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Contract OI history

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Feb 19, 2027 EXPIRATION

COST $970.00 Put

COST270219P00970000

Latest saved OI102Oct 23, 2026
Last change+12vs previous saved observation
Saved market days7Oct 09, 2026 onwards
Daily open interest Hover a point for its date and OI
COST $970.00 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. 102510 2026-10-09: 80 OI2026-10-13: 80 OI2026-10-14: 80 OI2026-10-15: 80 OI2026-10-16: 80 OI2026-10-21: 90 OI2026-10-23: 102 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, 2026Viewing102+12
Oct 21, 202690+10
Oct 16, 2026800
Oct 15, 2026800
Oct 14, 2026800
Oct 13, 2026800
Oct 09, 202680No prior observation