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Contract OI history

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May 21, 2027 EXPIRATION

BULL $17.50 Call

BULL270521C00017500

Latest saved OI12Oct 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
BULL $17.50 call open interest history 7 saved observations from 2026-10-09 to 2026-10-23. Exact values and changes are listed in the table below. 108540 2026-10-09: 107 OI2026-10-13: 108 OI2026-10-14: 108 OI2026-10-15: 10 OI2026-10-16: 10 OI2026-10-21: 11 OI2026-10-23: 12 OI Oct 09, 2026Oct 23, 2026

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

BULL contract OI by effective market date, newest first
Market dateOpen interestChange vs prior saved day
Oct 23, 2026Viewing12+1
Oct 21, 202611+1
Oct 16, 2026100
Oct 15, 202610-98
Oct 14, 20261080
Oct 13, 2026108+1
Oct 09, 2026107No prior observation