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Contract OI history

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Dec 18, 2026 EXPIRATION

CNP $40.00 Call

CNP261218C00040000

Latest saved OI431Oct 23, 2026
Last change-1vs previous saved observation
Saved market days12Oct 02, 2026 onwards
Daily open interest Hover a point for its date and OI
CNP $40.00 call open interest history 12 saved observations from 2026-10-02 to 2026-10-23. Exact values and changes are listed in the table below. 4322160 2026-10-02: 272 OI2026-10-05: 272 OI2026-10-06: 272 OI2026-10-07: 272 OI2026-10-08: 423 OI2026-10-09: 423 OI2026-10-13: 423 OI2026-10-14: 423 OI2026-10-15: 431 OI2026-10-16: 431 OI2026-10-21: 432 OI2026-10-23: 431 OI Oct 02, 2026Oct 23, 2026

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

CNP contract OI by effective market date, newest first
Market dateOpen interestChange vs prior saved day
Oct 23, 2026Viewing431-1
Oct 21, 2026432+1
Oct 16, 20264310
Oct 15, 2026431+8
Oct 14, 20264230
Oct 13, 20264230
Oct 09, 20264230
Oct 08, 2026423+151
Oct 07, 20262720
Oct 06, 20262720
Oct 05, 20262720
Oct 02, 2026272No prior observation