PROTO LABS INC (PRLB) Institutional Ownership Changes & 13F Activity

PROTO LABS INC (PRLB). 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 Disciplined Growth Investors, Polen Capital Management, Renaissance Technologies LLC, ARK Invest, and Mairs & Power Growth Fund.

Portfolio quarterNameTypeQuantityRemainingReported stock balance
Q4 2023Renaissance Technologies LLCBuy13,500289,600$11,283
Q4 2023ARK InvestSell-1,105178,345$6,948,321
Q3 2023Renaissance Technologies LLCBuy74,184276,100$7,289
Q3 2023ARK InvestSell-45,599179,450$4,737,480
Q3 2023Disciplined Growth InvestorsBuy18,2821,764,397$46,580,081
Q2 2023Disciplined Growth InvestorsSell-250,0091,746,115$61,044,180
Q2 2023Renaissance Technologies LLCBuy51,416201,916$7,059
Q2 2023ARK InvestBuy1,127225,049$7,867,713
Q1 2023ARK InvestSell-135,416223,922$7,423,014
Q1 2023Disciplined Growth InvestorsSell-125,7671,996,124$66,171,511
Q1 2023Renaissance Technologies LLCBuy25,800150,500$4,989
Q4 2022ARK InvestSell-203,740359,338$9,173,899
Q4 2022Disciplined Growth InvestorsBuy184,2782,121,891$54,171,877
Q4 2022Mairs & Power Growth FundSell-55,26321,572$550,733
Q4 2022Renaissance Technologies LLCSell-13,700124,700$3,184
Q3 2022Renaissance Technologies LLCBuy91,200138,400$5,042
Q3 2022ARK InvestSell-66,261563,078$20,513
Q3 2022Disciplined Growth InvestorsBuy60,6671,937,613$70,587
Q3 2022Mairs & Power Growth FundSell-5,56876,835$2,799
Q2 2022Renaissance Technologies LLCBuy43,30047,200$2,258
Q2 2022ARK InvestSell-35,006629,339$30,328
Q2 2022Disciplined Growth InvestorsBuy15,9701,876,946$89,793
Q2 2022Mairs & Power Growth FundSell-8,79582,403$3,942
Q1 2022Renaissance Technologies LLCSell-198,4003,900$206
Q1 2022Disciplined Growth InvestorsBuy69,0431,860,976$98,446
Q1 2022ARK InvestSell-52,302664,345$35,144
Q1 2022Mairs & Power Growth FundSell-22,21391,198$4,824
Q4 2021ARK InvestSell-1,902,676716,647$36,800
Q4 2021Disciplined Growth InvestorsBuy609,7201,791,933$92,016
Q4 2021Mairs & Power Growth FundSell-70,187113,411$5,824

Frequently asked questions about PRLB activity

  • Which institutional owners are buying PRLB?

    Institutional owners buying PRLB 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 PRLB activity?

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

  • Is institutional interest in PRLB increasing?

    Institutional interest in PRLB 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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