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Proto Labs (PRLB) Institutional Ownership

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$81.61 +1.86 (+2.33%)
Closing price 09/11/2026 03:58 PM Eastern
Extended Trading
$81.97 +0.36 (+0.44%)
As of 09/11/2026 07:30 PM Eastern
Extended trading is trading that happens on electronic markets outside of regular trading hours. This is a fair market value extended hours price provided by Massive. Learn more.
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Institutional Ownership Changes (13F Filings) for Proto Labs (NYSE:PRLB)

Current
Institutional Ownership
Percentage
84.54%
Number of
Institutional Buyers
(last 12 months)
112
Total
Institutional Inflows
(last 12 months)
$752.65M
Number of
Institutional Sellers
(last 12 months)
80
Total
Institutional Outflows
(last 12 months)
$109.61M
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PRLB Institutional Buying and Selling by Quarter

Proto Labs Major Shareholders & Ownership History

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Reporting DateMajor Shareholder NameShares HeldMarket Value% of PortfolioQuarterly Change in SharesOwnership in CompanyDetails
9/9/2026 Tidal Investments LLC10,865$886K0.0%-30.2%0.045%
9/9/2026 WINTON GROUP Ltd3,537$288K0.0%-53.2%0.015%
9/9/2026 Engineers Gate Manager LP26,780$2.18M0.0%+84.7%0.112%
9/9/2026 Squarepoint Ops LLC16,439$1.34M0.0%-60.2%0.069%
8/27/2026 Corient Private Wealth LP12,427$1.01M0.0%+16.1%0.052%
8/26/2026 Amundi12,941$1.06M0.0%-8.1%0.054%
8/24/2026 California State Teachers Retirement System2,204,356$179.68M0.0%+9,497.9%9.216%
8/23/2026 Angeles Wealth Management LLC5,045$411K0.0%+12.4%0.021%
8/22/2026 Turner Financial Group Inc.4,843$395K0.4%N/A0.020%
8/20/2026 Susquehanna Fundamental Investments LLC33,760$2.75M0.1%+227.0%0.141%
8/19/2026 UBS AM a distinct business unit of UBS ASSET MANAGEMENT AMERICAS LLC65,044$5.30M0.0%-1.1%0.272%
8/19/2026 Hsbc Holdings PLC24,699$2.01M0.0%+60.6%0.103%
8/18/2026Jefferies Financial Group Inc.10,710$873K0.0%N/A0.045%
8/18/2026 Public Employees Retirement System of Ohio451$37K0.0%N/A0.002%
8/17/2026 Corient Private Wealth LP10,691$871K0.0%N/A0.045%
8/17/2026 Bank of America Corp DE125,997$10.27M0.0%N/A0.527%
8/15/2026 American Capital Management Inc.619,845$50.52M2.3%N/A2.591%
8/15/2026 Jupiter Topco LLC12,216$996K0.0%N/A0.051%
8/14/2026 Hsbc Holdings PLC24,699$2.01M0.0%N/A0.103%
8/14/2026 Canada Pension Plan Investment Board9,500$774K0.0%N/A0.040%
8/14/2026 Legal & General Group Plc56,739$4.63M0.0%N/A0.237%
8/14/2026 The Manufacturers Life Insurance Company9,335$761K0.0%N/A0.039%
8/14/2026 S Squared Technology LLC288,120$23.48M0.0%N/A1.205%
8/14/2026 Algert Global LLC36,695$2.99M0.0%+480.2%0.153%
8/13/2026 Connor Clark & Lunn Investment Management Ltd.120,473$9.82M0.0%N/A0.504%
8/7/2026 BlackRock Inc.3,896,222$317.58M0.0%N/A16.287%
8/7/2026 Deutsche Bank AG25,119$2.05M0.0%N/A0.105%
8/7/2026 Rice Hall James & Associates LLC108,964$8.88M0.4%N/A0.455%
8/6/2026 Bank of New York Mellon Corp143,782$11.72M0.0%N/A0.601%
8/6/2026 State of Wyoming16,370$1.33M0.1%N/A0.068%
8/6/2026 GSA Capital Partners LLP10,603$864K0.1%N/A0.044%
8/5/2026USA Financial Formulas917$52K0.0%N/A0.004%
8/3/2026 Summit Global Investments3,574$291K0.0%N/A0.015%
7/8/2026 Assenagon Asset Management S.A.12,238$998K0.0%-73.8%0.051%
6/18/2026 Pacer Advisors Inc.5,653$322K0.0%+74.2%0.024%
5/19/2026 Bank of America Corp DE129,113$7.36M0.0%+38.3%0.543%
5/19/2026 Edgestream Partners L.P.19,015$1.08M0.0%N/A0.080%
5/18/2026 Amundi14,082$803K0.0%+16.9%0.059%
5/18/2026 California State Teachers Retirement System22,967$1.31M0.0%-0.8%0.097%
5/18/2026 Royal Bank of Canada13,059$745K0.0%-21.5%0.055%
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5/18/2026 Rubric Capital Management LP486,400$27.74M0.3%-56.7%2.045%
