior observation