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Contract OI history

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Oct 30, 2026 EXPIRATION

M $19.50 Put

M261030P00019500

Latest saved OI28Oct 23, 2026
Last change-2vs previous saved observation
Saved market days12Oct 02, 2026 onwards
Daily open interest Hover a point for its date and OI
M $19.50 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. 31150 2026-10-02: 26 OI2026-10-05: 26 OI2026-10-06: 26 OI2026-10-07: 26 OI2026-10-08: 26 OI2026-10-09: 27 OI2026-10-13: 29 OI2026-10-14: 29 OI2026-10-15: 31 OI2026-10-16: 29 OI2026-10-21: 30 OI2026-10-23: 28 OI Oct 02, 2026Oct 23, 2026

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

M contract OI by effective market date, newest first
Market dateOpen interestChange vs prior saved day
Oct 23, 2026Viewing28-2
Oct 21, 202630+1
Oct 16, 202629-2
Oct 15, 202631+2
Oct 14, 2026290
Oct 13, 202629+2
Oct 09, 202627+1
Oct 08, 2026260
Oct 07, 2026260
Oct 06, 2026260
Oct 05, 2026260
Oct 02, 202626No prior observation