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Contract OI history

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Dec 18, 2026 EXPIRATION

MED $12.50 Call

MED261218C00012500

Latest saved OI646Oct 23, 2026
Last change+50vs previous saved observation
Saved market days11Oct 02, 2026 onwards
Daily open interest Hover a point for its date and OI
MED $12.50 call open interest history 11 saved observations from 2026-10-02 to 2026-10-23. Exact values and changes are listed in the table below. 6463230 2026-10-02: 608 OI2026-10-05: 608 OI2026-10-06: 608 OI2026-10-07: 608 OI2026-10-08: 608 OI2026-10-09: 608 OI2026-10-13: 597 OI2026-10-14: 597 OI2026-10-16: 596 OI2026-10-20: 596 OI2026-10-23: 646 OI Oct 02, 2026Oct 23, 2026

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

MED contract OI by effective market date, newest first
Market dateOpen interestChange vs prior saved day
Oct 23, 2026Viewing646+50
Oct 20, 20265960
Oct 16, 2026596-1
Oct 14, 20265970
Oct 13, 2026597-11
Oct 09, 20266080
Oct 08, 20266080
Oct 07, 20266080
Oct 06, 20266080
Oct 05, 20266080
Oct 02, 2026608No prior observation