ALTR (ALTR) Institutional Ownership Changes & 13F Activity

ALTR. Institutional ownership data tracks hedge funds, asset managers, and other institutional investors based on recent SEC Form 13F filings. This page analyzes institutional buying and selling activity, new holdings, and sold-out positions among tracked filers. Notable filers include Mairs & Power Growth Fund, ARK Invest, Polen Capital Management, and Renaissance Technologies LLC.

Portfolio quarterNameTypeQuantityRemainingReported stock balance
Q1 2022Polen Capital ManagementSell-9,145144,236$9,289
Q4 2021ARK InvestSell-52,106213,576$16,514
Q4 2021Polen Capital ManagementBuy34,154153,381$11,859
Q4 2021Renaissance Technologies LLCSell-28,70034,400$2,660
Q3 2021ARK InvestSell-129,528265,682$18,316
Q3 2021Polen Capital ManagementBuy10,126119,227$8,220
Q3 2021Renaissance Technologies LLCBuy2,96563,100$4,350
Q2 2021Renaissance Technologies LLCBuy45,53560,135$4,148
Q2 2021ARK InvestBuy8,424395,210$27,258
Q2 2021Polen Capital ManagementBuy6,572109,101$7,525
Q1 2021ARK InvestBuy284,042386,786$24,201
Q1 2021Polen Capital ManagementBuy20,070102,529$6,415
Q4 2020ARK InvestBuy49,169102,744$5,978
Q4 2020Polen Capital ManagementBuy18,65082,459$4,797
Q3 2020Renaissance Technologies LLCSell-72,90014,600$613
Q3 2020Polen Capital ManagementBuy10,06463,809$2,679
Q3 2020ARK InvestBuy8,02053,575$2,249
Q2 2020Polen Capital ManagementBuy15,51753,745$2,136
Q2 2020ARK InvestBuy9,13945,555$1,811
Q1 2020Polen Capital ManagementBuy15,38238,228$1,013
Q1 2020ARK InvestBuy8,65836,416$965
Q4 2019Polen Capital ManagementBuy3,13822,846$820
Q4 2019ARK InvestSell-33527,758$997
Q3 2019Polen Capital ManagementBuy7,46619,708$682
Q3 2019ARK InvestSell-2,23428,093$973
Q2 2019Renaissance Technologies LLCBuy49,02487,500$3,534
Q2 2019ARK InvestBuy30,32730,327$1,225
Q2 2019Polen Capital ManagementBuy87812,242$494
Q1 2019Polen Capital ManagementBuy11,36411,364$418
Q1 2019Renaissance Technologies LLCSell-82438,476$1,416

Frequently asked questions about ALTR activity

  • Which institutional owners are buying ALTR?

    Institutional owners buying ALTR 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 ALTR activity?

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

  • Is institutional interest in ALTR increasing?

    Institutional interest in ALTR 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.

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