5/16/2026 American Capital Management Inc.627,705$35.79M1.9%-0.6%2.638%
5/16/2026 The Manufacturers Life Insurance Company9,537$544K0.0%-4.1%0.040%
5/16/2026 Quantinno Capital Management LP27,716$1.58M0.0%+98.9%0.116%
5/16/2026 Polar Asset Management Partners Inc.60,369$3.44M0.1%-27.6%0.254%
5/16/2026 Lazard Asset Management LLC99,333$5.66M0.0%+31.4%0.418%
5/15/2026 Rice Hall James & Associates LLC113,589$6.48M0.4%-0.9%0.477%
5/14/2026 Renaissance Technologies LLC520,251$29.67M0.0%+5.4%2.187%
5/14/2026 Arrowstreet Capital Limited Partnership463,780$26.45M0.0%+0.7%1.949%
5/14/2026 Sei Investments Co.8,819$503K0.0%N/A0.037%
5/14/2026 State of Wyoming3,436$196K0.0%-52.6%0.014%
5/13/2026 First Trust Advisors LP92,870$5.30M0.0%-12.3%0.390%
5/8/2026 Summit Global Investments12,720$725K0.0%+36.0%0.053%
5/7/2026 Dimensional Fund Advisors LP1,272,356$72.55M0.0%-0.3%5.347%
5/6/2026 Angeles Wealth Management LLC4,490$256K0.0%N/A0.019%
5/6/2026 Independent Financial Group LLC3,965$226K0.0%N/A0.017%
5/5/2026 Bastion Asset Management Inc.28,270$1.61M0.5%N/A0.119%
5/5/2026 Bank of New York Mellon Corp139,917$7.98M0.0%-2.2%0.588%
5/5/2026 Illinois Municipal Retirement Fund12,871$734K0.0%+2.4%0.054%
5/5/2026 Hillsdale Investment Management Inc.174,384$9.94M0.3%+3.6%0.733%
5/4/2026 Principal Financial Group Inc.133,613$7.62M0.0%-2.2%0.562%
5/1/2026 Fifth Third Bancorp5,129$292K0.0%+3,537.6%0.022%
4/30/2026 Hsbc Holdings PLC15,378$867K0.0%+12.9%0.065%
4/27/2026 New York State Teachers Retirement System11,536$658K0.0%-50.9%0.048%
4/25/2026 Strs Ohio13,200$753K0.0%-5.7%0.055%
4/22/2026 Janney Montgomery Scott LLC7,233$412K0.0%-7.9%0.030%
4/22/2026 Pictet Asset Management Holding SA3,774$215K0.0%N/A0.016%
4/22/2026 Sterling Capital Management LLC789$45K0.0%-42.5%0.003%
4/21/2026 Louisiana State Employees Retirement System10,500$599K0.0%N/A0.044%
4/20/2026 Assenagon Asset Management S.A.46,776$2.67M0.0%+68.6%0.197%
4/16/2026 SG Americas Securities LLC6,429$367K0.0%-78.7%0.027%
4/16/2026 Diversified Trust Co11,795$673K0.0%+12.4%0.050%
3/20/2026 Hsbc Holdings PLC13,624$694K0.0%+45.4%0.057%
3/9/2026 Auto Owners Insurance Co227,655$11.52M0.0%+4,959.0%0.958%
2/24/2026 Pacer Advisors Inc.3,246$164K0.0%-60.5%0.014%
2/19/2026 Invesco Ltd.107,698$5.45M0.0%+5.2%0.455%
2/18/2026 Summit Global Investments9,350$473K0.0%N/A0.039%
2/18/2026 State of Tennessee Department of Treasury17,728$933K0.0%+82.1%0.075%
2/18/2026 Empowered Funds LLC112,876$5.71M0.0%+4.0%0.477%
2/18/2026 Zacks Investment Management6,416$325K0.0%N/A0.027%
2/18/2026 Millennium Management LLC101,532$5.14M0.0%-2.5%0.429%
2/18/2026 Gotham Asset Management LLC11,170$565K0.0%-16.3%0.047%
2/18/2026 Bridgeway Capital Management LLC113,876$5.76M0.1%+4.0%0.481%
2/17/2026 Guggenheim Capital LLC9,826$497K0.0%N/A0.041%
2/17/2026 American Capital Management Inc.631,311$31.94M1.4%+126.0%2.666%
2/17/2026 Polar Asset Management Partners Inc.83,402$4.22M0.1%-35.1%0.352%
2/17/2026 AQR Capital Management LLC51,260$2.59M0.0%+61.0%0.216%
2/17/2026 Lazard Asset Management LLC75,574$3.82M0.0%-16.6%0.319%
2/17/2026 Trexquant Investment LP27,627$1.40M0.0%N/A0.117%
2/17/2026 Amundi12,051$610K0.0%+29.6%0.051%
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2/17/2026 Price T Rowe Associates Inc. MD28,034$1.42M0.0%+2.9%0.118%
2/17/2026 State of Wisconsin Investment Board13,259$671K0.0%+42.1%0.056%
2/17/2026 ExodusPoint Capital Management LP7,247$367K0.0%+56.0%0.031%
2/17/2026 Rice Hall James & Associates LLC114,563$5.80M0.3%-6.1%0.484%
2/16/2026 Truvestments Capital LLC11,106$562K0.1%+18.0%0.047%
2/16/2026 Verition Fund Management LLC14,600$739K0.0%-7.1%0.062%
2/16/2026 Panagora Asset Management Inc.175,585$8.88M0.0%+4.3%0.741%
2/16/2026 S Squared Technology LLC306,103$15.49M6.0%-1.6%1.293%
2/16/2026 Mariner LLC4,527$229K0.0%N/A0.019%
2/16/2026 Barclays PLC38,149$1.93M0.0%+11.4%0.161%


