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Contract OI history

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Nov 20, 2026 EXPIRATION

MCO $440.00 Put

MCO261120P00440000

Latest saved OI166Oct 23, 2026
Last change-18vs previous saved observation
Saved market days12Oct 02, 2026 onwards
Daily open interest Hover a point for its date and OI
MCO $440.00 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. 184920 2026-10-02: 135 OI2026-10-05: 139 OI2026-10-06: 141 OI2026-10-07: 141 OI2026-10-08: 142 OI2026-10-09: 145 OI2026-10-13: 147 OI2026-10-14: 153 OI2026-10-15: 155 OI2026-10-16: 137 OI2026-10-21: 184 OI2026-10-23: 166 OI Oct 02, 2026Oct 23, 2026

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

MCO contract OI by effective market date, newest first
Market dateOpen interestChange vs prior saved day
Oct 23, 2026Viewing166-18
Oct 21, 2026184+47
Oct 16, 2026137-18
Oct 15, 2026155+2
Oct 14, 2026153+6
Oct 13, 2026147+2
Oct 09, 2026145+3
Oct 08, 2026142+1
Oct 07, 20261410
Oct 06, 2026141+2
Oct 05, 2026139+4
Oct 02, 2026135No prior observation