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PROTO LABS INC
PROTO LABS INC. Institutional holdings reported to the SEC.

Institutional Holders (2015Q2)
Portfolio Summary: 194 Institutional holders with a total value of $1,700,695,432.
#
Manager Name
Shares
Value ($)
%
Options
Notes
1 BROWN CAPITAL MANAGEMENT LLC 1,994,664 134,600,000 7.91%
2 RIVERBRIDGE PARTNERS LLC 1,639,588 110,639,000 6.51%
3 VANGUARD GROUP INC 1,516,257 102,317,000 6.02%
4 JANUS HENDERSON INVESTORS US LLC 973,416 65,686,000 3.86%
5 WELLS FARGO & COMPANY/MN 962,694 64,962,000 3.82%
6 Ranger Investment Management, L.P. 916,705 61,859,000 3.64%
7 ArrowMark Colorado Holdings LLC 766,345 51,713,000 3.04%
8 TimesSquare Capital Management, LLC 744,300 50,225,000 2.95%
9 BLAIR WILLIAM & CO/IL 700,223 47,250,000 2.78%
10 WASATCH ADVISORS LP 692,359 46,720,000 2.75%
11 KORNITZER CAPITAL MANAGEMENT INC /KS 641,950 43,319,000 2.55%
12 GW&K Investment Management, LLC 612,831 41,354,000 2.43%
13 BlackRock Fund Advisors 560,132 37,798,000 2.22%
14 BlackRock Institutional Trust Company, N.A. 557,066 37,591,000 2.21%
15 Conestoga Capital Advisors, LLC 555,905 37,512,000 2.21%
16 Stephens Investment Management Group LLC 540,309 36,460,000 2.14%
17 EAGLE ASSET MANAGEMENT INC 509,452 34,377,000 2.02%
18 FRANKLIN RESOURCES INC 411,853 27,791,000 1.63%
19 NEW YORK STATE COMMON RETIREMENT FUND 401,800 27,113,000 1.59%
20 STATE STREET CORP 370,479 24,997,000 1.47%
21 Apex Capital Management 361,847 24,417,000 1.44%
22 LORD, ABBETT & CO. LLC 358,174 24,170,000 1.42%
23 SUSQUEHANNA INTERNATIONAL GROUP, LLP 344,300 23,233,000 1.37% Put
24 PRICE T ROWE ASSOCIATES INC /MD/ 337,296 22,761,000 1.34%
25 LOOMIS SAYLES & CO L P 331,071 22,341,000 1.31%
26 NORTHERN TRUST CORP 328,391 22,160,000 1.30%
27 DIMENSIONAL FUND ADVISORS LP 321,774 21,713,000 1.28%
28 ROYAL BANK OF CANADA 277,478 18,722,000 1.10%
29 TAMRO Capital Partners LLC 274,238 18,506,000 1.09%
30 RUSSELL FRANK CO/ 259,757 17,528,000 1.03%
31 FRED ALGER MANAGEMENT, LLC 254,454 17,171,000 1.01%
32 MANAGED ACCOUNT ADVISORS LLC 239,895 16,188,000 0.95%
33 Summit Creek Advisors LLC 228,965 15,451,000 0.91%
34 TIVERTON ASSET MANAGEMENT LLC 225,000 15,183,000 0.89%
35 Polar Capital LLP 199,081 13,433,000 0.79%
36 AMERIPRISE FINANCIAL INC 194,533 13,127,000 0.77%
37 THRIVENT FINANCIAL FOR LUTHERANS 170,212 11,486,000 0.68%
38 GILDER GAGNON HOWE & CO LLC 169,635 11,447,000 0.67%
39 Artisan Partners Limited Partnership 169,154 11,415,000 0.67%
40 JANUS HENDERSON GROUP PLC 166,830 11,258,000 0.66%
41 Capital Investment Services of America, Inc. 165,015 11,135,000 0.65%
42 SUSQUEHANNA INTERNATIONAL GROUP, LLP 160,100 10,804,000 0.64% Call
43 DEUTSCHE BANK AG\ 159,249 10,744,000 0.63%
44 Bank of New York Mellon Corp 153,889 10,385,000 0.61%
45 GEODE CAPITAL MANAGEMENT, LLC 140,315 9,468,000 0.56%
46 MANUFACTURERS LIFE INSURANCE COMPANY, THE 138,932 9,376,000 0.55%
47 TIAA CREF INVESTMENT MANAGEMENT LLC 137,796 9,298,000 0.55%
48 Nichols Asset Management LLC 133,042 8,978,000 0.53%
49 Quantum Capital Management, LLC / NJ 124,093 8,374,000 0.49%
50 Nationwide Fund Advisors 111,855 7,548,000 0.44%
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From 2023-01-03 onward, the SEC requires values to be reported in nearest dollars. Earlier filings reported values in thousands; therefore, positions shown as $0 in older filings may represent actual values between $0–$999.