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Proto Labs (PRLB) Institutional Ownership

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$98.24 +3.88 (+4.11%)
Closing price 10/2/2026 03:59 PM Eastern
Extended Trading
$98.20 -0.04 (-0.04%)
As of 10/2/2026 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)
110
Total
Institutional Inflows
(last 12 months)
$574.59M
Number of
Institutional Sellers
(last 12 months)
79
Total
Institutional Outflows
(last 12 months)
$109.53M
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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
9/9/2026Tidal Investments LLC10,865$886K0.0%-30.2%0.045%
9/9/2026WINTON GROUP Ltd3,537$288K0.0%-53.2%0.015%
9/9/2026Engineers Gate Manager LP26,780$2.18M0.0%+84.7%0.112%
9/9/2026Squarepoint Ops LLC16,439$1.34M0.0%-60.2%0.069%
8/27/2026Corient Private Wealth LP12,427$1.01M0.0%+16.1%0.052%
8/26/2026Amundi12,941$1.06M0.0%-8.1%0.054%
8/23/2026Angeles Wealth Management LLC5,045$411K0.0%+12.4%0.021%
8/22/2026Turner Financial Group Inc.4,843$395K0.4%N/A0.020%
8/20/2026Susquehanna Fundamental Investments LLC33,760$2.75M0.1%+227.0%0.141%
8/19/2026UBS AM a distinct business unit of UBS ASSET MANAGEMENT AMERICAS LLC65,044$5.30M0.0%-1.1%0.272%
8/19/2026Hsbc Holdings PLC24,699$2.01M0.0%+60.6%0.103%
8/18/2026Jefferies Financial Group Inc.10,710$873K0.0%N/A0.045%
8/18/2026Public Employees Retirement System of Ohio451$37K0.0%N/A0.002%
8/17/2026Corient Private Wealth LP10,691$871K0.0%N/A0.045%
8/17/2026Bank of America Corp DE125,997$10.27M0.0%N/A0.527%
8/15/2026American Capital Management Inc.619,845$50.52M2.3%N/A2.591%
8/15/2026Jupiter Topco LLC12,216$996K0.0%N/A0.051%
8/14/2026Hsbc Holdings PLC24,699$2.01M0.0%N/A0.103%
8/14/2026Canada Pension Plan Investment Board9,500$774K0.0%N/A0.040%
8/14/2026Legal & General Group Plc56,739$4.63M0.0%N/A0.237%
8/14/2026The Manufacturers Life Insurance Company9,335$761K0.0%N/A0.039%
8/14/2026S Squared Technology LLC288,120$23.48M0.0%N/A1.205%
8/14/2026Algert Global LLC36,695$2.99M0.0%+480.2%0.153%
8/13/2026Connor Clark & Lunn Investment Management Ltd.120,473$9.82M0.0%N/A0.504%
8/7/2026BlackRock Inc.3,896,222$317.58M0.0%N/A16.287%
8/7/2026Deutsche Bank AG25,119$2.05M0.0%N/A0.105%
8/7/2026Rice Hall James & Associates LLC108,964$8.88M0.4%N/A0.455%
8/6/2026Bank of New York Mellon Corp143,782$11.72M0.0%N/A0.601%
8/6/2026State of Wyoming16,370$1.33M0.1%N/A0.068%
8/6/2026GSA Capital Partners LLP10,603$864K0.1%N/A0.044%
8/5/2026USA Financial Formulas917$52K0.0%N/A0.004%
8/3/2026Summit Global Investments3,574$291K0.0%N/A0.015%
7/8/2026Assenagon Asset Management S.A.12,238$998K0.0%-73.8%0.051%
6/18/2026Pacer Advisors Inc.5,653$322K0.0%+74.2%0.024%
5/19/2026Bank of America Corp DE129,113$7.36M0.0%+38.3%0.543%
5/19/2026Edgestream Partners L.P.19,015$1.08M0.0%N/A0.080%
5/18/2026Amundi14,082$803K0.0%+16.9%0.059%
5/18/2026California State Teachers Retirement System22,967$1.31M0.0%-0.8%0.097%
5/18/2026Royal Bank of Canada13,059$745K0.0%-21.5%0.055%
5/18/2026Rubric Capital Management LP486,400$27.74M0.3%-56.7%2.045%
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5/16/2026American Capital Management Inc.627,705$35.79M1.9%-0.6%2.638%
5/16/2026The Manufacturers Life Insurance Company9,537$544K0.0%-4.1%0.040%
5/16/2026Quantinno Capital Management LP27,716$1.58M0.0%+98.9%0.116%
5/16/2026Polar Asset Management Partners Inc.60,369$3.44M0.1%-27.6%0.254%
5/16/2026Lazard Asset Management LLC99,333$5.66M0.0%+31.4%0.418%
5/15/2026Rice Hall James & Associates LLC113,589$6.48M0.4%-0.9%0.477%
5/14/2026Renaissance Technologies LLC520,251$29.67M0.0%+5.4%2.187%
5/14/2026Arrowstreet Capital Limited Partnership463,780$26.45M0.0%+0.7%1.949%
5/14/2026Sei Investments Co.8,819$503K0.0%N/A0.037%
5/14/2026State of Wyoming3,436$196K0.0%-52.6%0.014%
5/13/2026First Trust Advisors LP92,870$5.30M0.0%-12.3%0.390%
5/8/2026Summit Global Investments12,720$725K0.0%+36.0%0.053%
5/7/2026Dimensional Fund Advisors LP1,272,356$72.55M0.0%-0.3%5.347%
5/6/2026Angeles Wealth Management LLC4,490$256K0.0%N/A0.019%
