COSTAR GROUP INC

Ticker: CSGP CUSIP: 22160N109 Class: EQTY

Note: Option positions (PUT/CALL) are excluded.

InstitutionSharesValue ($000)
VANGUARD GROUP INC70,108,999$4,714,129
BlackRock, Inc.33,970,626$2,284,185
BAMCO INC /NY/19,498,099$1,311,052
STATE STREET CORP18,632,352$1,252,839
PRINCIPAL FINANCIAL GROUP INC17,566,074$1,181,146
BAILLIE GIFFORD & CO12,933,185$869,627
GEODE CAPITAL MANAGEMENT, LLC12,182,167$816,237
Capital International Investors10,842,010$729,020
AKRE CAPITAL MANAGEMENT LLC9,617,805$646,701
JANUS HENDERSON GROUP PLC7,473,380$502,487
NORGES BANK7,090,495$476,765
Capital Research Global Investors5,566,962$374,329
Invesco Ltd.5,387,056$362,226
MORGAN STANLEY5,291,136$355,776
POLEN CAPITAL MANAGEMENT LLC4,890,936$328,867
Vulcan Value Partners, LLC4,485,021$302
MIZUHO MARKETS AMERICAS LLC4,416,116$296,940
Amundi4,114,516$276,660
Bank of New York Mellon Corp4,113,002$276,558
NOMURA ASSET MANAGEMENT INTERNATIONAL INC.3,909,161$262,852
GOLDMAN SACHS GROUP INC3,751,528$252,253
Nuveen, LLC3,560,896$239,435
BANK OF AMERICA CORP /DE/3,504,812$235,664
NORTHERN TRUST CORP3,466,062$233,058
Third Point LLC3,165,000$212,815
MASSACHUSETTS FINANCIAL SERVICES CO /MA/3,159,925$212,473
Legal & General Group Plc2,861,300$192,394
BNP Paribas Investment Partners S.A.2,813,363$189
CHARLES SCHWAB INVESTMENT MANAGEMENT INC2,663,099$179,067
UBS ASSET MANAGEMENT AMERICAS INC2,432,817$163,583
BARCLAYS PLC2,321,700$156,111
DIMENSIONAL FUND ADVISORS LP2,319,754$155,995
TIGER GLOBAL MANAGEMENT LLC2,259,109$151,902
T. Rowe Price Investment Management, Inc.2,254,457$152
Fayez Sarofim & Co2,241,437$150,714
UBS Group AG2,111,290$141,963
BLAIR WILLIAM & CO/IL2,023,523$136,062
RGM Capital, LLC1,995,460$134,175
BROWN ADVISORY INC1,906,345$128,183
JUPITER ASSET MANAGEMENT LTD1,863,704$125,315
DEUTSCHE BANK AG\1,775,803$119,405
MACKENZIE FINANCIAL CORP1,660,715$112,474
TREMBLANT CAPITAL GROUP1,635,964$110,002
Spyglass Capital Management LLC1,578,449$106,135
CITIGROUP INC1,502,021$100,996
RIVERBRIDGE PARTNERS LLC1,452,546$97,669
VIKING GLOBAL INVESTORS LP1,442,582$96,999
CIBC Private Wealth Group, LLC1,361,651$91,557
ENVESTNET ASSET MANAGEMENT INC1,335,852$89,823
FEDERATED HERMES, INC.1,322,999$88,958
ROYAL BANK OF CANADA1,307,942$87,945
NOMURA HOLDINGS INC1,234,117$82,982
FMR LLC1,202,153$80,833
PRICE T ROWE ASSOCIATES INC /MD/1,198,832$81
Capitolis Liquid Global Markets LLC1,184,000$79,612
FRANKLIN RESOURCES INC1,162,422$78,161
Swiss National Bank1,160,965$78,063
Stephens Investment Management Group LLC1,114,972$74,971
Mitsubishi UFJ Kokusai Asset Management Co., Ltd.1,057,184$69,446
Pictet Asset Management Holding SA1,055,508$70,973
Sumitomo Mitsui Trust Holdings, Inc.999,684$67,219
BNP PARIBAS ARBITRAGE, SA997,813$67,093
HSBC HOLDINGS PLC987,270$66,392
ShawSpring Partners LLC957,557$64,386
HARDING LOEVNER LP920,272$61,874
D. E. Shaw & Co., Inc.905,488$60,885
KENSICO CAPITAL MANAGEMENT CORP901,600$60,624
WELLS FARGO & COMPANY/MN880,972$59,237
Focus Partners Wealth841,115$56,557
Chicago Capital, LLC827,123$55,616
AMERICAN CAPITAL MANAGEMENT INC825,340$55,496
SG Capital Management LLC811,181$54,544
TimesSquare Capital Management, LLC809,321$54,419
Squarepoint Ops LLC795,563$53,494
JPMORGAN CHASE & CO772,040$51,912
RHUMBLINE ADVISERS768,835$51,696
ProShare Advisors LLC753,672$50,677
PEREGRINE CAPITAL MANAGEMENT LLC748,873$50,354
CANADA PENSION PLAN INVESTMENT BOARD741,403$49,852
CALIFORNIA PUBLIC EMPLOYEES RETIREMENT SYSTEM731,971$49,218
WEITZ INVESTMENT MANAGEMENT, INC.719,850$48,403
FIRST TRUST ADVISORS LP703,358$47,294
Douglas Lane & Associates, LLC683,061$45,929
CALIFORNIA STATE TEACHERS RETIREMENT SYSTEM682,638$45,901
National Pension Service682,119$45,866
FIL Ltd639,883$43,026
KAYNE ANDERSON RUDNICK INVESTMENT MANAGEMENT LLC635,720$42,746
Petrus Trust Company, LTA629,198$42,307
SEI INVESTMENTS CO621,779$41,809
Junto Capital Management LP615,998$41,420
AMERIPRISE FINANCIAL INC615,038$41,355
CITADEL ADVISORS LLC604,543$40,649
MILLENNIUM MANAGEMENT LLC601,975$40,477
CAISSE DE DEPOT ET PLACEMENT DU QUEBEC587,098$39,476
Ensign Peak Advisors, Inc578,356$38,889
Russell Investments Group, Ltd.547,600$36,840
RAYMOND JAMES FINANCIAL INC509,367$34,250
Mitsubishi UFJ Trust & Banking Corp477,836$32,130
ION Fund Management Ltd461,000$30,998
TD Asset Management Inc457,565$30,767
732 other institutions36,748,691$2,237,817
Total (832 institutions)407,291,122$26,427,176