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

Institutional Holders (2015Q1)
Portfolio Summary: 218 Institutional holders with a total value of $6,616,088,662.
#
Manager Name
Shares
Value ($)
%
Options
Notes
1 BAMCO INC /NY/ 2,918,228 577,313,000 8.73%
2 WELLINGTON MANAGEMENT GROUP LLP 2,586,494 511,687,000 7.73%
3 VANGUARD GROUP INC 1,966,865 389,105,000 5.88%
4 Winslow Capital Management, LLC 1,579,067 312,386,000 4.72%
5 WELLS FARGO & COMPANY/MN 1,554,255 307,479,000 4.65%
6 BLAIR WILLIAM & CO/IL 1,402,658 277,488,000 4.19%
7 JANUS HENDERSON INVESTORS US LLC 1,255,218 248,320,000 3.75%
8 PRICE T ROWE ASSOCIATES INC /MD/ 1,218,351 241,026,000 3.64%
9 JPMORGAN CHASE & CO 1,108,572 219,309,000 3.31%
10 TimesSquare Capital Management, LLC 1,022,074 202,197,000 3.06%
11 RIVERBRIDGE PARTNERS LLC 862,070 170,543,000 2.58%
12 BlackRock Institutional Trust Company, N.A. 786,109 155,516,000 2.35%
13 AMERICAN CENTURY COMPANIES INC 766,056 151,549,000 2.29%
14 WADDELL & REED FINANCIAL INC 720,741 142,584,000 2.16%
15 ALLIANCEBERNSTEIN L.P. 719,428 142,324,000 2.15%
16 Invesco Ltd. 608,807 120,441,000 1.82%
17 KORNITZER CAPITAL MANAGEMENT INC /KS 525,879 104,035,000 1.57%
18 FRANKLIN RESOURCES INC 503,750 99,657,000 1.51%
19 Artisan Partners Limited Partnership 462,631 91,522,000 1.38%
20 WESTFIELD CAPITAL MANAGEMENT CO LP 433,874 85,833,000 1.30%
21 RUSSELL FRANK CO/ 426,322 84,357,000 1.28%
22 JAT CAPITAL MANAGEMENT, L.P. 395,418 78,226,000 1.18%
23 FEDERATED HERMES, INC. 391,300 77,411,000 1.17%
24 CORNERSTONE CAPITAL MANAGEMENT LLC 385,344 76,233,000 1.15%
25 STATE STREET CORP 372,591 73,710,000 1.11%
26 OppenheimerFunds, Inc. 371,160 73,427,000 1.11%
27 NORTHERN TRUST CORP 348,907 69,024,000 1.04%
28 DARUMA CAPITAL MANAGEMENT LLC 325,350 64,364,000 0.97%
29 AMERIPRISE FINANCIAL INC 314,609 62,239,000 0.94%
30 Wildcat Capital Management, LLC 291,447 57,657,000 0.87%
31 FRED ALGER MANAGEMENT, LLC 275,234 54,450,000 0.82%
32 BlackRock Fund Advisors 264,911 52,407,000 0.79%
33 Stephens Investment Management Group LLC 264,493 52,325,000 0.79%
34 MANAGED ACCOUNT ADVISORS LLC 249,707 49,399,000 0.75%
35 Granahan Investment Management, LLC 247,045 48,873,000 0.74%
36 NORGES BANK 243,877 48,246,000 0.73%
37 NEXT CENTURY GROWTH INVESTORS LLC 236,449 46,776,000 0.71%
38 Nationwide Fund Advisors 225,477 44,606,000 0.67%
39 MASSACHUSETTS FINANCIAL SERVICES CO /MA/ 188,084 37,208,657 0.56%
40 GEODE CAPITAL MANAGEMENT, LLC 187,724 37,137,000 0.56%
41 Conestoga Capital Advisors, LLC 184,149 36,430,000 0.55%
42 FMR LLC 146,089 28,901,000 0.44%
43 Bank of New York Mellon Corp 141,249 27,943,000 0.42%
44 Neuberger Berman Group LLC 134,948 26,697,000 0.40%
45 GILDER GAGNON HOWE & CO LLC 130,413 25,800,000 0.39%
46 ArrowMark Colorado Holdings LLC 122,795 24,293,000 0.37%
47 JANUS HENDERSON GROUP PLC 165,433 23,901,000 0.36%
48 TIVERTON ASSET MANAGEMENT LLC 120,000 23,740,000 0.36%
49 CROSSLINK CAPITAL INC 118,596 23,462,000 0.35%
50 BROWN ADVISORY INC 105,690 20,908,000 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.