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Contract OI history

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Nov 06, 2026 EXPIRATION

COST $740.00 Put

COST261106P00740000

Latest saved OI925Oct 23, 2026
Last change+1vs previous saved observation
Saved market days7Oct 09, 2026 onwards
Daily open interest Hover a point for its date and OI
COST $740.00 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. 9254620 2026-10-09: 797 OI2026-10-13: 913 OI2026-10-14: 913 OI2026-10-15: 913 OI2026-10-16: 915 OI2026-10-21: 924 OI2026-10-23: 925 OI Oct 09, 2026Oct 23, 2026

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

COST contract OI by effective market date, newest first
Market dateOpen interestChange vs prior saved day
Oct 23, 2026Viewing925+1
Oct 21, 2026924+9
Oct 16, 2026915+2
Oct 15, 20269130
Oct 14, 20269130
Oct 13, 2026913+116
Oct 09, 2026797No prior observation