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Contract OI history

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Nov 20, 2026 EXPIRATION

M $18.00 Put

M261120P00018000

Latest saved OI237Oct 23, 2026
Last change+4vs previous saved observation
Saved market days12Oct 02, 2026 onwards
Daily open interest Hover a point for its date and OI
M $18.00 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. 2401200 2026-10-02: 236 OI2026-10-05: 236 OI2026-10-06: 238 OI2026-10-07: 238 OI2026-10-08: 238 OI2026-10-09: 240 OI2026-10-13: 235 OI2026-10-14: 235 OI2026-10-15: 234 OI2026-10-16: 233 OI2026-10-21: 233 OI2026-10-23: 237 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, 2026Viewing237+4
Oct 21, 20262330
Oct 16, 2026233-1
Oct 15, 2026234-1
Oct 14, 20262350
Oct 13, 2026235-5
Oct 09, 2026240+2
Oct 08, 20262380
Oct 07, 20262380
Oct 06, 2026238+2
Oct 05, 20262360
Oct 02, 2026236No prior observation