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Contract OI history

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Jan 15, 2027 EXPIRATION

CG $37.50 Put

CG270115P00037500

Latest saved OI539Oct 23, 2026
Last change-1vs 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. 5402700 2026-10-09: 526 OI2026-10-13: 524 OI2026-10-14: 540 OI2026-10-15: 540 OI2026-10-16: 539 OI2026-10-21: 540 OI2026-10-23: 539 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, 2026Viewing539-1
Oct 21, 2026540+1
Oct 16, 2026539-1
Oct 15, 20265400
Oct 14, 2026540+16
Oct 13, 2026524-2
Oct 09, 2026526No prior observation