13F

Stock

Costar Group, Inc.

CSGP · held by 845 managers

Reported value

$26.7B

Holders

845

+3 new · −5 exited

Holders’ est. mark

−$238.1M

Price effect on 5 books still in the name

Largest holder

$4.71B

Vanguard

Notable conviction

Share of each notable manager’s 13F book.

Holder count by quarter

Who holds it

Notable only
InvestorSharesValueEst. markChange
Vanguard70.1M$4.71BHeld
BlackRock, Inc.34M$2.28BHeld
BAMCO INC /NY/19.5M$1.31BHeld
State Street18.6M$1.25BHeld
PRINCIPAL FINANCIAL GROUP INC17.6M$1.18BHeld
BAILLIE GIFFORD & CO12.9M$869.6MHeld
GEODE CAPITAL MANAGEMENT, LLC12.2M$816.2MHeld
Capital International Investors10.8M$729MHeld
AKRE CAPITAL MANAGEMENT LLC9.62M$646.7MHeld
JANUS HENDERSON GROUP PLC7.47M$502.5MHeld
NORGES BANK7.09M$476.8M−$63.2MAdded$59.3M
Capital Research Global Investors5.57M$374.3MHeld
Invesco Ltd.5.39M$362.2MHeld
MORGAN STANLEY5.29M$355.8M−$90.6MCut−$365M
POLEN CAPITAL MANAGEMENT LLC4.89M$328.9MHeld
MIZUHO MARKETS AMERICAS LLC4.42M$296.9MHeld
Amundi4.11M$276.7MHeld
Bank of New York Mellon Corp4.11M$276.6MHeld
NOMURA ASSET MANAGEMENT INTERNATIONAL INC.3.91M$262.9MHeld
GOLDMAN SACHS GROUP INC3.75M$252.3MHeld
Nuveen, LLC3.56M$239.4MHeld
BANK OF AMERICA CORP /DE/3.5M$235.7M−$60MCut−$76.2M
NORTHERN TRUST CORP3.47M$233.1MHeld
Third Point3.17M$212.8MHeld
MASSACHUSETTS FINANCIAL SERVICES CO /MA/3.16M$212.5MHeld
Legal & General Group Plc2.86M$192.4MHeld
CHARLES SCHWAB INVESTMENT MANAGEMENT INC2.66M$179.1MHeld
UBS AM, a distinct business unit of UBS ASSET MANAGEMENT AMERICAS LLC2.43M$163.6MHeld
BARCLAYS PLC2.32M$156.1M−$21.7MAdded$49.3M
DIMENSIONAL FUND ADVISORS LP2.32M$156MHeld
Tiger Global2.26M$151.9MHeld
Fayez Sarofim & Co2.24M$150.7MHeld
BECK MACK & OLIVER LLC2.22M$149.6MHeld
UBS Group AG2.11M$142MHeld
BLAIR WILLIAM & CO/IL2.02M$136.1MHeld
DF DENT & CO INC2.01M$135MHeld
RGM Capital, LLC2M$134.2MHeld
BROWN ADVISORY INC1.91M$128.2MHeld
JUPITER ASSET MANAGEMENT LTD1.86M$125.3MHeld
DEUTSCHE BANK AG\1.78M$119.4MHeld
MACKENZIE FINANCIAL CORP1.66M$112.5MHeld
TREMBLANT CAPITAL GROUP1.64M$110MHeld
Spyglass Capital Management LLC1.58M$106.1MHeld
CITIGROUP INC1.5M$101MHeld
RIVERBRIDGE PARTNERS LLC1.45M$97.7MHeld
Viking Global1.44M$97MHeld
CIBC Private Wealth Group LLC1.36M$91.6MHeld
ENVESTNET ASSET MANAGEMENT INC1.34M$89.8MHeld
FEDERATED HERMES, INC.1.32M$89MHeld
ROYAL BANK OF CANADA1.31M$87.9MHeld
NOMURA HOLDINGS INC1.23M$83MHeld
Fidelity1.2M$80.8MHeld
Capitolis Liquid Global Markets LLC1.18M$79.6MHeld
FRANKLIN RESOURCES INC1.16M$78.2MHeld
Swiss National Bank1.16M$78.1MHeld
Stephens Investment Management Group LLC1.11M$75MHeld
Pictet Asset Management Holding SA1.06M$71MHeld
Mitsubishi UFJ Asset Management Co., Ltd.1.06M$69.4MHeld
Sumitomo Mitsui Trust Group, Inc.999.7K$67.2MHeld
BNP PARIBAS FINANCIAL MARKETS997.8K$67.1MHeld
