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Contract OI history

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Jan 15, 2027 EXPIRATION

ALGN $180.00 Call

ALGN270115C00180000

Latest saved OI683Oct 23, 2026
Last change+123vs previous saved observation
Saved market days7Oct 09, 2026 onwards
Daily open interest Hover a point for its date and OI
ALGN $180.00 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. 6833410 2026-10-09: 557 OI2026-10-13: 558 OI2026-10-14: 558 OI2026-10-15: 558 OI2026-10-16: 558 OI2026-10-21: 560 OI2026-10-23: 683 OI Oct 09, 2026Oct 23, 2026

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

ALGN contract OI by effective market date, newest first
Market dateOpen interestChange vs prior saved day
Oct 23, 2026Viewing683+123
Oct 21, 2026560+2
Oct 16, 20265580
Oct 15, 20265580
Oct 14, 20265580
Oct 13, 2026558+1
Oct 09, 2026557No prior observation