PRLB Institutional Ownership - Frequently Asked Questions

During the previous two years, 205 institutional investors and hedge funds held shares of Proto Labs. The most heavily invested institutionals were BlackRock Inc. ($317.58M), California State Teachers Retirement System ($179.68M), Vanguard Group Inc. ($134.88M), Disciplined Growth Investors Inc. MN ($129.70M), Dimensional Fund Advisors LP ($72.55M), State Street Corp ($55.05M), and American Capital Management Inc. ($50.52M).Learn more on Proto Labs' institutional investors.

84.54% of Proto Labs' stock is owned by institutional investors. Learn more on PRLB's institutional investor holdings.

Of the 169 institutional investors that purchased Proto Labs' stock in the last 24 months, the following investors and hedge funds have bought the highest volume of shares: BlackRock Inc. ($3.90M), California State Teachers Retirement System ($2.18M), American Capital Management Inc. ($1.20M), Rubric Capital Management LP ($1.01M), Pacer Advisors Inc. ($721.97K), Wellington Management Group LLP ($374.79K), and First Trust Advisors LP ($331.18K).

Institutional investors have bought a total of 10,115,413 shares in the last 24 months. This purchase volume represents approximately $752.65M in transactions.

Of the 80 institutional investors that sold Proto Labs' stock in the last 24 months, the following investors and hedge funds have sold the highest volume of shares: Rubric Capital Management LP ($636.94K), Disciplined Growth Investors Inc. MN ($129.64K), Deutsche Bank AG ($114.47K), Vanguard Group Inc. ($106.64K), Pacer Advisors Inc. ($102.76K), State Street Corp ($87.09K), and Assenagon Asset Management S.A. ($72.63K).

Institutional investors have sold a total of 2,040,671 shares in the last 24 months. This volume of shares sold represents approximately $109.61M in transactions.


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Institutional ownership data for NYSE:PRLB is compiled from quarterly 13F filings submitted to the U.S. Securities and Exchange Commission (SEC), with the most recent received on 9/9/2026. New 13F filings are added each quarter as they're published.
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