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Contract OI history

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Jan 15, 2027 EXPIRATION

EFC $12.50 Put

EFC270115P00012500

Latest saved OI85Oct 23, 2026
Last change0vs previous saved observation
Saved market days11Oct 02, 2026 onwards
Daily open interest Hover a point for its date and OI
EFC $12.50 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. 85420 2026-10-02: 57 OI2026-10-05: 57 OI2026-10-06: 57 OI2026-10-07: 57 OI2026-10-08: 57 OI2026-10-09: 58 OI2026-10-13: 58 OI2026-10-14: 58 OI2026-10-16: 59 OI2026-10-20: 85 OI2026-10-23: 85 OI Oct 02, 2026Oct 23, 2026

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

EFC contract OI by effective market date, newest first
Market dateOpen interestChange vs prior saved day
Oct 23, 2026Viewing850
Oct 20, 202685+26
Oct 16, 202659+1
Oct 14, 2026580
Oct 13, 2026580
Oct 09, 202658+1
Oct 08, 2026570
Oct 07, 2026570
Oct 06, 2026570
Oct 05, 2026570
Oct 02, 202657No prior observation