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Contract OI history

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Jan 15, 2027 EXPIRATION

ATRC $55.00 Call

ATRC270115C00055000

Latest saved OI24Oct 21, 2026
Last change0vs previous saved observation
Saved market days5Oct 09, 2026 onwards
Daily open interest Hover a point for its date and OI
ATRC $55.00 call open interest history 5 saved observations from 2026-10-09 to 2026-10-21. Exact values and changes are listed in the table below. 24120 2026-10-09: 22 OI2026-10-13: 24 OI2026-10-14: 24 OI2026-10-16: 24 OI2026-10-21: 24 OI Oct 09, 2026Oct 21, 2026

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

ATRC contract OI by effective market date, newest first
Market dateOpen interestChange vs prior saved day
Oct 21, 2026Viewing240
Oct 16, 2026240
Oct 14, 2026240
Oct 13, 202624+2
Oct 09, 202622No prior observation