5/6/2026Independent Financial Group LLC3,965$226K0.0%N/A0.017%
5/5/2026Bastion Asset Management Inc.28,270$1.61M0.5%N/A0.119%
5/5/2026Bank of New York Mellon Corp139,917$7.98M0.0%-2.2%0.588%
5/5/2026Illinois Municipal Retirement Fund12,871$734K0.0%+2.4%0.054%
5/5/2026Hillsdale Investment Management Inc.174,384$9.94M0.3%+3.6%0.733%
5/4/2026Principal Financial Group Inc.133,613$7.62M0.0%-2.2%0.562%
5/1/2026Fifth Third Bancorp5,129$292K0.0%+3,537.6%0.022%
4/30/2026Hsbc Holdings PLC15,378$867K0.0%+12.9%0.065%
4/27/2026New York State Teachers Retirement System11,536$658K0.0%-50.9%0.048%
4/25/2026Strs Ohio13,200$753K0.0%-5.7%0.055%
4/22/2026Janney Montgomery Scott LLC7,233$412K0.0%-7.9%0.030%
4/22/2026Pictet Asset Management Holding SA3,774$215K0.0%N/A0.016%
4/22/2026Sterling Capital Management LLC789$45K0.0%-42.5%0.003%
4/21/2026Louisiana State Employees Retirement System10,500$599K0.0%N/A0.044%
4/20/2026Assenagon Asset Management S.A.46,776$2.67M0.0%+68.6%0.197%
4/16/2026SG Americas Securities LLC6,429$367K0.0%-78.7%0.027%
4/16/2026Diversified Trust Co11,795$673K0.0%+12.4%0.050%
3/20/2026Hsbc Holdings PLC13,624$694K0.0%+45.4%0.057%
3/9/2026Auto Owners Insurance Co227,655$11.52M0.0%+4,959.0%0.958%
2/24/2026Pacer Advisors Inc.3,246$164K0.0%-60.5%0.014%
2/19/2026Invesco Ltd.107,698$5.45M0.0%+5.2%0.455%
2/18/2026Summit Global Investments9,350$473K0.0%N/A0.039%
2/18/2026State of Tennessee Department of Treasury17,728$933K0.0%+82.1%0.075%
2/18/2026Empowered Funds LLC112,876$5.71M0.0%+4.0%0.477%
2/18/2026Zacks Investment Management6,416$325K0.0%N/A0.027%
2/18/2026Millennium Management LLC101,532$5.14M0.0%-2.5%0.429%
2/18/2026Gotham Asset Management LLC11,170$565K0.0%-16.3%0.047%
2/18/2026Bridgeway Capital Management LLC113,876$5.76M0.1%+4.0%0.481%
2/17/2026Guggenheim Capital LLC9,826$497K0.0%N/A0.041%
2/17/2026American Capital Management Inc.631,311$31.94M1.4%+126.0%2.666%
2/17/2026Polar Asset Management Partners Inc.83,402$4.22M0.1%-35.1%0.352%
2/17/2026AQR Capital Management LLC51,260$2.59M0.0%+61.0%0.216%
2/17/2026Lazard Asset Management LLC75,574$3.82M0.0%-16.6%0.319%
2/17/2026Trexquant Investment LP27,627$1.40M0.0%N/A0.117%
2/17/2026Amundi12,051$610K0.0%+29.6%0.051%
2/17/2026Price T Rowe Associates Inc. MD28,034$1.42M0.0%+2.9%0.118%
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2/17/2026State of Wisconsin Investment Board13,259$671K0.0%+42.1%0.056%
2/17/2026ExodusPoint Capital Management LP7,247$367K0.0%+56.0%0.031%
2/17/2026Rice Hall James & Associates LLC114,563$5.80M0.3%-6.1%0.484%
2/16/2026Truvestments Capital LLC11,106$562K0.1%+18.0%0.047%
2/16/2026Verition Fund Management LLC14,600$739K0.0%-7.1%0.062%
2/16/2026Panagora Asset Management Inc.175,585$8.88M0.0%+4.3%0.741%
2/16/2026S Squared Technology LLC306,103$15.49M6.0%-1.6%1.293%
2/16/2026Mariner LLC4,527$229K0.0%N/A0.019%
2/16/2026Barclays PLC38,149$1.93M0.0%+11.4%0.161%
2/13/2026The Manufacturers Life Insurance Company 9,942$503K0.0%-6.9%0.042%


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), Vanguard Group Inc. ($134.88M), Disciplined Growth Investors Inc. MN ($129.70M), Dimensional Fund Advisors LP ($72.55M), State Street Corp ($55.05M), American Capital Management Inc. ($50.52M), and Renaissance Technologies LLC ($29.67M).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 168 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), American Capital Management Inc. ($1.20M), Rubric Capital Management LP ($1.01M), Pacer Advisors Inc. ($721.97K), Wellington Management Group LLP ($374.79K), First Trust Advisors LP ($331.18K), and S Squared Technology LLC ($307.22K).

Institutional investors have bought a total of 7,929,924 shares in the last 24 months. This purchase volume represents approximately $574.59M in transactions.

Of the 79 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 2,038,558 shares in the last 24 months. This volume of shares sold represents approximately $109.53M in transactions.


Related Companies

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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