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Contract OI history

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Dec 18, 2026 EXPIRATION

ALGN $180.00 Call

ALGN261218C00180000

Latest saved OI298Oct 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
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. 2981490 2026-10-09: 274 OI2026-10-13: 274 OI2026-10-14: 274 OI2026-10-15: 274 OI2026-10-16: 289 OI2026-10-21: 297 OI2026-10-23: 298 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, 2026Viewing298+1
Oct 21, 2026297+8
Oct 16, 2026289+15
Oct 15, 20262740
Oct 14, 20262740
Oct 13, 20262740
Oct 09, 2026274No prior observation