13F

Stock

Costar Group, Inc.

CSGP · held by 787 managers

Reported value

$16.1B

Holders

787

+112 new · −167 exited

Holders’ est. mark

−$6.86B

Price effect on 222 books still in the name

Largest holder

$1.54B

VANGUARD PORTFOLIO MANAGEMENT LLC

Notable conviction

Share of each notable manager’s 13F book.

Holder count by quarter

Who holds it

Notable only
InvestorSharesValueEst. markChange
VANGUARD PORTFOLIO MANAGEMENT LLC38.2M$1.54BHeld
BlackRock, Inc.33.8M$1.36B−$909.4MCut−$920.4M
VANGUARD CAPITAL MANAGEMENT LLC27.4M$1.11BHeld
State Street18.7M$752.4M−$501.2MCut−$500.5M
PRINCIPAL FINANCIAL GROUP INC17.7M$713.9M−$472.5MCut−$467.3M
BAMCO INC /NY/16.3M$658.1M−$438.9MCut−$652.9M
Capital International Investors15.5M$625.8M−$291.7MCut−$103.2M
BAILLIE GIFFORD & CO13.6M$549.1M−$347.9MCut−$320.6M
POLEN CAPITAL MANAGEMENT LLC12.6M$507.1M−$131.6MAdded$178.2M
GEODE CAPITAL MANAGEMENT, LLC12.4M$500.4M−$326.5MCut−$315.8M
AKRE CAPITAL MANAGEMENT LLC10.3M$417.4M−$258.7MCut−$229.3M
GOLDMAN SACHS GROUP INC9.25M$373M−$100.9MAdded$120.7M
JANUS HENDERSON GROUP PLC7.72M$311.6M−$201MCut−$190.9M
Invesco Ltd.7.14M$287.9M−$144.9MCut−$74.3M
D. E. Shaw & Co., Inc.5.91M$238.4M−$24.4MAdded$177.5M
MORGAN STANLEY5.41M$218.3M−$142.3MCut−$137.4M
Capital Research Global Investors4.37M$176.4M−$117.6MCut−$197.9M
BANK OF AMERICA CORP /DE/3.57M$143.9M−$94.3MCut−$91.7M
NORTHERN TRUST CORP3.43M$138.5M−$92.3MCut−$94.6M
Meritage Group LP3.33M$134.3MNew
Amundi3.28M$132.3M−$88.3MCut−$144.3M
Legal & General Group Plc3.03M$122M−$77MCut−$70.3M
BECK MACK & OLIVER LLC2.93M$118.1M−$59.8MCut−$31.5M
CHARLES SCHWAB INVESTMENT MANAGEMENT INC2.87M$115.9M−$71.6MCut−$63.1M
Fidelity2.83M$114.2M−$32.3MAdded$33.4M
Ensign Peak Advisors, Inc2.73M$110.3M−$15.6MAdded$71.4M
BNP PARIBAS ASSET MANAGEMENT Holding S.A.2.68M$107.9M$107.7MAdded$107.7M
BANK OF MONTREAL /CAN/2.49M$100.4M−$12.2MAdded$69.8M
UBS AM, a distinct business unit of UBS ASSET MANAGEMENT AMERICAS LLC2.43M$97.9M−$65.3MCut−$65.7M
DIMENSIONAL FUND ADVISORS LP2.4M$96.9M−$62.4MCut−$59.1M
Bank of New York Mellon Corp2.4M$96.8M−$64.6MCut−$179.7M
VANGUARD FIDUCIARY TRUST CO2.39M$96.5MHeld
NOMURA ASSET MANAGEMENT INTERNATIONAL INC.2.33M$94.1M−$62.8MCut−$168.7M
CANADA PENSION PLAN INVESTMENT BOARD2.01M$81.1M−$19.9MAdded$31.3M
Nuveen, LLC1.93M$77.9M−$51.9MCut−$161.5M
DEUTSCHE BANK AG\1.9M$76.6M−$47.8MCut−$42.8M
