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Contract OI history

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Nov 20, 2026 EXPIRATION

COST $890.00 Put

COST261120P00890000

Latest saved OI418Oct 23, 2026
Last change-55vs 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. 4732360 2026-10-09: 231 OI2026-10-13: 263 OI2026-10-14: 263 OI2026-10-15: 376 OI2026-10-16: 349 OI2026-10-21: 473 OI2026-10-23: 418 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, 2026Viewing418-55
Oct 21, 2026473+124
Oct 16, 2026349-27
Oct 15, 2026376+113
Oct 14, 20262630
Oct 13, 2026263+32
Oct 09, 2026231No prior observation