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

Institutional Holders (2015Q2)
Portfolio Summary: 214 Institutional holders with a total value of $6,652,461,374.
#
Manager Name
Shares
Value ($)
%
Options
Notes
1 BAMCO INC /NY/ 2,920,254 587,730,000 8.83%
2 WELLINGTON MANAGEMENT GROUP LLP 2,690,383 541,466,000 8.14%
3 VANGUARD GROUP INC 2,021,202 406,787,000 6.11%
4 Winslow Capital Management, LLC 1,469,752 295,803,000 4.45%
5 WELLS FARGO & COMPANY/MN 1,468,459 295,542,000 4.44%
6 BLAIR WILLIAM & CO/IL 1,408,955 283,566,000 4.26%
7 PRICE T ROWE ASSOCIATES INC /MD/ 1,307,223 263,092,000 3.95%
8 JANUS HENDERSON INVESTORS US LLC 1,257,630 253,110,000 3.80%
9 JPMORGAN CHASE & CO 1,181,546 237,798,000 3.57%
10 TimesSquare Capital Management, LLC 1,098,011 220,986,000 3.32%
11 WADDELL & REED FINANCIAL INC 872,912 175,682,000 2.64%
12 RIVERBRIDGE PARTNERS LLC 808,326 162,684,000 2.45%
13 BlackRock Institutional Trust Company, N.A. 802,182 161,447,000 2.43%
14 ALLIANCEBERNSTEIN L.P. 796,564 160,316,000 2.41%
15 AMERICAN CENTURY COMPANIES INC 694,393 139,754,000 2.10%
16 FRANKLIN RESOURCES INC 568,240 114,364,000 1.72%
17 Invesco Ltd. 528,006 106,267,000 1.60%
18 RUSSELL FRANK CO/ 446,526 89,885,000 1.35%
19 Artisan Partners Limited Partnership 403,382 81,185,000 1.22%
20 WESTFIELD CAPITAL MANAGEMENT CO LP 402,211 80,949,000 1.22%
21 DF DENT & CO INC 401,739 80,854,000 1.22%
22 FEDERATED HERMES, INC. 376,500 75,774,000 1.14%
23 OppenheimerFunds, Inc. 371,210 74,710,000 1.12%
24 STATE STREET CORP 368,858 74,233,000 1.12%
25 CORNERSTONE CAPITAL MANAGEMENT LLC 352,227 70,889,000 1.07%
26 DARUMA CAPITAL MANAGEMENT LLC 327,911 65,995,000 0.99%
27 KORNITZER CAPITAL MANAGEMENT INC /KS 312,476 62,889,000 0.95%
28 AMERIPRISE FINANCIAL INC 292,347 58,837,000 0.88%
29 Wildcat Capital Management, LLC 276,947 55,738,000 0.84%
30 BlackRock Fund Advisors 275,159 55,379,000 0.83%
31 Stephens Investment Management Group LLC 253,903 51,101,000 0.77%
32 Granahan Investment Management, LLC 248,166 49,946,000 0.75%
33 NORGES BANK 243,877 49,083,000 0.74%
34 FRED ALGER MANAGEMENT, LLC 239,729 48,248,000 0.73%
35 MANAGED ACCOUNT ADVISORS LLC 236,741 47,646,000 0.72%
36 NEXT CENTURY GROWTH INVESTORS LLC 230,449 46,380,000 0.70%
37 Nationwide Fund Advisors 214,441 43,158,000 0.65%
38 GEODE CAPITAL MANAGEMENT, LLC 191,071 38,454,000 0.58%
39 Conestoga Capital Advisors, LLC 179,324 36,091,000 0.54%
40 NORTHERN TRUST CORP 178,807 35,986,000 0.54%
41 JANUS HENDERSON GROUP PLC 161,030 32,409,000 0.49%
42 MASSACHUSETTS FINANCIAL SERVICES CO /MA/ 157,380 31,674,298 0.48%
43 Bank of New York Mellon Corp 145,801 29,345,000 0.44%
44 Calamos Advisors LLC 144,821 29,147,000 0.44%
45 Neuberger Berman Group LLC 134,673 27,104,000 0.41%
46 GILDER GAGNON HOWE & CO LLC 130,011 26,166,000 0.39%
47 TIAA CREF INVESTMENT MANAGEMENT LLC 102,488 20,627,000 0.31%
48 Capital World Investors 100,000 20,126,000 0.30%
49 NEW YORK STATE COMMON RETIREMENT FUND 99,880 20,102,000 0.30%
50 CALIFORNIA PUBLIC EMPLOYEES RETIREMENT SYSTEM 93,700 18,858,000 0.28%
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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.