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Contract OI history

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Dec 18, 2026 EXPIRATION

GFL $40.00 Put

GFL261218P00040000

Latest saved OI2,468Oct 23, 2026
Last change-84vs 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. 2,5521,2760 2026-10-02: 2,155 OI2026-10-05: 2,047 OI2026-10-06: 2,130 OI2026-10-07: 2,188 OI2026-10-08: 2,188 OI2026-10-09: 2,412 OI2026-10-13: 2,528 OI2026-10-14: 2,528 OI2026-10-15: 2,539 OI2026-10-16: 2,512 OI2026-10-21: 2,552 OI2026-10-23: 2,468 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, 2026Viewing2,468-84
Oct 21, 20262,552+40
Oct 16, 20262,512-27
Oct 15, 20262,539+11
Oct 14, 20262,5280
Oct 13, 20262,528+116
Oct 09, 20262,412+224
Oct 08, 20262,1880
Oct 07, 20262,188+58
Oct 06, 20262,130+83
Oct 05, 20262,047-108
Oct 02, 20262,155No prior observation