JPMORGAN CHASE & CO1.85M$75.6M−$20.4MAdded$23.7M
ENVESTNET ASSET MANAGEMENT INC1.8M$72.7M−$35.9MCut−$17.1M
MACKENZIE FINANCIAL CORP1.64M$66.1M−$44.9MCut−$46.4M
DF DENT & CO INC1.61M$64.8M−$43.2MCut−$70.2M
TREMBLANT CAPITAL GROUP1.51M$60.8M−$40.5MCut−$49.2M
Tiger Global1.5M$60.5M−$40.3MCut−$91.4M
ROYAL BANK OF CANADA1.44M$57.9M−$35.2MCut−$30M
WELLS FARGO & COMPANY/MN1.4M$56.6M−$23.7MCut−$2.66M
Greenhouse Funds LLLP1.38M$55.6MNew
Pictet Asset Management Holding SA1.37M$55.4M−$28.4MCut−$15.6M
CAPITOLIS LIQUID GLOBAL MARKETS LLC1.35M$54.7MHeld
HSBC HOLDINGS PLC1.35M$54.4M−$26.5MCut−$12M
VOLORIDGE INVESTMENT MANAGEMENT, LLC1.33M$53.7MNew
UBS Group AG1.33M$53.5M−$35.7MCut−$88.5M
FEDERATED HERMES, INC.1.3M$52.4M−$34.9MCut−$36.6M
Icahn Capital1.26M$50.9M−$9.94MAdded$26.1M
Swiss National Bank1.24M$50.2M−$31.2MCut−$27.9M
BARCLAYS PLC1.23M$49.7M−$33.1MCut−$106.4M
RIVERBRIDGE PARTNERS LLC1.23M$49.5M−$33MCut−$48.2M
Spyglass Capital Management LLC1.11M$44.8M−$29.9MCut−$61.3M
Citadel1.09M$43.9M−$16.3MAdded$3.25M
JANE STREET GROUP, LLC1.09M$43.9M−$6.39MAdded$27.9M
Chicago Capital, LLC1.06M$42.6M−$22.2MCut−$13M
Mitsubishi UFJ Asset Management Co., Ltd.1.05M$42.4M−$26.7MCut−$27M
MASSACHUSETTS FINANCIAL SERVICES CO /MA/956.1K$39.2M−$25MCut−$173.2M
Sumitomo Mitsui Trust Group, Inc.954.1K$38.5M−$25.7MCut−$28.7M
CITIGROUP INC953.6K$38.5M−$25.7MCut−$62.5M
Vanguard Global Advisers, LLC928.3K$37.4MHeld
Focus Partners Wealth922.1K$37.2M−$22.6MCut−$19.4M
BLAIR WILLIAM & CO/IL900.3K$36.3M−$24.2MCut−$99.7M
Stephens Investment Management Group LLC872.5K$35.2M−$23.5MCut−$39.8M
Corvex Management LP851.7K$34.4MNew
FIRST TRUST ADVISORS LP839K$33.8M−$18.9MCut−$13.4M
AMERICAN CAPITAL MANAGEMENT INC825.3K$33.3M−$22.2MCut−$22.2M
Douglas Lane & Associates, LLC803.8K$32.4M−$18.4MCut−$13.5M
PRIMECAP MANAGEMENT CO/CA/803.6K$32.4M−$4.06MAdded$22.3M
TimesSquare Capital Management, LLC795.6K$32.1M−$21.4MCut−$22.3M
RHUMBLINE ADVISERS792.8K$32M−$20.7MCut−$19.7M
Squarepoint Ops LLC782.6K$31.6M−$21.1MCut−$21.9M
BNP PARIBAS FINANCIAL MARKETS768.7K$31M−$20.7MCut−$36.1M
Petrus Trust Company, LTA756.2K$30.5M−$16.9MCut−$11.8M
VANGUARD ASSET MANAGEMENT, Ltd717.7K$29MHeld
NZS Capital, LLC709.4K$28.6M−$11.9MCut−$1.06M
National Pension Service702.7K$28.3M−$18.3MCut−$17.5M
PEREGRINE CAPITAL MANAGEMENT LLC699.2K$28.2M−$18.8MCut−$22.2M
AMERIPRISE FINANCIAL INC687.8K$27.7M−$16.6MCut−$13.6M
