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Contract OI history

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Nov 20, 2026 EXPIRATION

EFX $135.00 Put

EFX261120P00135000

Latest saved OI226Oct 23, 2026
Last change+3vs previous saved observation
Saved market days12Oct 02, 2026 onwards
Daily open interest Hover a point for its date and OI
EFX $135.00 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. 2261130 2026-10-02: 4 OI2026-10-05: 4 OI2026-10-06: 9 OI2026-10-07: 10 OI2026-10-08: 86 OI2026-10-09: 86 OI2026-10-13: 221 OI2026-10-14: 223 OI2026-10-15: 223 OI2026-10-16: 222 OI2026-10-21: 223 OI2026-10-23: 226 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, 2026Viewing226+3
Oct 21, 2026223+1
Oct 16, 2026222-1
Oct 15, 20262230
Oct 14, 2026223+2
Oct 13, 2026221+135
Oct 09, 2026860
Oct 08, 202686+76
Oct 07, 202610+1
Oct 06, 20269+5
Oct 05, 202640
Oct 02, 20264No prior observation