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Costar Group, Inc.

CSGP
Exchange
Nasdaq
Industry
Services-Business Services, NEC
SEC CIK
0001057352

In the last 90 days, Costar Group, Inc. insiders filed 1 open-market purchase and 2 sales; 760 institutions reported holding it in 13F filings for Q2 2026, worth $11.7B in total; superinvestors Akre Capital Management and Weitz Investment Management hold it.

13F holders, Q1 2024

Institutional positions in Costar Group, Inc. as of Mar 31, 2024. Investment managers with $100 million or more in US stocks report their long positions on Form 13F within 45 days after each quarter ends. How 13F works

Institutional holders
767
+36 vs. Q4 2023
Shares held
398.4M
+5.40M (+1.4%) vs. Q4 2023
Total value
$38.4B
+$4.10B (+12.0%) vs. Q4 2023
New holders
91
301 more added
Sold out
55
265 more reduced

6 institutions that held it in Q4 2023 haven't filed for Q1 2024 yet. Not filing isn't selling, so they aren't counted as sold out or in the changes above.

Compare with Q4 2023: new holders, sold out and not filed yet

Holders and value by quarter

Institutions reporting CSGP on Form 13F each quarter since Q1 2021, and the total value they reported. Values are as of each quarter end, so they also move with the share price.

Institutional holdersQ1 2024: 767 institutions
Q1 2021: 593 institutionsQ2 2021: 607 institutionsQ3 2021: 594 institutionsQ4 2021: 633 institutionsQ1 2022: 589 institutionsQ2 2022: 591 institutionsQ3 2022: 634 institutionsQ4 2022: 704 institutionsQ1 2023: 692 institutionsQ2 2023: 714 institutionsQ3 2023: 690 institutionsQ4 2023: 737 institutionsQ1 2024: 767 institutionsQ2 2024: 767 institutionsQ3 2024: 773 institutionsQ4 2024: 805 institutionsQ1 2025: 858 institutionsQ2 2025: 873 institutionsQ3 2025: 905 institutionsQ4 2025: 847 institutionsQ1 2026: 797 institutionsQ2 2026: 760 institutions
Value heldQ1 2024: $38.4B
Q1 2021: $31.2BQ2 2021: $31.1BQ3 2021: $32.3BQ4 2021: $29.6BQ1 2022: $25.2BQ2 2022: $23.0BQ3 2022: $28.0BQ4 2022: $30.4BQ1 2023: $26.7BQ2 2023: $35.5BQ3 2023: $30.1BQ4 2023: $34.4BQ1 2024: $38.4BQ2 2024: $29.3BQ3 2024: $30.0BQ4 2024: $28.9BQ1 2025: $33.9BQ2 2025: $34.2BQ3 2025: $34.9BQ4 2025: $28.4BQ1 2026: $16.8BQ2 2026: $11.7B
Institutions holding CSGP and their total value by quarter
QuarterHoldersValue
Q2 2026760$11.7B
Q1 2026797$16.8B
Q4 2025847$28.4B
Q3 2025905$34.9B
Q2 2025873$34.2B
Q1 2025858$33.9B
Q4 2024805$28.9B
Q3 2024773$30.0B
Q2 2024767$29.3B
Q1 2024767$38.4B
Q4 2023737$34.4B
Q3 2023690$30.1B
Q2 2023714$35.5B
Q1 2023692$26.7B
Q4 2022704$30.4B
Q3 2022634$28.0B
Q2 2022591$23.0B
Q1 2022589$25.2B
Q4 2021633$29.6B
Q3 2021594$32.3B
Q2 2021607$31.1B
Q1 2021593$31.2B

Institutions, Q1 2024

Shares, value and share of portfolio for each institution holding Costar Group, Inc.; share changes are against Q4 2023.

