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Contract OI history

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Nov 20, 2026 EXPIRATION

GRPN $21.00 Put

GRPN261120P00021000

Latest saved OI184Oct 23, 2026
Last change0vs previous saved observation
Saved market days8Oct 08, 2026 onwards
Daily open interest Hover a point for its date and OI
GRPN $21.00 put open interest history 8 saved observations from 2026-10-08 to 2026-10-23. Exact values and changes are listed in the table below. 184920 2026-10-08: 173 OI2026-10-09: 173 OI2026-10-13: 184 OI2026-10-14: 184 OI2026-10-15: 184 OI2026-10-16: 184 OI2026-10-20: 184 OI2026-10-23: 184 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, 20261840
Oct 20, 2026Viewing1840
Oct 16, 20261840
Oct 15, 20261840
Oct 14, 20261840
Oct 13, 2026184+11
Oct 09, 20261730
Oct 08, 2026173No prior observation