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Contract OI history

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Dec 18, 2026 EXPIRATION

EFX $140.00 Put

EFX261218P00140000

Latest saved OI168Oct 23, 2026
Last change0vs previous saved observation
Saved market days12Oct 02, 2026 onwards
Daily open interest Hover a point for its date and OI
EFX $140.00 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. 168840 2026-10-02: 149 OI2026-10-05: 149 OI2026-10-06: 149 OI2026-10-07: 150 OI2026-10-08: 150 OI2026-10-09: 150 OI2026-10-13: 149 OI2026-10-14: 148 OI2026-10-15: 148 OI2026-10-16: 163 OI2026-10-21: 168 OI2026-10-23: 168 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, 2026Viewing1680
Oct 21, 2026168+5
Oct 16, 2026163+15
Oct 15, 20261480
Oct 14, 2026148-1
Oct 13, 2026149-1
Oct 09, 20261500
Oct 08, 20261500
Oct 07, 2026150+1
Oct 06, 20261490
Oct 05, 20261490
Oct 02, 2026149No prior observation