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Contract OI history

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Nov 20, 2026 EXPIRATION

CSTM $30.00 Call

CSTM261120C00030000

Latest saved OI1,505Oct 23, 2026
Last change+33vs previous saved observation
Saved market days10Oct 02, 2026 onwards
Daily open interest Hover a point for its date and OI
CSTM $30.00 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. 1,5057520 2026-10-02: 976 OI2026-10-05: 976 OI2026-10-06: 981 OI2026-10-07: 984 OI2026-10-08: 984 OI2026-10-13: 998 OI2026-10-14: 999 OI2026-10-16: 999 OI2026-10-20: 1,472 OI2026-10-23: 1,505 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, 2026Viewing1,505+33
Oct 20, 20261,472+473
Oct 16, 20269990
Oct 14, 2026999+1
Oct 13, 2026998+14
Oct 08, 20269840
Oct 07, 2026984+3
Oct 06, 2026981+5
Oct 05, 20269760
Oct 02, 2026976No prior observation