HSBC HOLDINGS PLC987.3K$66.4MHeld
ShawSpring Partners LLC957.6K$64.4MHeld
Harding Loevner LP920.3K$61.9MHeld
D. E. Shaw & Co., Inc.905.5K$60.9MHeld
KENSICO CAPITAL MANAGEMENT CORP901.6K$60.6MHeld
WELLS FARGO & COMPANY/MN881K$59.2MHeld
Focus Partners Wealth841.1K$56.6MHeld
Chicago Capital, LLC827.1K$55.6MHeld
AMERICAN CAPITAL MANAGEMENT INC825.3K$55.5MHeld
SG Capital Management LLC811.2K$54.5MHeld
TimesSquare Capital Management, LLC809.3K$54.4MHeld
Squarepoint Ops LLC795.6K$53.5MHeld
JPMORGAN CHASE & CO772K$51.9MHeld
RHUMBLINE ADVISERS768.8K$51.7MHeld
ProShare Advisors LLC753.7K$50.7MHeld
PEREGRINE CAPITAL MANAGEMENT LLC748.9K$50.4MHeld
CANADA PENSION PLAN INVESTMENT BOARD741.4K$49.9MHeld
California Public Employees Retirement System732K$49.2MHeld
WEITZ INVESTMENT MANAGEMENT, INC.719.9K$48.4MHeld
FIRST TRUST ADVISORS LP703.4K$47.3MHeld
Douglas Lane & Associates, LLC683.1K$45.9MHeld
CALIFORNIA STATE TEACHERS RETIREMENT SYSTEM682.6K$45.9MHeld
National Pension Service682.1K$45.9MHeld
FIL Ltd639.9K$43MHeld
KAYNE ANDERSON RUDNICK INVESTMENT MANAGEMENT LLC635.7K$42.7MHeld
Petrus Trust Company, LTA629.2K$42.3MHeld
SEI INVESTMENTS CO621.8K$41.8MHeld
Junto Capital Management LP616K$41.4MHeld
AMERIPRISE FINANCIAL INC615K$41.4MHeld
Citadel604.5K$40.6MHeld
MILLENNIUM MANAGEMENT LLC602K$40.5MHeld
Caisse de depot et placement du Quebec587.1K$39.5MHeld
Ensign Peak Advisors, Inc578.4K$38.9MHeld
Russell Investments Group, Ltd.547.6K$36.8MHeld
RAYMOND JAMES FINANCIAL INC509.4K$34.2MHeld
Mitsubishi UFJ Trust & Banking Corp477.8K$32.1MHeld
ION Fund Management Ltd461K$31MHeld
TD Asset Management Inc457.6K$30.8MHeld
BANK OF MONTREAL /CAN/454K$30.5MHeld
GENEVA CAPITAL MANAGEMENT LLC450.8K$30.3MHeld
NZS Capital, LLC441.4K$29.7MHeld
ALLIANCEBERNSTEIN L.P.422.2K$28.4MHeld
Sone Capital Management, LLC417.1K$28MHeld
ROYAL LONDON ASSET MANAGEMENT LTD409.6K$27.5MHeld
MARSHALL WACE, LLP391.3K$26.3MHeld
ADAGE CAPITAL PARTNERS GP, L.L.C.382.6K$25.7MHeld
Clearbridge Investments, LLC382.1K$25.7MHeld
STATE BOARD OF ADMINISTRATION OF FLORIDA RETIREMENT SYSTEM376K$25.3MHeld
Ironvine Capital Partners, LLC371.2K$25MHeld
Icahn Capital369.4K$24.8MHeld
YCG, LLC359.2K$24.2MHeld
Ninety One UK Ltd354.8K$23.9MHeld
NATIONAL BANK OF CANADA /FI/353.6K$23.8MHeld
LGT Group Foundation347.7K$23.6MHeld
Fiera Capital Corp350.9K$23.6MHeld
CI INVESTMENTS INC.343.5K$23.1MHeld
Aureus Asset Management, LLC337.1K$22.7MHeld
VICTORY CAPITAL MANAGEMENT INC335K$22.5MHeld
Ulysses Management LLC330.5K$22.2MHeld
Erste Asset Management GmbH320K$21.5MHeld
Prana Capital Management, LP316.9K$21.3MHeld
Aberdeen Group plc310.1K$20.8MHeld
Swedbank AB303.2K$20.4MHeld
MIRAE ASSET GLOBAL ETFS HOLDINGS Ltd.301.2K$20.3MHeld
NEOS Investment Management LLC291K$19.6MHeld
AVIVA PLC282.2K$19MHeld
