ALIGN TECHNOLOGY INC (ALGN) Stock Institutional Trading Activity


ALIGN TECHNOLOGY INC (ALGN) position changes reported by tracked institutional filers across multiple SEC 13F reporting periods. Based on recent SEC 13F filings (Q4 2025), investors with some of the largest reported share count changes include Disciplined Growth Investors, Bares Capital Management, Alapocas Investment Partners, Sequoia Financial Advisors, and Giverny Capital. Explore insights into buying and selling patterns, position changes, and investment conviction levels to understand institutional trading behavior and market dynamics.

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Portfolio quarterNameTypeQuantityRemainingReported stock balance
Q4 2019Viking Global InvestorsSell-424,109262,214$73,168
Q4 2019Disciplined Growth InvestorsBuy19,488948,136$264,568
Q4 2019Renaissance Technologies LLCBuy394,9482,610,848$728,531
Q4 2019Polen Capital ManagementBuy46,2672,826,782$788,785
Q3 2019ARK InvestSell-10,0981,739$315
Q3 2019Bares Capital ManagementBuy944,2401,049,513$189,878
Q3 2019Viking Global InvestorsSell-474,822686,323$124,170
Q3 2019Disciplined Growth InvestorsBuy18,564928,648$168,011
Q3 2019Renaissance Technologies LLCSell-321,7812,215,900$400,901
Q3 2019Polen Capital ManagementBuy177,1782,780,515$503,051
Q2 2019Bares Capital ManagementSell-377105,273$28,813
Q2 2019Sequoia Financial AdvisorsSell-31806$221
Q2 2019ARK InvestSell-8,57711,837$3,240
Q2 2019Disciplined Growth InvestorsSell-47,106910,084$249,090
Q2 2019Viking Global InvestorsSell-634,8451,161,145$317,805
Q2 2019Renaissance Technologies LLCBuy277,6812,537,681$694,563
Q2 2019Polen Capital ManagementBuy111,2912,603,337$712,533
Q1 2019ARK InvestBuy1,50020,414$5,804
Q1 2019Bares Capital ManagementBuy16,800105,650$30,039
Q1 2019Sequoia Financial AdvisorsBuy93837$238
Q1 2019Disciplined Growth InvestorsBuy708957,190$272,158
Q1 2019Viking Global InvestorsBuy1,234,8901,795,990$510,654
Q1 2019Renaissance Technologies LLCSell-259,4812,260,000$642,586
Q1 2019Polen Capital ManagementBuy778,7432,492,046$708,563
Q4 2018ARK InvestBuy6,93218,914$3,961
Q4 2018Bares Capital ManagementBuy88,85088,850$18,608
Q4 2018Viking Global InvestorsBuy18,568561,100$117,511
Q4 2018Disciplined Growth InvestorsBuy18,459956,482$200,316
Q4 2018Polen Capital ManagementSell-397,7941,713,303$358,817
Q4 2018Renaissance Technologies LLCSell-258,9002,519,481$527,655

Frequently asked questions about ALGN activity

  • Which institutional owners are buying ALGN?

    Institutional owners buying ALGN include investors who have either initiated new positions or increased their existing holdings based on recent SEC 13F filings. The activity table above highlights which funds added shares in the latest reporting periods and how their positions changed over time.

  • What does "buy" mean in ALGN activity?

    "Buy" means an investor increased their reported position in ALGN compared to the prior reporting period. This reflects growing exposure to ALIGN TECHNOLOGY INC (ALGN) rather than necessarily a brand-new position (though new positions also appear as buys when prior quantity was zero).

  • Is institutional interest in ALGN increasing?

    Institutional interest in ALGN can be assessed by comparing the number of tracked funds adding or increasing positions versus those trimming or exiting across the periods shown. A higher number of additions typically signals increasing participation among large filers, but it should be read alongside position sizes and the full table.