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Contract OI history

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Dec 18, 2026 EXPIRATION

EFOR $17.50 Put

EFOR261218P00017500

Latest saved OI107Oct 23, 2026
Last change-1vs previous saved observation
Saved market days11Oct 02, 2026 onwards
Daily open interest Hover a point for its date and OI
EFOR $17.50 put open interest history 11 saved observations from 2026-10-02 to 2026-10-23. Exact values and changes are listed in the table below. 113560 2026-10-02: 104 OI2026-10-05: 104 OI2026-10-06: 109 OI2026-10-07: 109 OI2026-10-08: 109 OI2026-10-09: 109 OI2026-10-13: 113 OI2026-10-14: 113 OI2026-10-16: 113 OI2026-10-20: 108 OI2026-10-23: 107 OI Oct 02, 2026Oct 23, 2026

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

EFOR contract OI by effective market date, newest first
Market dateOpen interestChange vs prior saved day
Oct 23, 2026Viewing107-1
Oct 20, 2026108-5
Oct 16, 20261130
Oct 14, 20261130
Oct 13, 2026113+4
Oct 09, 20261090
Oct 08, 20261090
Oct 07, 20261090
Oct 06, 2026109+5
Oct 05, 20261040
Oct 02, 2026104No prior observation