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Contract OI history

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Jan 15, 2027 EXPIRATION

CSTM $25.00 Call

CSTM270115C00025000

Latest saved OI642Oct 23, 2026
Last change+1vs previous saved observation
Saved market days10Oct 02, 2026 onwards
Daily open interest Hover a point for its date and OI
CSTM $25.00 call open interest history 10 saved observations from 2026-10-02 to 2026-10-23. Exact values and changes are listed in the table below. 6423210 2026-10-02: 625 OI2026-10-05: 625 OI2026-10-06: 625 OI2026-10-07: 635 OI2026-10-08: 635 OI2026-10-13: 622 OI2026-10-14: 628 OI2026-10-16: 628 OI2026-10-20: 641 OI2026-10-23: 642 OI Oct 02, 2026Oct 23, 2026

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

CSTM contract OI by effective market date, newest first
Market dateOpen interestChange vs prior saved day
Oct 23, 2026Viewing642+1
Oct 20, 2026641+13
Oct 16, 20266280
Oct 14, 2026628+6
Oct 13, 2026622-13
Oct 08, 20266350
Oct 07, 2026635+10
Oct 06, 20266250
Oct 05, 20266250
Oct 02, 2026625No prior observation