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Contract OI history

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Nov 20, 2026 EXPIRATION

GRPN $18.00 Put

GRPN261120P00018000

Latest saved OI400Oct 23, 2026
Last change-941vs previous saved observation
Saved market days8Oct 08, 2026 onwards
Daily open interest Hover a point for its date and OI
GRPN $18.00 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. 1,3416700 2026-10-08: 100 OI2026-10-09: 114 OI2026-10-13: 320 OI2026-10-14: 320 OI2026-10-15: 1,322 OI2026-10-16: 1,332 OI2026-10-20: 1,341 OI2026-10-23: 400 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, 2026400-941
Oct 20, 2026Viewing1,341+9
Oct 16, 20261,332+10
Oct 15, 20261,322+1,002
Oct 14, 20263200
Oct 13, 2026320+206
Oct 09, 2026114+14
Oct 08, 2026100No prior observation