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Contract OI history

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Nov 20, 2026 EXPIRATION

GFL $37.50 Put

GFL261120P00037500

Latest saved OI6,398Oct 23, 2026
Last change+110vs previous saved observation
Saved market days12Oct 02, 2026 onwards
Daily open interest Hover a point for its date and OI
GFL $37.50 put open interest history 12 saved observations from 2026-10-02 to 2026-10-23. Exact values and changes are listed in the table below. 6,3983,1990 2026-10-02: 655 OI2026-10-05: 660 OI2026-10-06: 662 OI2026-10-07: 697 OI2026-10-08: 698 OI2026-10-09: 725 OI2026-10-13: 739 OI2026-10-14: 900 OI2026-10-15: 901 OI2026-10-16: 902 OI2026-10-21: 6,288 OI2026-10-23: 6,398 OI Oct 02, 2026Oct 23, 2026

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

GFL contract OI by effective market date, newest first
Market dateOpen interestChange vs prior saved day
Oct 23, 2026Viewing6,398+110
Oct 21, 20266,288+5,386
Oct 16, 2026902+1
Oct 15, 2026901+1
Oct 14, 2026900+161
Oct 13, 2026739+14
Oct 09, 2026725+27
Oct 08, 2026698+1
Oct 07, 2026697+35
Oct 06, 2026662+2
Oct 05, 2026660+5
Oct 02, 2026655No prior observation