ALLIANCEBERNSTEIN L.P.407.5K$27.4M−$0Cut−$986.1K
CALIFORNIA STATE TEACHERS RETIREMENT SYSTEM667.1K$26.9M−$17.9MCut−$19M
Ardmore Road Asset Management LP666.9K$26.9MNew
RAYMOND JAMES FINANCIAL INC628.6K$25.4M−$13.7MCut−$8.89M
ProShare Advisors LLC611.3K$24.7M−$16.4MCut−$26M
Walleye Capital LLC536.8K$21.7M−$873.2KAdded$19.5M
California Public Employees Retirement System532.7K$21.5M−$14.3MCut−$27.7M
MARSHALL WACE, LLP517.3K$20.9M−$10.5MCut−$5.45M
WEITZ INVESTMENT MANAGEMENT, INC.517K$20.9M−$13.9MCut−$27.5M
Prana Capital Management, LP515.4K$20.8M−$8.52MCut−$515K
CIBC Bancorp USA Inc.500.1K$20.2MHeld
Weiss Asset Management LP497.5K$20.1M−$923.2KAdded$17.8M
RUSH ISLAND MANAGEMENT, LP483.2K$19.5MNew
Fiera Capital Corp481.7K$19.4M−$9.44MCut−$4.16M
Erste Asset Management GmbH450K$18.4M−$8.44MCut−$3.12M
Gotham Asset Management, LLC447K$18M−$3.51MAdded$9.27M
GENEVA CAPITAL MANAGEMENT LLC437.5K$17.6M−$11.8MCut−$12.7M
ROYAL LONDON ASSET MANAGEMENT LTD431.9K$17.4M−$11MCut−$10.1M
Mitsubishi UFJ Trust & Banking Corp423.6K$17.1M−$11.4MCut−$15M
Ninety One UK Ltd415K$16.7M−$9.54MCut−$7.12M
OSSIAM387.5K$15.6M−$4.68MAdded$3.94M
SEI INVESTMENTS CO386.6K$15.6M−$10.4MCut−$26.2M
ADAGE CAPITAL PARTNERS GP, L.L.C.378.1K$15.3M−$10.2MCut−$10.5M
STATE BOARD OF ADMINISTRATION OF FLORIDA RETIREMENT SYSTEM376K$15.2M−$10.1MCut−$10.1M
JUPITER ASSET MANAGEMENT LTD375.7K$15.2M−$10.1MCut−$110.2M
Ironvine Capital Partners, LLC375.3K$15.1M−$9.99MCut−$9.82M
Fayez Sarofim & Co374.6K$15.1M−$10.1MCut−$135.6M
NEOS Investment Management LLC364.7K$14.7M−$7.83MCut−$4.85M
Russell Investments Group, Ltd.349.8K$14.1M−$9.4MCut−$22.7M
FIRST CITIZENS BANK & TRUST CO343.5K$13.9M−$6.92MCut−$3.45M
OPPENHEIMER ASSET MANAGEMENT INC.342.7K$13.8M−$6.46MCut−$2.31M
Quantinno Capital Management LP340.2K$13.7M−$5.44MAdded$129.4K
FIL Ltd339.6K$13.7M−$9.14MCut−$29.3M
ShawSpring Partners LLC339.1K$13.7M−$9.12MCut−$50.7M
BROWN ADVISORY INC337K$13.6M−$9.07MCut−$114.6M
VICTORY CAPITAL MANAGEMENT INC335.4K$13.5M−$9.01MCut−$8.99M
Envestnet Portfolio Solutions, Inc.324.4K$13.1M−$6.6MCut−$3.4M
Aberdeen Group plc319.5K$12.9M−$8.34MCut−$7.96M
Foster Victor Wealth Advisors, LLC340.8K$12.8M−$5.49MCut−$123.3K
Y-Intercept (Hong Kong) Ltd311.9K$12.6M−$571.7KAdded$11.2M
Rafferty Asset Management, LLC307.1K$12.4M−$6.53MCut−$3.94M
TWO SIGMA INVESTMENTS, LP303K$12.2MNew
BSN CAPITAL PARTNERS Ltd150.9K$11.8M$0Held
