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Contract OI history

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Nov 20, 2026 EXPIRATION

CSTM $25.00 Call

CSTM261120C00025000

Latest saved OI97Oct 23, 2026
Last change+11vs 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. 97480 2026-10-02: 73 OI2026-10-05: 86 OI2026-10-06: 86 OI2026-10-07: 86 OI2026-10-08: 86 OI2026-10-13: 86 OI2026-10-14: 88 OI2026-10-16: 88 OI2026-10-20: 86 OI2026-10-23: 97 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, 2026Viewing97+11
Oct 20, 202686-2
Oct 16, 2026880
Oct 14, 202688+2
Oct 13, 2026860
Oct 08, 2026860
Oct 07, 2026860
Oct 06, 2026860
Oct 05, 202686+13
Oct 02, 202673No prior observation