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

Institutional Holders (2017Q1)
Portfolio Summary: 286 Institutional holders with a total value of $6,827,554,488.
#
Manager Name
Shares
Value ($)
%
Options
Notes
1 BAMCO INC /NY/ 2,999,386 621,533,000 9.10%
2 VANGUARD GROUP INC 2,553,913 529,222,000 7.75%
3 JANUS HENDERSON INVESTORS US LLC 2,362,702 489,599,000 7.17%
4 WELLINGTON MANAGEMENT GROUP LLP 1,859,435 385,312,000 5.64%
5 PRICE T ROWE ASSOCIATES INC /MD/ 1,797,308 372,438,000 5.45%
6 WILLIAM BLAIR INVESTMENT MANAGEMENT, LLC 1,621,963 336,103,000 4.92%
7 BlackRock Finance, Inc. 1,546,911 320,551,000 4.69%
8 Winslow Capital Management, LLC 1,096,269 227,169,000 3.33%
9 FRANKLIN RESOURCES INC 802,726 166,333,000 2.44%
10 TimesSquare Capital Management, LLC 794,155 164,565,000 2.41%
11 WADDELL & REED FINANCIAL INC 685,330 142,014,000 2.08%
12 WELLS FARGO & COMPANY/MN 675,786 140,036,000 2.05%
13 RIVERBRIDGE PARTNERS LLC 669,890 138,815,000 2.03%
14 Invesco Ltd. 606,157 125,608,000 1.84%
15 STATE STREET CORP 570,780 118,272,000 1.73%
16 Bares Capital Management, Inc. 551,194 114,218,000 1.67%
17 FMR LLC 477,500 98,947,000 1.45%
18 ALLIANCEBERNSTEIN L.P. 460,518 95,429,000 1.40%
19 DF DENT & CO INC 416,127 86,230,000 1.26%
20 FEDERATED HERMES, INC. 370,900 76,858,000 1.13%
21 BLAIR WILLIAM & CO/IL 366,331 75,214,000 1.10%
22 AMERICAN CENTURY COMPANIES INC 309,694 64,175,000 0.94%
23 WESTFIELD CAPITAL MANAGEMENT CO LP 309,258 64,084,000 0.94%
24 Stephens Investment Management Group LLC 291,737 60,454,000 0.89%
25 BANK OF AMERICA CORP /DE/ 285,630 59,189,000 0.87%
26 JPMORGAN CHASE & CO 272,447 56,456,000 0.83%
27 DARUMA CAPITAL MANAGEMENT LLC 257,077 53,271,000 0.78%
28 Bank of New York Mellon Corp 254,156 52,666,000 0.77%
29 GEODE CAPITAL MANAGEMENT, LLC 253,154 52,440,000 0.77%
30 COLUMBIA WANGER ASSET MANAGEMENT LLC 234,026 48,495,000 0.71%
31 Artisan Partners Limited Partnership 227,104 47,060,000 0.69%
32 NORTHERN TRUST CORP 223,889 46,394,000 0.68%
33 RUSSELL INVESTMENTS GROUP, LTD. 221,786 45,962,000 0.67%
34 MACKENZIE FINANCIAL CORP 203,700 42,211,000 0.62%
35 ArrowMark Colorado Holdings LLC 201,792 41,815,000 0.61%
36 Wildcat Capital Management, LLC 190,637 39,504,000 0.58%
37 GOLDMAN SACHS GROUP INC 190,589 39,494,000 0.58%
38 Nationwide Fund Advisors 181,593 37,630,000 0.55%
39 BAILLIE GIFFORD & CO 176,050 36,481,000 0.53%
40 Select Equity Group, L.P. 160,121 33,180,274 0.49%
41 AMERIPRISE FINANCIAL INC 147,670 30,601,000 0.45%
42 Neuberger Berman Group LLC 140,319 29,077,000 0.43%
43 NORGES BANK 136,741 28,335,000 0.42%
44 Mitsubishi UFJ Trust & Banking Corp 129,745 26,886,000 0.39%
45 Granahan Investment Management, LLC 128,059 26,536,000 0.39%
46 JANUS HENDERSON GROUP PLC 123,725 25,638,000 0.38%
47 Swiss National Bank 115,500 23,934,000 0.35%
48 PAR CAPITAL MANAGEMENT INC 115,000 23,830,000 0.35%
49 SEI INVESTMENTS CO 114,031 23,629,000 0.35%
50 TIAA CREF INVESTMENT MANAGEMENT LLC 113,542 23,528,000 0.34%
Page 1 of 6

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.