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

Institutional Holders (2016Q1)
Portfolio Summary: 227 Institutional holders with a total value of $2,279,152,297.
#
Manager Name
Shares
Value ($)
%
Options
Notes
1 BROWN CAPITAL MANAGEMENT LLC 2,751,805 212,137,000 9.31%
2 VANGUARD GROUP INC 1,813,043 139,766,000 6.13%
3 RIVERBRIDGE PARTNERS LLC 1,796,219 138,471,000 6.08%
4 BlackRock Fund Advisors 1,446,921 111,543,000 4.89%
5 JANUS HENDERSON INVESTORS US LLC 1,293,746 99,735,000 4.38%
6 WELLS FARGO & COMPANY/MN 922,204 71,092,000 3.12%
7 ABDIEL CAPITAL ADVISORS, LLC 794,497 61,248,000 2.69%
8 WASATCH ADVISORS LP 711,896 55,649,000 2.44%
9 BLAIR WILLIAM & CO/IL 706,345 54,452,000 2.39%
10 GW&K Investment Management, LLC 663,152 51,122,000 2.24%
11 Conestoga Capital Advisors, LLC 627,868 48,402,000 2.12%
12 BlackRock Institutional Trust Company, N.A. 583,668 44,995,000 1.97%
13 Stephens Investment Management Group LLC 572,467 44,131,000 1.94%
14 NEW YORK STATE COMMON RETIREMENT FUND 569,078 43,870,000 1.92%
15 Apex Capital Management 562,997 43,401,000 1.90%
16 NORTHERN TRUST CORP 514,097 39,631,000 1.74%
17 LORD, ABBETT & CO. LLC 508,162 39,174,000 1.72%
18 PRICE T ROWE ASSOCIATES INC /MD/ 504,666 38,905,000 1.71%
19 STATE STREET CORP 442,097 34,079,000 1.50%
20 Crestwood Capital Management, L.P. 435,099 33,542,000 1.47%
21 LOOMIS SAYLES & CO L P 411,497 31,723,000 1.39%
22 KORNITZER CAPITAL MANAGEMENT INC /KS 404,060 31,149,000 1.37%
23 ArrowMark Colorado Holdings LLC 397,067 30,610,000 1.34%
24 TimesSquare Capital Management, LLC 385,000 29,680,000 1.30%
25 AMERIPRISE FINANCIAL INC 362,209 27,917,000 1.22%
26 EAGLE ASSET MANAGEMENT INC 346,505 26,712,000 1.17%
27 Quantum Capital Management, LLC / NJ 336,648 25,952,000 1.14%
28 Artisan Partners Limited Partnership 329,483 25,400,000 1.11%
29 BANK OF AMERICA CORP /DE/ 316,185 24,374,000 1.07%
30 Bank of New York Mellon Corp 313,368 24,156,000 1.06%
31 DIMENSIONAL FUND ADVISORS LP 309,276 23,843,000 1.05%
32 FIDUCIARY MANAGEMENT ASSOCIATES LLC 296,457 22,854,000 1.00%
33 Ranger Investment Management, L.P. 294,770 22,724,000 1.00%
34 ROYAL BANK OF CANADA 262,307 20,222,000 0.89%
35 MAIRS & POWER INC 249,294 19,218,000 0.84%
36 Nationwide Fund Advisors 229,310 18,161,000 0.80%
37 THRIVENT FINANCIAL FOR LUTHERANS 224,722 17,323,000 0.76%
38 Summit Creek Advisors LLC 222,691 17,167,000 0.75%
39 FRANKLIN RESOURCES INC 215,881 16,642,000 0.73%
40 NORGES BANK 207,327 15,983,000 0.70%
41 FRED ALGER MANAGEMENT, LLC 188,121 14,502,000 0.64%
42 Century Capital Management, LLC 186,268 14,359,000 0.63%
43 Polar Capital LLP 175,697 13,541,000 0.59%
44 RUSSELL FRANK CO/ 172,810 13,322,000 0.58%
45 Capital Investment Services of America, Inc. 171,607 13,229,000 0.58%
46 TIVERTON ASSET MANAGEMENT LLC 169,933 13,100,000 0.57%
47 JANUS HENDERSON GROUP PLC 169,664 13,079,000 0.57%
48 PRINCIPAL FINANCIAL GROUP INC 164,629 12,691,000 0.56%
49 RICE HALL JAMES & ASSOCIATES, LLC 153,019 11,796,000 0.52%
50 GEODE CAPITAL MANAGEMENT, LLC 152,487 11,755,000 0.52%
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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.