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Contract OI history

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Nov 20, 2026 EXPIRATION

GFL $40.00 Put

GFL261120P00040000

Latest saved OI8,972Oct 23, 2026
Last change-25vs previous saved observation
Saved market days12Oct 02, 2026 onwards
Daily open interest Hover a point for its date and OI
GFL $40.00 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. 9,3784,6890 2026-10-02: 2,608 OI2026-10-05: 3,024 OI2026-10-06: 6,924 OI2026-10-07: 7,367 OI2026-10-08: 7,492 OI2026-10-09: 7,536 OI2026-10-13: 7,516 OI2026-10-14: 8,215 OI2026-10-15: 9,082 OI2026-10-16: 9,378 OI2026-10-21: 8,997 OI2026-10-23: 8,972 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, 2026Viewing8,972-25
Oct 21, 20268,997-381
Oct 16, 20269,378+296
Oct 15, 20269,082+867
Oct 14, 20268,215+699
Oct 13, 20267,516-20
Oct 09, 20267,536+44
Oct 08, 20267,492+125
Oct 07, 20267,367+443
Oct 06, 20266,924+3,900
Oct 05, 20263,024+416
Oct 02, 20262,608No prior observation