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Proto Labs (PRLB) Institutional Ownership

Proto Labs logo
$79.48 +0.69 (+0.88%)
As of 08/21/2026 03:58 PM Eastern
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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)
132
Total
Institutional Inflows
(last 12 months)
$800.67M
Number of
Institutional Sellers
(last 12 months)
76
Total
Institutional Outflows
(last 12 months)
$106.80M
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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
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%
8/18/2026 North Star Asset Management Inc.346,719$31.46M1.2%N/A1.449%
8/18/2026 Dearborn Partners LLC87,008$7.90M0.4%N/A0.364%
8/18/2026 Brooks Moore & Associates Inc.47,455$4.31M1.9%N/A0.198%
8/18/2026 FSA Advisors Inc.4,309$391K0.2%N/A0.018%
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%
8/18/2026 MASTERINVEST Kapitalanlage GmbH71,977$6.53M0.6%N/A0.301%
8/17/2026 XXEC Inc.311,607$27.56M0.0%+433.6%1.303%
8/17/2026 Parvin Asset Management LLC6,050$549K0.4%N/A0.025%
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%
8/17/2026 Birmingham Capital Management Co. Inc. AL20,200$1.83M0.7%N/A0.084%
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 Ancora Advisors LLC46,925$4.26M0.1%N/A0.196%
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 Company 9,335$761K0.0%N/A0.039%
8/14/2026 Kelly Lawrence W & Associates Inc. CA5,910$536K0.1%N/A0.025%
8/14/2026 S Squared Technology LLC288,120$23.48B7.3%N/A1.205%
8/14/2026 Dearborn Partners LLC217,223$22.30M1.2%N/A0.908%
8/14/2026 Algert Global LLC36,695$2.99M0.0%+480.2%0.153%
8/13/2026 Covington Investment Advisors Inc.61,907$5.62M0.7%N/A0.259%
8/13/2026 Barbara Oil Co.15,000$1.36M0.5%N/A0.063%
8/13/2026 Connor Clark & Lunn Investment Management Ltd.120,473$9.82M0.0%N/A0.504%
8/13/2026 Elefante Mark B58,434$5.30M2.3%N/A0.244%
8/13/2026 First Nebraska Trust Co6,009$545K0.0%N/A0.025%
8/12/2026 Kirtland Hills Capital Management LLC4,502$408K0.1%N/A0.019%
8/12/2026 Compass Financial Management LLC1,627$156K0.0%N/A0.007%
8/12/2026 Alta Advisers Ltd6,820$619K0.1%N/A0.029%
8/12/2026 XXEC Inc.1,261,547$111.46B55.7%+2,060.4%5.274%
8/11/2026 Notis McConarty Edward61,390$5.57M2.4%N/A0.257%
8/11/2026 Somerville Kurt F91,953$8.34M2.0%N/A0.384%
8/11/2026 Puzo Michael J91,512$8.30M2.1%N/A0.383%
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8/10/2026 Great Lakes Advisors LLC73,817$6.70M0.1%N/A0.309%
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%
5/18/2026California 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%
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%
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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%


PRLB Institutional Ownership - Frequently Asked Questions

During the previous two years, 223 institutional investors and hedge funds held shares of Proto Labs. The most heavily invested institutionals were S Squared Technology LLC ($23.48B), 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), 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 188 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), XXEC Inc. ($1.46M), American Capital Management Inc. ($1.20M), Rubric Capital Management LP ($1.01M), Pacer Advisors Inc. ($721.97K), Wellington Management Group LLP ($374.79K), and North Star Asset Management Inc. ($346.72K).

Institutional investors have bought a total of 10,705,676 shares in the last 24 months. This purchase volume represents approximately $800.67M in transactions.

Of the 76 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 2,006,453 shares in the last 24 months. This volume of shares sold represents approximately $106.80M 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 8/23/2026. New 13F filings are added each quarter as they're published.
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