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Contract OI history

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Dec 18, 2026 EXPIRATION

EFX $200.00 Call

EFX261218C00200000

Latest saved OI136Oct 23, 2026
Last change+21vs previous saved observation
Saved market days12Oct 02, 2026 onwards
Daily open interest Hover a point for its date and OI
EFX $200.00 call open interest history 12 saved observations from 2026-10-02 to 2026-10-23. Exact values and changes are listed in the table below. 136680 2026-10-02: 75 OI2026-10-05: 66 OI2026-10-06: 66 OI2026-10-07: 65 OI2026-10-08: 64 OI2026-10-09: 58 OI2026-10-13: 58 OI2026-10-14: 58 OI2026-10-15: 58 OI2026-10-16: 59 OI2026-10-21: 115 OI2026-10-23: 136 OI Oct 02, 2026Oct 23, 2026

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

EFX contract OI by effective market date, newest first
Market dateOpen interestChange vs prior saved day
Oct 23, 2026Viewing136+21
Oct 21, 2026115+56
Oct 16, 202659+1
Oct 15, 2026580
Oct 14, 2026580
Oct 13, 2026580
Oct 09, 202658-6
Oct 08, 202664-1
Oct 07, 202665-1
Oct 06, 2026660
Oct 05, 202666-9
Oct 02, 202675No prior observation