MIRAE ASSET GLOBAL ETFS HOLDINGS Ltd.291.7K$11.8M−$7.85MCut−$8.49M
STATE OF WISCONSIN INVESTMENT BOARD285.9K$11.5M−$6.15MCut−$3.83M
MIZUHO MARKETS AMERICAS LLC275.9K$11.1M−$7.42MCut−$285.8M
SUSQUEHANNA INTERNATIONAL GROUP, LLP254.3K$10.3M−$5.24MCut−$2.83M
LMR Partners LLP252.9K$10.2MNew
FORA Capital, LLC252.1K$10.2MNew
FRANKLIN RESOURCES INC249.6K$10.1M−$6.71MCut−$68.1M
Universal- Beteiligungs- und Servicegesellschaft mbH246.6K$10.1M−$6.62MCut−$8.09M
MANUFACTURERS LIFE INSURANCE COMPANY, THE248.7K$10M−$6.69MCut−$6.92M
STIFEL FINANCIAL CORP245.2K$9.89M−$6.5MCut−$6.36M
AVIVA PLC243.1K$9.8M−$6.54MCut−$9.17M
Mirae Asset Global Investments Co., Ltd.227.7K$9.18M−$5.65MCut−$4.94M
Tsai Capital Corp226.7K$9.15MNew
Lighthouse Investment Partners, LLC219.4K$8.85M−$3.35MAdded$478.8K
S.E.E.D. Planning Group LLC219.1K$8.84M−$1.26MAdded$5.68M
NICHOLAS COMPANY, INC.214.3K$8.64M−$5.76MCut−$5.76M
TD Asset Management Inc212.4K$8.57M−$5.71MCut−$22.2M
Vanguard Investments Australia, Ltd.211K$8.51MHeld
Chevy Chase Trust Holdings, LLC209K$8.43M−$5.62MCut−$6.03M
KORNITZER CAPITAL MANAGEMENT INC /KS207.8K$8.38M−$5.59MCut−$6.71M
DANSKE BANK A/S207.4K$8.37M−$5.58MCut−$6.31M
GLENMEDE TRUST CO NA207K$8.35M−$2.07MAdded$3.17M
PRUDENTIAL FINANCIAL INC206.1K$8.31M−$5.54MCut−$5.94M
NEW YORK STATE COMMON RETIREMENT FUND205.3K$8.28M−$5.52MCut−$7.04M
XTX Topco Ltd201.3K$8.12M−$93.5KAdded$7.89M
YCG, LLC196K$7.91M−$5.27MCut−$16.2M
Sone Capital Management, LLC189.3K$7.63M−$5.09MCut−$20.4M
Asset Management One Co., Ltd.185.5K$7.48M−$5MCut−$4.91M
Korea Investment CORP183.9K$7.42M−$4.95MCut−$6.37M
APG Asset Management N.V.210.3K$7.36M−$4.68MCut−$5.14M
CORTLAND ASSOCIATES INC/MO181K$7.3M−$4.87MCut−$5.01M
TUDOR INVESTMENT CORP ET AL179.3K$7.23M−$4.82MCut−$6.55M
CIBC Asset Management Inc177.1K$7.14M−$4.76MCut−$6.3M
Zurcher Kantonalbank (Zurich Cantonalbank)172.3K$6.95M−$4.63MCut−$5.02M
LBP AM SA171.8K$6.93M−$4.43MCut−$4.15M
NOMURA ASSET MANAGEMENT CO LTD164K$6.61M−$4.19MCut−$3.87M
Cerity Partners LLC162.5K$6.55M−$2.46MAdded$398.9K
Tredje AP-fonden161.7K$6.52M−$1.09MAdded$3.79M
Granahan Investment Management, LLC161K$6.5M−$2.47MAdded$315.3K
COMMONWEALTH OF PENNSYLVANIA PUBLIC SCHOOL EMPLS RETRMT SYS155.7K$6.28M−$2.65MCut−$346.8K
KLP KAPITALFORVALTNING AS153.3K$6.18M−$4.12MCut−$4.12M
Motley Fool Wealth Management, LLC153K$6.17M−$4.12MCut−$7.51M
