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Corp Executive Board Co
Corp Executive Board Co. Institutional holdings reported to the SEC.

Institutional Holders (2015Q1)
Portfolio Summary: 203 Institutional holders with a total value of $2,630,507,060.
#
Manager Name
Shares
Value ($)
%
Options
Notes
1 VANGUARD GROUP INC 2,338,654 186,766,000 7.10%
2 TimesSquare Capital Management, LLC 2,069,560 165,275,000 6.28%
3 BlackRock Fund Advisors 1,623,500 129,653,000 4.93%
4 FMR LLC 1,419,437 113,356,000 4.31%
5 JANUS HENDERSON INVESTORS US LLC 1,282,284 102,403,000 3.89%
6 KORNITZER CAPITAL MANAGEMENT INC /KS 1,233,681 98,522,000 3.75%
7 BlackRock Institutional Trust Company, N.A. 1,186,653 94,766,000 3.60%
8 STATE STREET CORP 1,134,218 90,586,000 3.44%
9 BLAIR WILLIAM & CO/IL 1,084,366 86,597,000 3.29%
10 MORGAN STANLEY 1,015,626 81,109,000 3.08%
11 Burgundy Asset Management Ltd. 904,148 72,205,000 2.74%
12 Bank of New York Mellon Corp 879,941 70,274,000 2.67%
13 DISCIPLINED GROWTH INVESTORS INC /MN 852,936 68,115,000 2.59%
14 ArrowMark Colorado Holdings LLC 829,814 66,269,000 2.52%
15 KAYNE ANDERSON RUDNICK INVESTMENT MANAGEMENT LLC 827,692 66,099,000 2.51%
16 JENNISON ASSOCIATES LLC 746,373 59,605,000 2.27%
17 GW&K Investment Management, LLC 742,543 59,299,000 2.25%
18 Van Berkom & Associates Inc. 640,022 51,112,000 1.94%
19 NORTHERN TRUST CORP 604,316 48,261,000 1.83%
20 DIMENSIONAL FUND ADVISORS LP 597,721 47,734,000 1.81%
21 WASATCH ADVISORS LP 537,500 42,925,000 1.63%
22 BROWN ADVISORY INC 522,122 41,696,000 1.59%
23 Stephens Investment Management Group LLC 463,029 36,977,000 1.41%
24 PRICE T ROWE ASSOCIATES INC /MD/ 457,300 36,520,000 1.39%
25 WESTFIELD CAPITAL MANAGEMENT CO LP 451,568 36,062,000 1.37%
26 NORGES BANK 341,586 27,279,000 1.04%
27 KALMAR INVESTMENTS INC /DE/ 334,589 26,720,000 1.02%
28 LOOMIS SAYLES & CO L P 327,684 26,168,000 0.99%
29 ROYCE & ASSOCIATES LP 317,500 25,356,000 0.96%
30 TAMRO Capital Partners LLC 292,162 23,332,000 0.89%
31 SCHWERIN BOYLE CAPITAL MANAGEMENT INC 291,550 23,283,000 0.89%
32 WELLS FARGO & COMPANY/MN 269,482 21,522,000 0.82%
33 VOYA INVESTMENT MANAGEMENT LLC 268,385 21,433,000 0.81%
34 ATLANTA CAPITAL MANAGEMENT CO L L C 260,509 20,804,000 0.79%
35 RENAISSANCE TECHNOLOGIES LLC 233,993 18,687,000 0.71%
36 AMERIPRISE FINANCIAL INC 232,812 18,591,000 0.71%
37 PRINCIPAL FINANCIAL GROUP INC 231,155 18,459,000 0.70%
38 STIFEL FINANCIAL CORP 193,171 15,428,000 0.59%
39 GEODE CAPITAL MANAGEMENT, LLC 192,852 15,401,000 0.59%
40 TIAA CREF INVESTMENT MANAGEMENT LLC 189,221 15,111,000 0.57%
41 PANAGORA ASSET MANAGEMENT INC 177,639 14,186,000 0.54%
42 BlackRock Investment Management, LLC 173,792 13,879,000 0.53%
43 Elk Creek Partners, LLC 161,838 12,924,000 0.49%
44 RICE HALL JAMES & ASSOCIATES, LLC 146,846 11,727,000 0.45%
45 JPMORGAN CHASE & CO 141,093 11,266,000 0.43%
46 Copeland Capital Management, LLC 136,953 10,937,000 0.42%
47 PUBLIC EMPLOYEES RETIREMENT SYSTEM OF OHIO 134,392 10,733,000 0.41%
48 Invesco Ltd. 133,787 10,683,000 0.41%
49 MILLENNIUM MANAGEMENT LLC 122,491 9,782,000 0.37%
50 CHARLES SCHWAB INVESTMENT MANAGEMENT INC 111,575 8,911,000 0.34%
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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.