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Contract OI history

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Jan 21, 2028 EXPIRATION

GRPN $18.00 Call

GRPN280121C00018000

Latest saved OI1,288Oct 23, 2026
Last change+21vs previous saved observation
Saved market days8Oct 08, 2026 onwards
Daily open interest Hover a point for its date and OI
GRPN $18.00 call open interest history 8 saved observations from 2026-10-08 to 2026-10-23. Exact values and changes are listed in the table below. 1,2886440 2026-10-08: 1,268 OI2026-10-09: 1,268 OI2026-10-13: 1,268 OI2026-10-14: 1,268 OI2026-10-15: 1,268 OI2026-10-16: 1,267 OI2026-10-20: 1,267 OI2026-10-23: 1,288 OI Oct 08, 2026Oct 23, 2026

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

GRPN contract OI by effective market date, newest first
Market dateOpen interestChange vs prior saved day
Oct 23, 20261,288+21
Oct 20, 2026Viewing1,2670
Oct 16, 20261,267-1
Oct 15, 20261,2680
Oct 14, 20261,2680
Oct 13, 20261,2680
Oct 09, 20261,2680
Oct 08, 20261,268No prior observation