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

Institutional Holders (2015Q1)
Portfolio Summary: 191 Institutional holders with a total value of $1,818,719,830.
#
Manager Name
Shares
Value ($)
%
Options
Notes
1 BROWN CAPITAL MANAGEMENT LLC 1,995,114 139,658,000 7.68%
2 RIVERBRIDGE PARTNERS LLC 1,751,937 122,636,000 6.74%
3 WELLS FARGO & COMPANY/MN 1,668,265 116,779,000 6.42%
4 VANGUARD GROUP INC 1,464,216 102,495,000 5.64%
5 KORNITZER CAPITAL MANAGEMENT INC /KS 1,125,640 78,795,000 4.33%
6 JANUS HENDERSON INVESTORS US LLC 957,604 67,032,000 3.69%
7 Ranger Investment Management, L.P. 829,730 58,081,000 3.19%
8 WASATCH ADVISORS LP 707,571 49,530,000 2.72%
9 FRANKLIN RESOURCES INC 625,342 43,774,000 2.41%
10 GW&K Investment Management, LLC 617,774 43,244,000 2.38%
11 BlackRock Institutional Trust Company, N.A. 587,549 41,128,000 2.26%
12 BlackRock Fund Advisors 581,822 40,728,000 2.24%
13 Conestoga Capital Advisors, LLC 565,250 39,567,000 2.18%
14 TimesSquare Capital Management, LLC 544,600 38,122,000 2.10%
15 Stephens Investment Management Group LLC 522,819 36,597,000 2.01%
16 ArrowMark Colorado Holdings LLC 480,588 33,641,000 1.85%
17 EAGLE ASSET MANAGEMENT INC 479,304 33,551,000 1.84%
18 NORTHERN TRUST CORP 463,562 32,449,000 1.78%
19 GILDER GAGNON HOWE & CO LLC 415,231 29,066,000 1.60%
20 BLAIR WILLIAM & CO/IL 380,878 26,661,000 1.47%
21 NEW YORK STATE COMMON RETIREMENT FUND 377,870 26,451,000 1.45%
22 Crestwood Capital Management, L.P. 374,400 26,208,000 1.44%
23 STATE STREET CORP 363,189 25,423,000 1.40%
24 Apex Capital Management 334,511 23,416,000 1.29%
25 PRICE T ROWE ASSOCIATES INC /MD/ 329,330 23,053,000 1.27%
26 TAMRO Capital Partners LLC 324,315 22,702,000 1.25%
27 LOOMIS SAYLES & CO L P 319,211 22,344,000 1.23%
28 ROYAL BANK OF CANADA 304,053 21,284,000 1.17%
29 DIMENSIONAL FUND ADVISORS LP 275,884 19,312,000 1.06%
30 MANAGED ACCOUNT ADVISORS LLC 245,461 17,182,000 0.94%
31 THORNBURG INVESTMENT MANAGEMENT INC 235,407 16,478,000 0.91%
32 TIVERTON ASSET MANAGEMENT LLC 225,000 15,750,000 0.87%
33 FRED ALGER MANAGEMENT, LLC 210,147 14,710,000 0.81%
34 Summit Creek Advisors LLC 199,085 13,936,000 0.77%
35 RUSSELL FRANK CO/ 194,612 13,622,000 0.75%
36 Artisan Partners Limited Partnership 194,000 13,580,000 0.75%
37 THRIVENT FINANCIAL FOR LUTHERANS 167,862 11,750,000 0.65%
38 Capital Investment Services of America, Inc. 163,905 11,473,000 0.63%
39 JANUS HENDERSON GROUP PLC 122,691 11,370,000 0.63%
40 AMERIPRISE FINANCIAL INC 151,833 10,628,000 0.58%
41 SUSQUEHANNA INTERNATIONAL GROUP, LLP 150,800 10,556,000 0.58% Put
42 Bank of New York Mellon Corp 143,366 10,035,000 0.55%
43 TIAA CREF INVESTMENT MANAGEMENT LLC 139,341 9,754,000 0.54%
44 MANUFACTURERS LIFE INSURANCE COMPANY, THE 139,318 9,752,000 0.54%
45 GEODE CAPITAL MANAGEMENT, LLC 136,400 9,548,000 0.52%
46 DEUTSCHE BANK AG\ 135,519 9,485,000 0.52%
47 Nichols Asset Management LLC 132,242 9,257,000 0.51%
48 Nationwide Fund Advisors 130,379 9,127,000 0.50%
49 TEACHERS ADVISORS, LLC 114,304 8,001,000 0.44%
50 TCW GROUP INC 113,095 7,916,000 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.