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Contract OI history

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Jan 15, 2027 EXPIRATION

GFL $42.50 Put

GFL270115P00042500

Latest saved OI287Oct 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 $42.50 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. 2871430 2026-10-02: 54 OI2026-10-05: 54 OI2026-10-06: 54 OI2026-10-07: 54 OI2026-10-08: 54 OI2026-10-09: 71 OI2026-10-13: 82 OI2026-10-14: 90 OI2026-10-15: 90 OI2026-10-16: 90 OI2026-10-21: 287 OI2026-10-23: 287 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, 2026Viewing2870
Oct 21, 2026287+197
Oct 16, 2026900
Oct 15, 2026900
Oct 14, 202690+8
Oct 13, 202682+11
Oct 09, 202671+17
Oct 08, 2026540
Oct 07, 2026540
Oct 06, 2026540
Oct 05, 2026540
Oct 02, 202654No prior observation