State of New Jersey Common Pension Fund D145.3K$5.86M−$3.91MCut−$3.91M
NEEDHAM INVESTMENT MANAGEMENT LLC142K$5.73M−$1.63MAdded$1.66M
CREDIT AGRICOLE S A140.2K$5.66M−$3.77MCut−$5.48M
Lansforsakringar Fondforvaltning AB (publ)138.3K$5.58M−$3.66MCut−$3.57M
HEALTHCARE OF ONTARIO PENSION PLAN TRUST FUND136.7K$5.52M−$3.68MCut−$4.34M
Cetera Investment Advisers136.3K$5.5M−$3.67MCut−$4.66M
LOUISBOURG INVESTMENTS INC.175.1K$5.39M−$1.97MAdded$642.6K
TORONTO DOMINION BANK132.1K$5.33M−$3.55MCut−$4.9M
Daiwa Securities Group Inc.131.9K$5.32M$5.01MAdded$5.31M
Resona Asset Management Co.,Ltd.131K$5.3M−$3.37MCut−$3.13M
FJARDE AP-FONDEN /FOURTH SWEDISH NATIONAL PENSION FUND130.8K$5.28M−$2.09MAdded$52.7K
JONES FINANCIAL COMPANIES LLLP132.4K$5.26M−$103.6KAdded$5.01M
EVR Research LP130K$5.24MNew
TWINBEECH CAPITAL LP128K$5.16M−$80.7KAdded$4.96M
ArchPoint Investors127K$5.12MNew
HighTower Advisors, LLC124.2K$5.01M−$3.34MCut−$3.63M
MILLENNIUM MANAGEMENT LLC123.6K$4.99M−$3.32MCut−$35.5M
PUBLIC EMPLOYEES RETIREMENT SYSTEM OF OHIO122.9K$4.96M−$3.31MCut−$3.57M
PUBLIC SECTOR PENSION INVESTMENT BOARD120.6K$4.87M−$2.9MCut−$2.39M
LANDMARK INVESTMENT PARTNERS, L.P.120K$4.84M−$3.23MCut−$5.55M
LPL Financial LLC118.8K$4.79M−$3.16MCut−$3.1M
NISSAY ASSET MANAGEMENT CORP /JAPAN117.9K$4.76M−$3.09MCut−$2.97M
STATE OF MICHIGAN RETIREMENT SYSTEM116.5K$4.7M−$3.13MCut−$3.15M
Czech National Bank115.4K$4.66M−$3.01MCut−$2.86M
ARIZONA STATE RETIREMENT SYSTEM115.2K$4.65M−$3.1MCut−$3.18M
State of Tennessee, Department of Treasury114.3K$4.61M−$2.42MCut−$2.55M
Mariner, LLC109.5K$4.42M−$1.29MAdded$1.19M
Night Owl Capital Management, LLC109.2K$4.41M−$2.92MCut−$2.9M
Connor, Clark & Lunn Investment Management Ltd.107.7K$4.34MNew
ABN AMRO INVESTMENT SOLUTIONS103.9K$4.19M−$2.79MCut−$2.83M
Dash Acquisitions Inc.104.4K$4.18M−$1.09MCut−$464.8K
ASHFORD CAPITAL MANAGEMENT INC102.5K$4.13M−$2.76MCut−$12.5M
WINTON GROUP Ltd101.4K$4.09MNew
MetLife Investment Management, LLC101.3K$4.08M−$2.72MCut−$2.91M
IEQ CAPITAL, LLC99.2K$4M−$391.9KAdded$3.02M
Swedbank AB98.9K$3.99M−$2.66MCut−$16.4M
Creative Planning97.2K$3.92M−$1.47MAdded$258.4K
SVB WEALTH LLC96.1K$3.88M−$1.79MCut−$590.4K
BANK OF NOVA SCOTIA94.5K$3.81M−$2.18MCut−$1.64M
Holocene Advisors, LP93K$3.75MNew
GILDER GAGNON HOWE & CO LLC91.1K$3.67M−$2.45MCut−$12.5M
Retirement Systems of Alabama90K$3.63M−$2.42MCut−$2.43M
