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Contract OI history

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Nov 20, 2026 EXPIRATION

CSTM $23.00 Put

CSTM261120P00023000

Latest saved OI94Oct 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 $23.00 put open interest history 10 saved observations from 2026-10-02 to 2026-10-23. Exact values and changes are listed in the table below. 95470 2026-10-02: 78 OI2026-10-05: 80 OI2026-10-06: 79 OI2026-10-07: 79 OI2026-10-08: 79 OI2026-10-13: 85 OI2026-10-14: 87 OI2026-10-16: 87 OI2026-10-20: 95 OI2026-10-23: 94 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, 2026Viewing94-1
Oct 20, 202695+8
Oct 16, 2026870
Oct 14, 202687+2
Oct 13, 202685+6
Oct 08, 2026790
Oct 07, 2026790
Oct 06, 202679-1
Oct 05, 202680+2
Oct 02, 202678No prior observation