Dark
Light
System
Security
PROTO LABS INC
PROTO LABS INC. Institutional holdings reported to the SEC.

Institutional Holders (2014Q3)
Portfolio Summary: 195 Institutional holders with a total value of $1,719,534,736.
#
Manager Name
Shares
Value ($)
%
Options
Notes
1 WELLS FARGO & COMPANY/MN 1,902,437 131,257,000 7.63%
2 KORNITZER CAPITAL MANAGEMENT INC /KS 1,747,925 120,607,000 7.01%
3 RIVERBRIDGE PARTNERS LLC 1,369,871 94,521,000 5.50%
4 VANGUARD GROUP INC 1,321,963 91,215,000 5.30%
5 FRANKLIN RESOURCES INC 1,012,382 69,854,000 4.06%
6 BROWN CAPITAL MANAGEMENT LLC 993,449 68,548,000 3.99%
7 Stephens Investment Management Group LLC 718,895 49,604,000 2.88%
8 WASATCH ADVISORS LP 692,136 47,757,000 2.78%
9 GILDER GAGNON HOWE & CO LLC 686,908 47,397,000 2.76%
10 BlackRock Institutional Trust Company, N.A. 572,803 39,523,000 2.30%
11 GW&K Investment Management, LLC 559,054 38,575,000 2.24%
12 OppenheimerFunds, Inc. 540,759 37,312,000 2.17%
13 NEW AMSTERDAM PARTNERS LLC/NY 532,053 36,712,000 2.13%
14 BlackRock Fund Advisors 491,291 33,899,000 1.97%
15 Ranger Investment Management, L.P. 476,595 32,885,000 1.91%
16 Conestoga Capital Advisors, LLC 473,039 32,640,000 1.90%
17 BLAIR WILLIAM & CO/IL 455,597 31,436,000 1.83%
18 EAGLE ASSET MANAGEMENT INC 444,185 30,648,000 1.78%
19 NORTHERN TRUST CORP 427,417 29,492,000 1.72%
20 NEXT CENTURY GROWTH INVESTORS LLC 410,519 28,325,000 1.65%
21 COLUMBIA PARTNERS L.L.C. INVESTMENT MANAGEMENT 401,789 27,723,000 1.61%
22 TAMRO Capital Partners LLC 382,409 26,386,000 1.53%
23 NEW YORK STATE COMMON RETIREMENT FUND 363,647 25,092,000 1.46%
24 STATE STREET CORP 353,645 24,408,000 1.42%
25 Crestwood Capital Management, L.P. 323,950 22,353,000 1.30%
26 ROYAL BANK OF CANADA 314,851 21,724,000 1.26%
27 TEACHERS ADVISORS, LLC 310,539 21,427,000 1.25%
28 LOOMIS SAYLES & CO L P 276,800 19,099,000 1.11%
29 RUSSELL FRANK CO/ 257,263 17,751,000 1.03%
30 Apex Capital Management 251,552 17,357,000 1.01%
31 DIMENSIONAL FUND ADVISORS LP 247,884 17,105,000 0.99%
32 MANAGED ACCOUNT ADVISORS LLC 222,514 15,354,000 0.89%
33 Calamos Advisors LLC 207,106 14,290,000 0.83%
34 DEUTSCHE BANK AG\ 203,774 14,059,000 0.82%
35 TIAA CREF INVESTMENT MANAGEMENT LLC 202,323 13,960,000 0.81%
36 Artisan Partners Limited Partnership 177,211 12,228,000 0.71%
37 Nationwide Fund Advisors 174,185 12,019,000 0.70%
38 ArrowMark Colorado Holdings LLC 173,996 12,006,000 0.70%
39 Bank of New York Mellon Corp 160,318 11,062,000 0.64%
40 THORNBURG INVESTMENT MANAGEMENT INC 158,519 10,938,000 0.64%
41 GENEVA CAPITAL MANAGEMENT LLC 146,471 10,106,000 0.59%
42 AMERIPRISE FINANCIAL INC 145,870 10,063,000 0.59%
43 Capital Investment Services of America, Inc. 141,330 9,752,000 0.57%
44 Summit Creek Advisors LLC 138,600 9,563,000 0.56%
45 SUSQUEHANNA INTERNATIONAL GROUP, LLP 112,900 7,790,000 0.45% Call
46 GEODE CAPITAL MANAGEMENT, LLC 111,639 7,703,000 0.45%
47 Nichols Asset Management LLC 106,827 7,371,000 0.43%
48 ARBOR CAPITAL MANAGEMENT LLC 102,608 7,080,000 0.41%
49 Pier Capital, LLC 101,012 6,970,000 0.41%
50 MORGAN STANLEY 98,022 6,764,000 0.39%
Page 1 of 4

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.