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

Institutional Holders (2014Q1)
Portfolio Summary: 187 Institutional holders with a total value of $1,614,651,268.
#
Manager Name
Shares
Value ($)
%
Options
Notes
1 WELLS FARGO & COMPANY/MN 2,207,704 149,395,000 9.25%
2 KORNITZER CAPITAL MANAGEMENT INC /KS 1,841,590 124,620,000 7.72%
3 RIVERBRIDGE PARTNERS LLC 1,396,953 94,532,000 5.85%
4 VANGUARD GROUP INC 1,223,359 82,785,000 5.13%
5 WASATCH ADVISORS LP 805,829 54,530,000 3.38%
6 GILDER GAGNON HOWE & CO LLC 700,061 47,373,000 2.93%
7 FRANKLIN RESOURCES INC 699,407 47,329,000 2.93%
8 Stephens Investment Management Group LLC 680,565 46,054,000 2.85%
9 TAMRO Capital Partners LLC 675,160 45,688,000 2.83%
10 NEXT CENTURY GROWTH INVESTORS LLC 586,078 39,659,000 2.46%
11 OppenheimerFunds, Inc. 579,459 39,212,000 2.43%
12 AXIOM INVESTORS LLC /DE 573,803 38,829,000 2.40%
13 BlackRock Institutional Trust Company, N.A. 545,065 36,885,000 2.28%
14 COLUMBIA PARTNERS L.L.C. INVESTMENT MANAGEMENT 510,881 34,571,000 2.14%
15 MASSACHUSETTS FINANCIAL SERVICES CO /MA/ 478,330 32,368,591 2.00%
16 Conestoga Capital Advisors, LLC 456,317 30,879,000 1.91%
17 BlackRock Fund Advisors 433,776 29,354,000 1.82%
18 GW&K Investment Management, LLC 403,010 27,272,000 1.69%
19 NORTHERN TRUST CORP 391,177 26,471,000 1.64%
20 VOYA INVESTMENT MANAGEMENT LLC 342,427 23,172,000 1.44%
21 ROOSEVELT INVESTMENT GROUP LLC 340,407 23,035,341 1.43%
22 ROYAL BANK OF CANADA 327,304 22,149,000 1.37%
23 TEACHERS ADVISORS, LLC 314,310 21,269,000 1.32%
24 STATE STREET CORP 298,698 20,207,000 1.25%
25 LOOMIS SAYLES & CO L P 293,375 19,853,000 1.23%
26 Calamos Advisors LLC 260,680 17,640,000 1.09%
27 MANAGED ACCOUNT ADVISORS LLC 245,117 16,587,000 1.03%
28 Ranger Investment Management, L.P. 239,580 16,212,000 1.00%
29 DIMENSIONAL FUND ADVISORS LP 226,294 15,313,000 0.95%
30 Artisan Partners Limited Partnership 224,217 15,173,000 0.94%
31 RUSSELL FRANK CO/ 216,007 14,617,000 0.91%
32 ALLIANCEBERNSTEIN L.P. 183,338 12,406,000 0.77%
33 AMERIPRISE FINANCIAL INC 174,271 11,792,000 0.73%
34 TIAA CREF INVESTMENT MANAGEMENT LLC 164,050 11,101,000 0.69%
35 Nationwide Fund Advisors 161,397 10,922,000 0.68%
36 Capital World Investors 160,452 10,858,000 0.67%
37 Bank of New York Mellon Corp 160,185 10,841,000 0.67%
38 TCW GROUP INC 154,959 10,487,000 0.65%
39 NEW AMSTERDAM PARTNERS LLC/NY 151,710 10,266,000 0.64%
40 Summit Creek Advisors LLC 147,545 9,984,000 0.62%
41 WADDELL & REED FINANCIAL INC 141,686 9,588,000 0.59%
42 BLAIR WILLIAM & CO/IL 140,277 9,492,000 0.59%
43 GENEVA CAPITAL MANAGEMENT LLC 139,536 9,442,000 0.58%
44 NEW YORK STATE COMMON RETIREMENT FUND 133,562 9,038,000 0.56%
45 D. E. Shaw & Co., Inc. 127,900 8,655,000 0.54% Put
46 TURNER INVESTMENTS LLC 117,760 7,969,000 0.49%
47 UBS AG 113,010 7,647,000 0.47%
48 EMERALD ADVISERS, LLC 104,445 7,068,000 0.44%
49 GEODE CAPITAL MANAGEMENT, LLC 103,364 6,994,000 0.43%
50 SUSQUEHANNA INTERNATIONAL GROUP, LLP 100,600 6,807,000 0.42% Put
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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.