Rakuten Investment Management, Inc.88.3K$3.61M−$2.1MCut−$1.7M
GUGGENHEIM CAPITAL LLC88.4K$3.57M−$2.38MCut−$3.75M
DNB Asset Management AS88.2K$3.56M−$2.29MCut−$2.17M
GF FUND MANAGEMENT CO. LTD.86.9K$3.5M−$2.34MCut−$2.51M
NORDEA INVESTMENT MANAGEMENT AB87.2K$3.48M−$1.21MAdded$487.8K
IFM Investors Pty Ltd85.7K$3.46M$3.34MAdded$3.45M
Oak Thistle LLC84.9K$3.42M−$546.4KAdded$2.06M
PNC Financial Services Group, Inc.84.7K$3.42M−$2.05MCut−$1.71M
VOYA INVESTMENT MANAGEMENT LLC84.5K$3.41M−$2.27MCut−$2.28M
EXCHANGE TRADED CONCEPTS, LLC84.4K$3.41M−$1.8MCut−$1.09M
CAXTON ASSOCIATES LLP83.9K$3.39MNew
SEB Asset Management AB83.4K$3.36MHeld
Woodline Partners LP83K$3.35M−$1.95MCut−$1.51M
Atria Investments, Inc81.8K$3.3M−$1.1MAdded$557.4K
Solidarity Wealth, LLC81.3K$3.28M−$1.63MCut−$799.6K
STRS OHIO81K$3.27M−$2.18MCut−$2.18M
FIFTH THIRD BANCORP80.7K$3.26M−$211.6KAdded$2.73M
MML INVESTORS SERVICES, LLC80.2K$3.24M−$2.16MCut−$2.97M
MIROVA78.5K$3.17MNew
Corient Private Wealth LLC79.4K$3.16M−$2.18MCut−$2.69M
USS Investment Management Ltd78K$3.14M−$2.01MCut−$1.87M
ICICI Prudential Asset Management Co Ltd77.6K$3.13M−$182.9KAdded$2.67M
PLATINUM INVESTMENT MANAGEMENT LTD77.5K$3.13M−$1.75MCut−$1.24M
XPONANCE LLC76.5K$3.09M−$1.81MCut−$1.43M
Edgestream Partners, L.P.74.4K$3M−$425.2KAdded$1.94M
Vanderbilt University73.8K$2.98M−$1.98MCut−$5.58M
Trexquant Investment LP73.1K$2.95MNew
Walleye Trading LLC72.5K$2.93M−$322.6KAdded$2.12M
Blue Zone Wealth Advisors, LLC71.5K$2.88M−$1.92MCut−$1.93M
Havemeyer Place LP71.1K$2.87M−$86.8KAdded$2.65M
Tower Research Capital LLC (TRC)70K$2.82M−$759.1KAdded$926.9K
Utah Retirement Systems67.8K$2.73M−$1.82MCut−$1.9M
HB Wealth Management, LLC66.5K$2.68M−$1.79MCut−$2.28M
Linden Thomas Advisory Services, LLC66.1K$2.66M−$1.1MCut−$79.2K
Man Group plc64.7K$2.61M−$1.74MCut−$12.5M
Buttonwood Financial Advisors Inc.64.6K$2.61M−$190.5KAdded$2.13M
Police & Firemen's Retirement System of New Jersey64.1K$2.59M−$1.72MCut−$1.71M
AMERICAN CENTURY COMPANIES INC62K$2.5M−$1.67MCut−$2.65M
NEUBERGER BERMAN GROUP LLC61.1K$2.46M−$1.64MCut−$8.94M
US BANCORP \DE\59.3K$2.39M−$1.59MCut−$1.94M
IVY LANE CAPITAL MANAGEMENT, LLC59K$2.38MNew

Who left

Positions as of Q1 2026. 13F filings arrive up to 45 days after quarter-end and omit shorts. Values are quarter-end marks, as filed. Estimated mark is the price effect on shares still held — not realized P&L or investment advice.