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Contract OI history

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Apr 16, 2027 EXPIRATION

COSM $1000.00 Put

COSM270416P00001000

Latest saved OI148Oct 23, 2026
Last change0vs previous saved observation
Saved market days6Oct 08, 2026 onwards
Daily open interest Hover a point for its date and OI
COSM $1000.00 put open interest history 6 saved observations from 2026-10-08 to 2026-10-23. Exact values and changes are listed in the table below. 148740 2026-10-08: 148 OI2026-10-13: 148 OI2026-10-14: 148 OI2026-10-16: 148 OI2026-10-20: 148 OI2026-10-23: 148 OI Oct 08, 2026Oct 23, 2026

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

COSM contract OI by effective market date, newest first
Market dateOpen interestChange vs prior saved day
Oct 23, 2026Viewing1480
Oct 20, 20261480
Oct 16, 20261480
Oct 14, 20261480
Oct 13, 20261480
Oct 08, 2026148No prior observation