Dark
Light
System
Security
COSTAR GROUP INC
COSTAR GROUP INC. Institutional holdings reported to the SEC.

Institutional Holders (2016Q2)
Portfolio Summary: 248 Institutional holders with a total value of $7,247,933,883.
#
Manager Name
Shares
Value ($)
%
Options
Notes
1 BAMCO INC /NY/ 2,899,867 634,085,000 8.75%
2 JANUS HENDERSON INVESTORS US LLC 2,307,539 504,560,000 6.96%
3 VANGUARD GROUP INC 2,302,559 503,477,000 6.95%
4 WELLINGTON MANAGEMENT GROUP LLP 2,152,470 470,660,000 6.49%
5 WILLIAM BLAIR INVESTMENT MANAGEMENT, LLC 1,554,321 339,868,000 4.69%
6 WELLS FARGO & COMPANY/MN 1,537,704 336,234,000 4.64%
7 Winslow Capital Management, LLC 1,302,875 284,887,000 3.93%
8 TimesSquare Capital Management, LLC 881,685 192,789,000 2.66%
9 PRICE T ROWE ASSOCIATES INC /MD/ 855,837 187,137,000 2.58%
10 JPMORGAN CHASE & CO 824,767 180,344,000 2.49%
11 FRANKLIN RESOURCES INC 800,240 174,980,000 2.41%
12 BlackRock Institutional Trust Company, N.A. 798,585 174,619,000 2.41%
13 RIVERBRIDGE PARTNERS LLC 751,884 164,407,000 2.27%
14 WADDELL & REED FINANCIAL INC 751,771 164,383,000 2.27%
15 Invesco Ltd. 744,071 162,698,000 2.24%
16 AMERICAN CENTURY COMPANIES INC 614,453 134,356,000 1.85%
17 ALLIANCEBERNSTEIN L.P. 544,283 119,013,000 1.64%
18 WESTFIELD CAPITAL MANAGEMENT CO LP 426,121 93,176,000 1.29%
19 OppenheimerFunds, Inc. 400,797 87,638,000 1.21%
20 FEDERATED HERMES, INC. 391,001 85,497,000 1.18%
21 STATE STREET CORP 376,668 82,362,000 1.14%
22 Artisan Partners Limited Partnership 338,028 73,913,000 1.02%
23 NORTHERN TRUST CORP 336,258 73,526,000 1.01%
24 BLAIR WILLIAM & CO/IL 329,097 71,960,000 0.99%
25 EMERALD ACQUISITION LTD. 306,993 67,099,000 0.93%
26 BlackRock Fund Advisors 304,876 66,664,000 0.92%
27 BANK OF AMERICA CORP /DE/ 302,028 66,041,000 0.91%
28 DARUMA CAPITAL MANAGEMENT LLC 298,293 65,225,000 0.90%
29 Bares Capital Management, Inc. 267,612 58,516,000 0.81%
30 Granahan Investment Management, LLC 258,523 56,529,000 0.78%
31 VOYA INVESTMENT MANAGEMENT LLC 256,957 56,186,000 0.78%
32 Wildcat Capital Management, LLC 251,837 55,067,000 0.76%
33 Stephens Investment Management Group LLC 241,430 52,791,000 0.73%
34 Luxor Capital Group, LP 240,440 52,575,000 0.73%
35 NORGES BANK 233,608 51,081,000 0.70%
36 NEXT CENTURY GROWTH INVESTORS LLC 233,512 51,059,000 0.70%
37 Nationwide Fund Advisors 218,454 47,767,000 0.66%
38 GEODE CAPITAL MANAGEMENT, LLC 215,209 47,057,000 0.65%
39 CORNERSTONE CAPITAL MANAGEMENT LLC 203,408 44,477,000 0.61%
40 AMERIPRISE FINANCIAL INC 199,343 43,590,000 0.60%
41 Calamos Advisors LLC 182,657 39,940,000 0.55%
42 JANUS HENDERSON GROUP PLC 150,886 32,992,000 0.46%
43 Bank of New York Mellon Corp 145,264 31,765,000 0.44%
44 Conestoga Capital Advisors, LLC 141,556 30,953,000 0.43%
45 MASSACHUSETTS FINANCIAL SERVICES CO /MA/ 137,989 30,172,000 0.42%
46 ArrowMark Colorado Holdings LLC 137,795 30,130,000 0.42%
47 GOLDMAN SACHS GROUP INC 137,724 30,115,000 0.42%
48 LORD, ABBETT & CO. LLC 135,671 29,666,000 0.41%
49 NEW YORK STATE COMMON RETIREMENT FUND 135,017 29,523,000 0.41%
50 Neuberger Berman Group LLC 132,553 28,984,000 0.40%
Page 1 of 5

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.