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COSTAR GROUP
COSTAR GROUP. Institutional holdings reported to the SEC.

Institutional Holders (2015Q4)
Portfolio Summary: 218 Institutional holders with a total value of $6,936,478,311.
#
Manager Name
Shares
Value ($)
%
Options
Notes
1 WELLINGTON MANAGEMENT GROUP LLP 3,058,832 632,231,000 9.11%
2 BAMCO INC /NY/ 2,875,266 594,289,000 8.57%
3 VANGUARD GROUP INC 2,091,573 432,308,000 6.23%
4 JANUS HENDERSON INVESTORS US LLC 1,865,291 385,530,000 5.56%
5 WELLS FARGO & COMPANY/MN 1,645,738 340,158,000 4.90%
6 WILLIAM BLAIR INVESTMENT MANAGEMENT, LLC 1,369,440 283,050,000 4.08%
7 Winslow Capital Management, LLC 1,346,560 278,320,000 4.01%
8 TimesSquare Capital Management, LLC 1,015,965 209,990,000 3.03%
9 JPMORGAN CHASE & CO 1,006,539 208,042,000 3.00%
10 WADDELL & REED FINANCIAL INC 922,246 190,619,000 2.75%
11 PRICE T ROWE ASSOCIATES INC /MD/ 920,742 190,308,000 2.74%
12 BlackRock Institutional Trust Company, N.A. 793,567 164,022,000 2.36%
13 RIVERBRIDGE PARTNERS LLC 773,600 159,895,000 2.31%
14 FRANKLIN RESOURCES INC 745,579 154,104,000 2.22%
15 ALLIANCEBERNSTEIN L.P. 780,298 135,038,000 1.95%
16 AMERICAN CENTURY COMPANIES INC 645,529 133,424,000 1.92%
17 Invesco Ltd. 612,958 126,693,000 1.83%
18 WESTFIELD CAPITAL MANAGEMENT CO LP 472,847 97,733,000 1.41%
19 OppenheimerFunds, Inc. 421,687 87,158,000 1.26%
20 Artisan Partners Limited Partnership 401,495 82,985,000 1.20%
21 DF DENT & CO INC 399,075 82,485,000 1.19%
22 FEDERATED HERMES, INC. 389,300 80,464,000 1.16%
23 STATE STREET CORP 378,260 78,178,000 1.13%
24 RUSSELL FRANK CO/ 369,798 76,723,000 1.11%
25 NORTHERN TRUST CORP 345,569 71,426,000 1.03%
26 BLAIR WILLIAM & CO/IL 331,012 68,417,000 0.99%
27 BlackRock Fund Advisors 304,793 62,998,000 0.91%
28 BANK OF AMERICA CORP /DE/ 294,311 60,831,000 0.88%
29 Calamos Advisors LLC 277,472 57,351,000 0.83%
30 Granahan Investment Management, LLC 256,902 53,099,000 0.77%
31 Wildcat Capital Management, LLC 256,072 52,928,000 0.76%
32 DARUMA CAPITAL MANAGEMENT LLC 254,054 52,510,000 0.76%
33 NORGES BANK 232,953 48,149,000 0.69%
34 NEXT CENTURY GROWTH INVESTORS LLC 232,705 48,097,000 0.69%
35 Stephens Investment Management Group LLC 223,414 46,177,000 0.67%
36 AMERIPRISE FINANCIAL INC 213,415 44,110,000 0.64%
37 Nationwide Fund Advisors 209,656 43,334,000 0.62%
38 GEODE CAPITAL MANAGEMENT, LLC 197,101 40,738,000 0.59%
39 MASSACHUSETTS FINANCIAL SERVICES CO /MA/ 165,140 34,133,000 0.49%
40 LORD, ABBETT & CO. LLC 159,577 32,983,000 0.48%
41 GOLDMAN SACHS GROUP INC 150,610 31,130,000 0.45%
42 JANUS HENDERSON GROUP PLC 148,441 30,681,000 0.44%
43 Conestoga Capital Advisors, LLC 144,696 29,907,000 0.43%
44 Bank of New York Mellon Corp 142,724 29,499,000 0.43%
45 CORNERSTONE CAPITAL MANAGEMENT LLC 138,718 28,672,000 0.41%
46 Neuberger Berman Group LLC 135,501 28,007,000 0.40%
47 NEW YORK STATE COMMON RETIREMENT FUND 134,963 27,896,000 0.40%
48 KORNITZER CAPITAL MANAGEMENT INC /KS 133,729 27,640,000 0.40%
49 AMUNDI ASSET MANAGEMENT US, INC. 114,438 23,653,000 0.34%
50 SEI INVESTMENTS CO 114,377 23,641,000 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.