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Contract OI history

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Nov 20, 2026 EXPIRATION

CG $37.50 Put

CG261120P00037500

Latest saved OI3,529Oct 23, 2026
Last change+2vs previous saved observation
Saved market days7Oct 09, 2026 onwards
Daily open interest Hover a point for its date and OI
CG $37.50 put open interest history 7 saved observations from 2026-10-09 to 2026-10-23. Exact values and changes are listed in the table below. 3,5291,7640 2026-10-09: 3,505 OI2026-10-13: 3,501 OI2026-10-14: 3,505 OI2026-10-15: 3,506 OI2026-10-16: 3,507 OI2026-10-21: 3,527 OI2026-10-23: 3,529 OI Oct 09, 2026Oct 23, 2026

All saved dates are shown. Changes compare consecutive saved observations. Missing observations are not filled with zero.

CG contract OI by effective market date, newest first
Market dateOpen interestChange vs prior saved day
Oct 23, 2026Viewing3,529+2
Oct 21, 20263,527+20
Oct 16, 20263,507+1
Oct 15, 20263,506+1
Oct 14, 20263,505+4
Oct 13, 20263,501-4
Oct 09, 20263,505No prior observation