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Contract OI history

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Jan 15, 2027 EXPIRATION

GFL $40.00 Put

GFL270115P00040000

Latest saved OI112Oct 23, 2026
Last change0vs 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. 150750 2026-10-02: 32 OI2026-10-05: 32 OI2026-10-06: 92 OI2026-10-07: 92 OI2026-10-08: 92 OI2026-10-09: 150 OI2026-10-13: 150 OI2026-10-14: 150 OI2026-10-15: 100 OI2026-10-16: 100 OI2026-10-21: 112 OI2026-10-23: 112 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, 2026Viewing1120
Oct 21, 2026112+12
Oct 16, 20261000
Oct 15, 2026100-50
Oct 14, 20261500
Oct 13, 20261500
Oct 09, 2026150+58
Oct 08, 2026920
Oct 07, 2026920
Oct 06, 202692+60
Oct 05, 2026320
Oct 02, 202632No prior observation