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Contract OI history

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Dec 18, 2026 EXPIRATION

ALGN $125.00 Put

ALGN261218P00125000

Latest saved OI506Oct 23, 2026
Last change0vs previous saved observation
Saved market days7Oct 09, 2026 onwards
Daily open interest Hover a point for its date and OI
ALGN $125.00 put open interest history 7 saved observations from 2026-10-09 to 2026-10-23. Exact values and changes are listed in the table below. 5062530 2026-10-09: 504 OI2026-10-13: 504 OI2026-10-14: 504 OI2026-10-15: 504 OI2026-10-16: 504 OI2026-10-21: 506 OI2026-10-23: 506 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, 2026Viewing5060
Oct 21, 2026506+2
Oct 16, 20265040
Oct 15, 20265040
Oct 14, 20265040
Oct 13, 20265040
Oct 09, 2026504No prior observation