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Contract OI history

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Dec 18, 2026 EXPIRATION

MOS $27.50 Put

MOS261218P00027500

Latest saved OI421Oct 23, 2026
Last change0vs previous saved observation
Saved market days12Oct 02, 2026 onwards
Daily open interest Hover a point for its date and OI
MOS $27.50 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. 4272130 2026-10-02: 426 OI2026-10-05: 426 OI2026-10-06: 427 OI2026-10-07: 427 OI2026-10-08: 427 OI2026-10-09: 427 OI2026-10-13: 427 OI2026-10-14: 427 OI2026-10-15: 426 OI2026-10-16: 426 OI2026-10-21: 421 OI2026-10-23: 421 OI Oct 02, 2026Oct 23, 2026

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

MOS contract OI by effective market date, newest first
Market dateOpen interestChange vs prior saved day
Oct 23, 20264210
Oct 21, 2026Viewing421-5
Oct 16, 20264260
Oct 15, 2026426-1
Oct 14, 20264270
Oct 13, 20264270
Oct 09, 20264270
Oct 08, 20264270
Oct 07, 20264270
Oct 06, 2026427+1
Oct 05, 20264260
Oct 02, 2026426No prior observation