Institutions holding CSGP in Q1 2024
InstitutionSharesValue% of portfolioChange in sharesAction
Vestcor Inc7,186$694.0K0.02%−1,287−15.2%Reduced
Proequities, Inc.7,200$695.5K0.04%−535−6.9%Reduced
BI Asset Management Fondsmaeglerselskab A/S7,228$698.0K0.01%+428+6.3%Added
Verdence Capital Advisors LLC7,368$711.7K0.06%+50+0.7%Added
Marsico Capital Management LLC7,375$712.4K0.02%+7,375New
Vinva Investment Management Ltd7,400$714.8K0.04%+7,400New
FDx Advisors, Inc.7,464$721.0K0.11%−3,624−32.7%Reduced
HB Wealth Management, LLC7,509$725.4K0.01%+417+5.9%Added
Nebula Research & Development LLC7,610$735.1K0.16%+7,610New
Knollwood Investment Advisory, LLC7,690$742.9K0.13%00.0%Unchanged
Degroof Petercam Asset Management7,700$743.8K0.01%00.0%Unchanged
Fifth Third Bancorp7,780$751.5K0.00%+385+5.2%Added
First Hawaiian Bank7,893$762.5K0.02%−1,236−13.5%Reduced
Vident Advisory, LLC8,021$774.8K0.02%+3,650+83.5%Added
Siemens Fonds Invest GmbH8,031$775.8K0.06%−10,016−55.5%Reduced
Brown Brothers Harriman & Co8,037$776.4K0.01%−5,867−42.2%Reduced
Empirical Finance, LLC8,068$779.4K0.05%+504+6.7%Added
Ossiam8,071$779.7K0.01%−1,698−17.4%Reduced
SRS Capital Advisors, Inc.8,159$788.2K0.08%00.0%Unchanged
BluePath Capital Management, LLC8,160$788.3K0.61%−701−7.9%Reduced
TownSquare Capital, LLC8,283$800.1K0.01%+610+7.9%Added
Twin Tree Management, LP8,304$802.2K0.02%+8,304New
Oarsman Capital, Inc.8,353$806.9K0.19%+148+1.8%Added
Baron Wealth Management LLC8,444$815.7K0.43%−9−0.1%Reduced
Capital Management Associates8,500$821.1K0.98%+3,000+54.5%Added
Simplicity Wealth,LLC8,527$823.7K0.02%+8,527New
Bleakley Financial Group, LLC8,579$828.7K0.02%+608+7.6%Added
Mercer Global Advisors Inc8,692$840.0K0.00%+827+10.5%Added
Hills Bank & Trust Co8,728$843.1K0.07%+30+0.3%Added
Alberta Investment Management Corp8,900$859.7K0.01%−6,675−42.9%Reduced
Accretive Wealth Partners, LLC9,425$859.8K0.38%+27+0.3%Added
Kingswood Wealth Advisors, LLC8,948$864.4K0.10%+24+0.3%Added
Connable Office Inc9,000$869.4K0.10%00.0%Unchanged
Patten & Patten Inc9,056$874.8K0.06%+1,330+17.2%Added
Wedbush Securities Inc9,412$909.0K0.03%−973−9.4%Reduced
Veriti Management LLC9,825$949.1K0.07%+2,457+33.3%Added
Panagora Asset Management Inc9,883$954.7K0.00%00.0%Unchanged
Center Lake Capital Management, LLC10,000$966.0K1.58%+10,000New
Rockefeller Capital Management L.P.10,131$978.7K0.00%−1,440−12.4%Reduced
CWM, LLC10,177$983.0K0.00%+5,208+104.8%Added
North Star Asset Management Inc10,189$984.3K0.05%+10,189New
Teacher Retirement System of Texas10,382$1.00M0.01%−8,400−44.7%Reduced
Kestra Advisory Services, LLC10,454$1.01M0.01%+113+1.1%Added
Davis Capital Management10,686$1.01M0.90%+49+0.5%Added
