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Contract OI history

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Jan 15, 2027 EXPIRATION

COST $890.00 Put

COST270115P00890000

Latest saved OI1,510Oct 23, 2026
Last change+2vs previous saved observation
Saved market days7Oct 09, 2026 onwards
Daily open interest Hover a point for its date and OI
COST $890.00 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. 1,5357670 2026-10-09: 1,531 OI2026-10-13: 1,535 OI2026-10-14: 1,535 OI2026-10-15: 1,517 OI2026-10-16: 1,499 OI2026-10-21: 1,508 OI2026-10-23: 1,510 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, 2026Viewing1,510+2
Oct 21, 20261,508+9
Oct 16, 20261,499-18
Oct 15, 20261,517-18
Oct 14, 20261,5350
Oct 13, 20261,535+4
Oct 09, 20261,531No prior observation