OITracker Cboe delayed data

Contract OI history

Back to GRBK

Nov 20, 2026 EXPIRATION

GRBK $70.00 Put

GRBK261120P00070000

Latest saved OI28Oct 21, 2026
Last change-13vs previous saved observation
Saved market days10Oct 02, 2026 onwards
Daily open interest Hover a point for its date and OI
GRBK $70.00 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. 41200 2026-10-02: 32 OI2026-10-05: 33 OI2026-10-06: 33 OI2026-10-07: 33 OI2026-10-08: 38 OI2026-10-09: 39 OI2026-10-13: 41 OI2026-10-14: 41 OI2026-10-16: 41 OI2026-10-21: 28 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, 2026Viewing28-13
Oct 16, 2026410
Oct 14, 2026410
Oct 13, 202641+2
Oct 09, 202639+1
Oct 08, 202638+5
Oct 07, 2026330
Oct 06, 2026330
Oct 05, 202633+1
Oct 02, 202632No prior observation