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Contract OI history

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Mar 19, 2027 EXPIRATION

CNTB $2.50 Call

CNTB270319C00002500

Latest saved OI653Oct 23, 2026
Last change+23vs previous saved observation
Saved market days6Oct 08, 2026 onwards
Daily open interest Hover a point for its date and OI
CNTB $2.50 call open interest history 6 saved observations from 2026-10-08 to 2026-10-23. Exact values and changes are listed in the table below. 6533260 2026-10-08: 338 OI2026-10-13: 384 OI2026-10-14: 384 OI2026-10-16: 383 OI2026-10-20: 630 OI2026-10-23: 653 OI Oct 08, 2026Oct 23, 2026

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

CNTB contract OI by effective market date, newest first
Market dateOpen interestChange vs prior saved day
Oct 23, 2026Viewing653+23
Oct 20, 2026630+247
Oct 16, 2026383-1
Oct 14, 20263840
Oct 13, 2026384+46
Oct 08, 2026338No prior observation