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Contract OI history

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Nov 20, 2026 EXPIRATION

MDLN $40.00 Put

MDLN261120P00040000

Latest saved OI402Oct 23, 2026
Last change0vs previous saved observation
Saved market days7Oct 09, 2026 onwards
Daily open interest Hover a point for its date and OI
MDLN $40.00 put open interest history 7 saved observations from 2026-10-09 to 2026-10-23. Exact values and changes are listed in the table below. 4022010 2026-10-09: 400 OI2026-10-13: 399 OI2026-10-14: 399 OI2026-10-15: 401 OI2026-10-16: 401 OI2026-10-21: 402 OI2026-10-23: 402 OI Oct 09, 2026Oct 23, 2026

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

MDLN contract OI by effective market date, newest first
Market dateOpen interestChange vs prior saved day
Oct 23, 20264020
Oct 21, 2026Viewing402+1
Oct 16, 20264010
Oct 15, 2026401+2
Oct 14, 20263990
Oct 13, 2026399-1
Oct 09, 2026400No prior observation