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Contract OI history

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Jan 15, 2027 EXPIRATION

CSTM $27.00 Call

CSTM270115C00027000

Latest saved OI5,525Oct 23, 2026
Last change+2vs previous saved observation
Saved market days10Oct 02, 2026 onwards
Daily open interest Hover a point for its date and OI
CSTM $27.00 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. 5,5252,7620 2026-10-02: 5,520 OI2026-10-05: 5,520 OI2026-10-06: 5,520 OI2026-10-07: 5,520 OI2026-10-08: 5,520 OI2026-10-13: 5,523 OI2026-10-14: 5,522 OI2026-10-16: 5,522 OI2026-10-20: 5,523 OI2026-10-23: 5,525 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, 2026Viewing5,525+2
Oct 20, 20265,523+1
Oct 16, 20265,5220
Oct 14, 20265,522-1
Oct 13, 20265,523+3
Oct 08, 20265,5200
Oct 07, 20265,5200
Oct 06, 20265,5200
Oct 05, 20265,5200
Oct 02, 20265,520No prior observation