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

Institutional Holders (2014Q4)
Portfolio Summary: 191 Institutional holders with a total value of $1,752,262,107.
#
Manager Name
Shares
Value ($)
%
Options
Notes
1 WELLS FARGO & COMPANY/MN 1,956,211 131,380,000 7.50%
2 RIVERBRIDGE PARTNERS LLC 1,710,971 114,909,000 6.56%
3 BROWN CAPITAL MANAGEMENT LLC 1,623,366 109,025,000 6.22%
4 KORNITZER CAPITAL MANAGEMENT INC /KS 1,439,648 96,687,000 5.52%
5 FRANKLIN RESOURCES INC 1,402,200 94,172,000 5.37%
6 VANGUARD GROUP INC 1,335,941 89,722,000 5.12%
7 Ranger Investment Management, L.P. 820,470 55,103,000 3.14%
8 WASATCH ADVISORS LP 722,208 48,503,000 2.77%
9 GILDER GAGNON HOWE & CO LLC 701,628 47,121,000 2.69%
10 GW&K Investment Management, LLC 612,321 41,123,000 2.35%
11 Stephens Investment Management Group LLC 611,010 41,035,000 2.34%
12 BlackRock Institutional Trust Company, N.A. 585,719 39,337,000 2.24%
13 Conestoga Capital Advisors, LLC 581,970 39,085,000 2.23%
14 BlackRock Fund Advisors 575,613 38,658,000 2.21%
15 JANUS HENDERSON INVESTORS US LLC 543,866 36,526,000 2.08%
16 EAGLE ASSET MANAGEMENT INC 486,989 32,706,000 1.87%
17 NORTHERN TRUST CORP 462,205 31,042,000 1.77%
18 ArrowMark Colorado Holdings LLC 417,702 28,053,000 1.60%
19 BLAIR WILLIAM & CO/IL 414,686 27,850,000 1.59%
20 Crestwood Capital Management, L.P. 397,100 26,669,000 1.52%
21 STATE STREET CORP 356,591 23,945,000 1.37%
22 NEW YORK STATE COMMON RETIREMENT FUND 348,382 23,397,000 1.34%
23 TAMRO Capital Partners LLC 329,758 22,147,000 1.26%
24 TEACHERS ADVISORS, LLC 312,820 21,009,000 1.20%
25 ROYAL BANK OF CANADA 308,154 20,696,000 1.18%
26 Apex Capital Management 291,491 19,577,000 1.12%
27 LOOMIS SAYLES & CO L P 263,443 17,693,000 1.01%
28 DIMENSIONAL FUND ADVISORS LP 255,641 17,169,000 0.98%
29 THORNBURG INVESTMENT MANAGEMENT INC 248,245 16,672,000 0.95%
30 Summit Creek Advisors LLC 246,355 16,545,000 0.94%
31 RUSSELL FRANK CO/ 246,670 16,464,000 0.94%
32 MANAGED ACCOUNT ADVISORS LLC 217,518 14,609,000 0.83%
33 TIAA CREF INVESTMENT MANAGEMENT LLC 211,228 14,186,000 0.81%
34 Calamos Advisors LLC 206,259 13,852,000 0.79%
35 Artisan Partners Limited Partnership 206,114 13,843,000 0.79%
36 PRICE T ROWE ASSOCIATES INC /MD/ 172,915 11,613,000 0.66%
37 AMERIPRISE FINANCIAL INC 168,285 11,302,000 0.64%
38 THRIVENT FINANCIAL FOR LUTHERANS 168,062 11,287,000 0.64%
39 TCW GROUP INC 163,060 10,951,000 0.62%
40 Bank of New York Mellon Corp 159,985 10,744,000 0.61%
41 Capital Investment Services of America, Inc. 151,170 10,153,000 0.58%
42 OppenheimerFunds, Inc. 150,059 10,078,000 0.58%
43 TIVERTON ASSET MANAGEMENT LLC 150,000 10,075,000 0.57%
44 Nationwide Fund Advisors 144,590 9,711,000 0.55%
45 DEUTSCHE BANK AG\ 141,750 9,518,000 0.54%
46 MANUFACTURERS LIFE INSURANCE COMPANY, THE 138,893 9,328,000 0.53%
47 EMERALD ADVISERS, LLC 138,537 9,304,000 0.53%
48 JANUS HENDERSON GROUP PLC 132,449 8,895,000 0.51%
49 GEODE CAPITAL MANAGEMENT, LLC 126,529 8,497,000 0.48%
50 Nichols Asset Management LLC 124,183 8,340,000 0.48%
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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.