PARNASSUS INVESTMENTS, LLC272.7K$18.3MHeld
Universal- Beteiligungs- und Servicegesellschaft mbH268.4K$18.1MHeld
FIRST CITIZENS BANK & TRUST CO257.4K$17.3MHeld
MANUFACTURERS LIFE INSURANCE COMPANY, THE252.2K$17MHeld
ASHFORD CAPITAL MANAGEMENT INC248K$16.7MHeld
Envestnet Portfolio Solutions, Inc.245.2K$16.5MHeld
Rafferty Asset Management, LLC242.8K$16.3MHeld
ThornTree Capital Partners LP242K$16.3MHeld
STIFEL FINANCIAL CORP241.7K$16.3MHeld
GILDER GAGNON HOWE & CO LLC240K$16.1MHeld
No Street GP LP240K$16.1MHeld
OPPENHEIMER ASSET MANAGEMENT INC.240K$16.1MHeld
JANE STREET GROUP, LLC237.4K$16MHeld
TRAN CAPITAL MANAGEMENT, L.P.233.3K$15.7MHeld
STATE OF WISCONSIN INVESTMENT BOARD228.5K$15.4MHeld
NEW YORK STATE COMMON RETIREMENT FUND227.8K$15.3MHeld
Man Group plc225.3K$15.1MHeld
UMB Bank, n.a.224.6K$15.1MHeld
KORNITZER CAPITAL MANAGEMENT INC /KS224.4K$15.1MHeld
Quantum Capital Management, LLC / NJ218.6K$14.7MHeld
DANSKE BANK A/S218.4K$14.7M−$2.56MCut−$949.7K
Chevy Chase Trust Holdings, LLC215.1K$14.5MHeld
NS Partners Ltd215K$14.5MHeld
Visualize Group LP214.4K$14.4MHeld
NICHOLAS COMPANY, INC.214.2K$14.4MHeld
PRUDENTIAL FINANCIAL INC212K$14.3MHeld
Mirae Asset Global Investments Co., Ltd.210.1K$14.1MHeld
Korea Investment CORP205.1K$13.8MHeld
TUDOR INVESTMENT CORP ET AL205K$13.8MNew
Motley Fool Wealth Management, LLC203.4K$13.7MHeld
Quantinno Capital Management LP202.1K$13.6MHeld
Freestone Grove Partners LP201.2K$13.5MHeld
CIBC Asset Management Inc199.9K$13.4MHeld
SUSQUEHANNA INTERNATIONAL GROUP, LLP194.7K$13.1MHeld
Foster Victor Wealth Advisors, LLC198K$12.9MHeld
CIBC WORLD MARKETS CORP186.1K$12.5MHeld
APG Asset Management N.V.218.4K$12.5MHeld
Asset Management One Co., Ltd.183.4K$12.4MHeld
CORTLAND ASSOCIATES INC/MO183.1K$12.3MHeld
Allspring Global Investments Holdings, LLC182.9K$12MHeld
Zurcher Kantonalbank (Zurich Cantonalbank)178K$12MHeld
BSN CAPITAL PARTNERS Ltd150.9K$11.8MHeld
OSSIAM173.9K$11.7MHeld
NEUBERGER BERMAN GROUP LLC169.7K$11.4MHeld
Badgley Phelps Wealth Managers, LLC166.3K$11.2MHeld
CREDIT AGRICOLE S A165.7K$11.1MHeld
JENNISON ASSOCIATES LLC165K$11.1MHeld
LBP AM SA164.9K$11.1MHeld
Clearstead Advisors, LLC160.5K$10.8MHeld
NOMURA ASSET MANAGEMENT CO LTD155.9K$10.5MHeld
LANDMARK INVESTMENT PARTNERS, L.P.154.5K$10.4MHeld
KLP KAPITALFORVALTNING AS153.3K$10.3MHeld
TORONTO DOMINION BANK152.2K$10.2MHeld
Cetera Investment Advisers151K$10.2MHeld
PRIMECAP MANAGEMENT CO/CA/151K$10.2MHeld
HEALTHCARE OF ONTARIO PENSION PLAN TRUST FUND146.5K$9.85MHeld
State of New Jersey Common Pension Fund D145.3K$9.77MHeld
ExodusPoint Capital Management, LP139.3K$9.37MHeld
Lansforsakringar Fondforvaltning AB (publ)136K$9.15MHeld
Gotham Asset Management, LLC130.3K$8.76MHeld
HighTower Advisors, LLC128.5K$8.64MHeld
Vanderbilt University127.3K$8.56MHeld
PUBLIC EMPLOYEES RETIREMENT SYSTEM OF OHIO126.8K$8.53MHeld
