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

Institutional Holders (2014Q2)
Portfolio Summary: 193 Institutional holders with a total value of $2,057,224,390.
#
Manager Name
Shares
Value ($)
%
Options
Notes
1 WELLS FARGO & COMPANY/MN 2,133,767 174,814,000 8.50%
2 KORNITZER CAPITAL MANAGEMENT INC /KS 1,887,700 154,640,000 7.52%
3 RIVERBRIDGE PARTNERS LLC 1,470,057 120,427,000 5.85%
4 VANGUARD GROUP INC 1,318,703 108,027,000 5.25%
5 FRANKLIN RESOURCES INC 872,394 71,467,000 3.47%
6 WASATCH ADVISORS LP 802,947 65,777,000 3.20%
7 GILDER GAGNON HOWE & CO LLC 689,842 56,512,000 2.75%
8 Stephens Investment Management Group LLC 680,985 55,786,000 2.71%
9 BlackRock Institutional Trust Company, N.A. 582,531 47,721,000 2.32%
10 GW&K Investment Management, LLC 537,604 44,041,000 2.14%
11 NEW AMSTERDAM PARTNERS LLC/NY 522,548 42,807,000 2.08%
12 BlackRock Fund Advisors 504,460 41,325,000 2.01%
13 COLUMBIA PARTNERS L.L.C. INVESTMENT MANAGEMENT 501,445 41,078,000 2.00%
14 TAMRO Capital Partners LLC 475,807 38,978,000 1.89%
15 OppenheimerFunds, Inc. 469,619 38,471,000 1.87%
16 MASSACHUSETTS FINANCIAL SERVICES CO /MA/ 467,614 38,307,000 1.86%
17 Conestoga Capital Advisors, LLC 465,469 38,131,000 1.85%
18 AXIOM INVESTORS LLC /DE 460,180 37,698,000 1.83%
19 NEXT CENTURY GROWTH INVESTORS LLC 414,115 33,924,000 1.65%
20 TEACHERS ADVISORS, LLC 367,002 30,065,000 1.46%
21 Ranger Investment Management, L.P. 365,290 29,925,000 1.45%
22 STATE STREET CORP 341,724 27,993,000 1.36%
23 RUSSELL FRANK CO/ 324,308 26,568,000 1.29%
24 ROYAL BANK OF CANADA 317,359 25,998,000 1.26%
25 LOOMIS SAYLES & CO L P 284,121 23,276,000 1.13%
26 BLAIR WILLIAM & CO/IL 282,225 23,119,000 1.12%
27 NORTHERN TRUST CORP 281,229 23,039,000 1.12%
28 NEW YORK STATE COMMON RETIREMENT FUND 250,187 20,495,000 1.00%
29 BROWN CAPITAL MANAGEMENT LLC 243,669 19,961,000 0.97%
30 Calamos Advisors LLC 241,897 19,816,000 0.96%
31 DIMENSIONAL FUND ADVISORS LP 238,118 19,506,000 0.95%
32 Apex Capital Management 234,436 19,205,000 0.93%
33 ArrowMark Colorado Holdings LLC 216,125 17,705,000 0.86%
34 TCW GROUP INC 207,823 17,026,000 0.83%
35 AMERIPRISE FINANCIAL INC 194,102 15,902,000 0.77%
36 MANAGED ACCOUNT ADVISORS LLC 189,472 15,522,000 0.75%
37 Crestwood Capital Management, L.P. 188,000 15,401,000 0.75%
38 Artisan Partners Limited Partnership 185,655 15,209,000 0.74%
39 TIAA CREF INVESTMENT MANAGEMENT LLC 185,491 15,195,000 0.74%
40 ALLIANCEBERNSTEIN L.P. 183,338 15,019,000 0.73%
41 THORNBURG INVESTMENT MANAGEMENT INC 180,989 14,827,000 0.72%
42 Bank of New York Mellon Corp 179,899 14,736,000 0.72%
43 Cupps Capital Management, LLC 178,979 14,661,000 0.71%
44 Summit Creek Advisors LLC 173,600 14,221,000 0.69%
45 Nationwide Fund Advisors 170,170 13,940,000 0.68%
46 GENEVA CAPITAL MANAGEMENT LLC 148,903 12,198,000 0.59%
47 Capital Investment Services of America, Inc. 138,670 11,360,000 0.55%
48 GEODE CAPITAL MANAGEMENT, LLC 111,045 9,096,000 0.44%
49 Nichols Asset Management LLC 104,447 8,556,000 0.42%
50 EMERALD ADVISERS, LLC 103,973 8,517,000 0.41%
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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.