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Contract OI history

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Jan 15, 2027 EXPIRATION

CSTM $30.00 Call

CSTM270115C00030000

Latest saved OI1,347Oct 23, 2026
Last change0vs 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. 1,3476730 2026-10-02: 1,329 OI2026-10-05: 1,329 OI2026-10-06: 1,329 OI2026-10-07: 1,332 OI2026-10-08: 1,332 OI2026-10-13: 1,332 OI2026-10-14: 1,347 OI2026-10-16: 1,347 OI2026-10-20: 1,347 OI2026-10-23: 1,347 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, 2026Viewing1,3470
Oct 20, 20261,3470
Oct 16, 20261,3470
Oct 14, 20261,347+15
Oct 13, 20261,3320
Oct 08, 20261,3320
Oct 07, 20261,332+3
Oct 06, 20261,3290
Oct 05, 20261,3290
Oct 02, 20261,329No prior observation