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

Institutional Holders (2015Q3)
Portfolio Summary: 220 Institutional holders with a total value of $5,844,804,959.
#
Manager Name
Shares
Value ($)
%
Options
Notes
1 WELLINGTON MANAGEMENT GROUP LLP 3,083,644 533,656,000 9.13%
2 BAMCO INC /NY/ 2,894,743 500,964,000 8.57%
3 VANGUARD GROUP INC 2,043,552 353,657,000 6.05%
4 WELLS FARGO & COMPANY/MN 1,522,661 263,514,000 4.51%
5 JANUS HENDERSON INVESTORS US LLC 1,502,371 260,000,000 4.45%
6 Winslow Capital Management, LLC 1,418,377 245,464,000 4.20%
7 PRICE T ROWE ASSOCIATES INC /MD/ 1,307,907 226,346,000 3.87%
8 WILLIAM BLAIR INVESTMENT MANAGEMENT, LLC 1,137,597 196,873,000 3.37%
9 JPMORGAN CHASE & CO 1,125,769 194,825,000 3.33%
10 TimesSquare Capital Management, LLC 1,057,045 182,932,000 3.13%
11 WADDELL & REED FINANCIAL INC 898,382 155,474,000 2.66%
12 ALLIANCEBERNSTEIN L.P. 860,782 148,967,000 2.55%
13 BlackRock Institutional Trust Company, N.A. 796,145 137,781,000 2.36%
14 RIVERBRIDGE PARTNERS LLC 794,021 137,413,000 2.35%
15 AMERICAN CENTURY COMPANIES INC 628,292 108,732,000 1.86%
16 FRANKLIN RESOURCES INC 577,810 99,996,000 1.71%
17 Invesco Ltd. 521,441 90,240,000 1.54%
18 WESTFIELD CAPITAL MANAGEMENT CO LP 475,321 82,259,000 1.41%
19 RUSSELL FRANK CO/ 436,726 75,548,000 1.29%
20 DF DENT & CO INC 416,322 72,049,000 1.23%
21 Artisan Partners Limited Partnership 413,099 71,491,000 1.22%
22 OppenheimerFunds, Inc. 412,800 71,439,000 1.22%
23 FEDERATED HERMES, INC. 387,600 67,078,000 1.15%
24 BLAIR WILLIAM & CO/IL 383,178 66,312,000 1.13%
25 STATE STREET CORP 375,714 65,025,000 1.11%
26 NORTHERN TRUST CORP 327,621 56,697,000 0.97%
27 AMERIPRISE FINANCIAL INC 304,434 52,687,000 0.90%
28 Granahan Investment Management, LLC 290,603 50,292,000 0.86%
29 BlackRock Fund Advisors 280,164 48,485,000 0.83%
30 BANK OF AMERICA CORP /DE/ 279,686 48,403,000 0.83%
31 CORNERSTONE CAPITAL MANAGEMENT LLC 266,958 46,200,000 0.79%
32 Wildcat Capital Management, LLC 263,947 45,679,000 0.78%
33 DARUMA CAPITAL MANAGEMENT LLC 259,656 44,936,000 0.77%
34 Calamos Advisors LLC 250,354 43,326,000 0.74%
35 NEXT CENTURY GROWTH INVESTORS LLC 243,970 42,221,000 0.72%
36 NORGES BANK 238,364 41,251,000 0.71%
37 Stephens Investment Management Group LLC 222,174 38,449,000 0.66%
38 Nationwide Fund Advisors 216,058 37,391,000 0.64%
39 GEODE CAPITAL MANAGEMENT, LLC 197,629 34,200,000 0.59%
40 KORNITZER CAPITAL MANAGEMENT INC /KS 181,959 31,490,000 0.54%
41 Conestoga Capital Advisors, LLC 174,673 30,229,000 0.52%
42 Neuberger Berman Group LLC 172,057 29,776,000 0.51%
43 MASSACHUSETTS FINANCIAL SERVICES CO /MA/ 164,579 28,483,000 0.49%
44 JANUS HENDERSON GROUP PLC 153,111 26,507,000 0.45%
45 Bank of New York Mellon Corp 146,900 25,423,000 0.43%
46 GOLDMAN SACHS GROUP INC 143,477 24,830,000 0.42%
47 NEW YORK STATE COMMON RETIREMENT FUND 134,163 23,218,000 0.40%
48 AMUNDI ASSET MANAGEMENT US, INC. 114,699 19,850,000 0.34%
49 MARSICO CAPITAL MANAGEMENT LLC 111,204 19,245,000 0.33%
50 GILDER GAGNON HOWE & CO LLC 109,030 18,869,000 0.32%
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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.