Resona Asset Management Co.,Ltd.125.3K$8.43MHeld
Lighthouse Investment Partners, LLC124.5K$8.37MHeld
Clearline Capital LP118K$7.94MHeld
LPL Financial LLC117.4K$7.9MHeld
STATE OF MICHIGAN RETIREMENT SYSTEM116.8K$7.85MHeld
ARIZONA STATE RETIREMENT SYSTEM116.4K$7.83MHeld
NISSAY ASSET MANAGEMENT CORP /JAPAN114.9K$7.73MHeld
FRED ALGER MANAGEMENT, LLC112.4K$7.55MHeld
Czech National Bank111.8K$7.51MHeld
GUGGENHEIM CAPITAL LLC108.8K$7.32MHeld
Night Owl Capital Management, LLC108.6K$7.3MHeld
2Xideas AG108.3K$7.28MHeld
PUBLIC SECTOR PENSION INVESTMENT BOARD107.9K$7.26MHeld
State of Tennessee, Department of Treasury116.5K$7.16MHeld
KELLY LAWRENCE W & ASSOCIATES INC/CA106.3K$7.15MHeld
ABN AMRO INVESTMENT SOLUTIONS104.3K$7.02MHeld
MetLife Investment Management, LLC104K$6.99MHeld
Greenvale Capital LLP100K$6.72MHeld
COMMONWEALTH OF PENNSYLVANIA PUBLIC SCHOOL EMPLS RETRMT SYS98.6K$6.63MHeld
Azimuth Capital Investment Management LLC94.1K$6.32MHeld
EQUITABLE TRUST CO93.6K$6.29MHeld
MML INVESTORS SERVICES, LLC92.3K$6.2MHeld
Granahan Investment Management, LLC91.9K$6.18MHeld
Cerity Partners LLC91.5K$6.16MHeld
Retirement Systems of Alabama90.2K$6.06MHeld
GF FUND MANAGEMENT CO. LTD.89.4K$6.01MHeld
Itau Unibanco Holding S.A.87.7K$5.9MHeld
Corient Private Wealth LLC87K$5.85MHeld
DNB Asset Management AS85.2K$5.73MHeld
VOYA INVESTMENT MANAGEMENT LLC84.7K$5.69MHeld
FORSTA AP-FONDEN82.4K$5.54MHeld
TRUIST FINANCIAL CORP82.2K$5.53MHeld
Skandinaviska Enskilda Banken AB (publ)81.3K$5.46MHeld
BANK OF NOVA SCOTIA81K$5.45MHeld
STRS OHIO81K$5.45MHeld
Rakuten Investment Management, Inc.78.6K$5.31MHeld
STOREBRAND ASSET MANAGEMENT AS77.7K$5.23MHeld
FJARDE AP-FONDEN /FOURTH SWEDISH NATIONAL PENSION FUND77.7K$5.22MHeld
GLENMEDE TRUST CO NA77K$5.18MHeld
AMERICAN CENTURY COMPANIES INC76.6K$5.15MHeld
PNC Financial Services Group, Inc.76.3K$5.13MHeld
BRITISH COLUMBIA INVESTMENT MANAGEMENT Corp75.1K$5.05MHeld
USS Investment Management Ltd74.6K$5.02MHeld
HB Wealth Management, LLC73.8K$4.96MHeld
Woodline Partners LP72.3K$4.86MHeld
LOS ANGELES CAPITAL MANAGEMENT LLC69.4K$4.83MHeld
Sumitomo Mitsui DS Asset Management Company, Ltd71.6K$4.81MHeld
Blue Zone Wealth Advisors, LLC71.6K$4.81MHeld
LOUISBOURG INVESTMENTS INC.90.3K$4.74MHeld
MACQUARIE GROUP LTD69.7K$4.69MHeld
Dash Acquisitions Inc.88.8K$4.65MHeld
Utah Retirement Systems68.9K$4.63MHeld
Robeco Institutional Asset Management B.V.68.2K$4.58MHeld
XPONANCE LLC67.2K$4.52MHeld
EXCHANGE TRADED CONCEPTS, LLC66.9K$4.5MHeld
SVB WEALTH LLC66.4K$4.47MHeld
PLATINUM INVESTMENT MANAGEMENT LTD65K$4.37MHeld
ING GROEP NV64.8K$4.36MHeld
US BANCORP \DE\64.5K$4.34MHeld
Pacer Advisors, Inc.64.3K$4.33MHeld
Eurizon Capital SGR S.p.A.64.3K$4.32MHeld

Who left

Positions as of Q4 2025. 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.