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Contract OI history

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Dec 18, 2026 EXPIRATION

ALGN $190.00 Call

ALGN261218C00190000

Latest saved OI235Oct 23, 2026
Last change-2vs previous saved observation
Saved market days7Oct 09, 2026 onwards
Daily open interest Hover a point for its date and OI
ALGN $190.00 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. 2371180 2026-10-09: 172 OI2026-10-13: 172 OI2026-10-14: 194 OI2026-10-15: 194 OI2026-10-16: 237 OI2026-10-21: 237 OI2026-10-23: 235 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, 2026Viewing235-2
Oct 21, 20262370
Oct 16, 2026237+43
Oct 15, 20261940
Oct 14, 2026194+22
Oct 13, 20261720
Oct 09, 2026172No prior observation