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Contract OI history

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Oct 23, 2026 EXPIRATION

COST $952.50 Put

COST261023P00952500

Latest saved OI612Oct 23, 2026
Last change+15vs previous saved observation
Saved market days7Oct 09, 2026 onwards
Daily open interest Hover a point for its date and OI
COST $952.50 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. 6123060 2026-10-09: 0 OI2026-10-13: 81 OI2026-10-14: 81 OI2026-10-15: 80 OI2026-10-16: 511 OI2026-10-21: 597 OI2026-10-23: 612 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, 2026Viewing612+15
Oct 21, 2026597+86
Oct 16, 2026511+431
Oct 15, 202680-1
Oct 14, 2026810
Oct 13, 202681+81
Oct 09, 20260No prior observation