Lombard Odier Asset Management (Switzerland) SA10,456$1.01M0.07%+10,456New
Tokio Marine Asset Management Co Ltd10,520$1.02M0.05%+830+8.6%Added
La Banque Postale Asset Management SA10,575$1.02M0.04%+5,149+94.9%Added
USA Financial Portformulas Corp10,788$1.04M0.17%+10,663+8,530.4%Added
Maven Securities LTD10,857$1.05M0.06%+10,857New
Atria Wealth Solutions, Inc.10,991$1.06M0.01%−659−5.7%Reduced
Squarepoint Ops LLC11,075$1.07M0.00%−16,016−59.1%Reduced
Hohimer Wealth Management, LLC11,111$1.07M0.25%+11,111New
Cobblestone Capital Advisors LLC11,299$1.09M0.07%−6,578−36.8%Reduced
Regatta Capital Group, LLC11,390$1.10M0.25%+284+2.6%Added
Everence Capital Management Inc11,480$1.11M0.07%+2,710+30.9%Added
Bellwether Advisors, LLC11,494$1.11M0.24%+369+3.3%Added
Harvest Fund Management Co., Ltd12,026$1.16M0.10%+8,437+235.1%Added
Fort Washington Investment Advisors Inc12,070$1.17M0.01%00.0%Unchanged
IVC Wealth Advisors LLC12,196$1.18M0.68%−58−0.5%Reduced
United Services Automobile Association12,302$1.19M0.03%00.0%Unchanged
Banco Bilbao Vizcaya Argentaria, S.A.12,395$1.20M0.01%+316+2.6%Added
Monumental Financial Group Inc.12,547$1.21M0.64%−343−2.7%Reduced
Parallel Advisors, LLC12,628$1.22M0.03%−2,330−15.6%Reduced
Groupama Asset Managment174$1.23M0.02%00.0%Unchanged
Redwood Investments, LLC14,402$1.23M0.36%−1,582−9.9%Reduced
Emerald Advisers, LLC12,767$1.23M0.05%−219−1.7%Reduced
Legacy Advisors, LLC12,786$1.24M0.16%+1,286+11.2%Added
Stansberry Asset Management, LLC12,802$1.24M0.17%−22,712−64.0%Reduced
Roundview Capital LLC12,923$1.25M0.10%+1,072+9.0%Added
Northwestern Mutual Investment Management Company, LLC12,958$1.25M0.03%+32+0.2%Added
D. E. Shaw & Co., Inc.13,027$1.26M0.00%−58,876−81.9%Reduced
FIL Ltd13,089$1.26M0.00%+890+7.3%Added
Toroso Investments, LLC13,095$1.26M0.02%+998+8.2%Added
Gilbert & Cook, Inc.13,101$1.27M0.17%−1,470−10.1%Reduced
SlateStone Wealth, LLC13,208$1.28M0.13%+1,034+8.5%Added
Kentucky Retirement Systems Insurance Trust Fund13,476$1.30M0.09%−1,072−7.4%Reduced
Flossbach Von Storch AG13,484$1.30M0.01%+13,484New
Marshall Wace, LLP13,612$1.31M0.00%−144,507−91.4%Reduced
Chicago Trust Co NA13,810$1.33M0.28%+465+3.5%Added
Krilogy Financial LLC13,813$1.33M0.10%+858+6.6%Added
Bokf, NA14,170$1.34M0.02%+81+0.6%Added
RMR Wealth Builders13,888$1.34M0.16%00.0%Unchanged
LMCG Investments, LLC13,916$1.34M0.08%−8,839−38.8%Reduced
Chicago Partners Investment Group LLC16,071$1.36M0.06%+2,070+14.8%Added
EagleClaw Capital Managment, LLC14,100$1.36M0.25%−600−4.1%Reduced
Raymond James Financial Services Advisors, Inc.14,378$1.39M0.00%+738+5.4%Added
Verition Fund Management LLC14,492$1.40M0.01%+339+2.4%Added
APG Asset Management N.V.16,029$1.43M0.00%+1,000+6.7%Added
Benjamin F. Edwards & Company, Inc.14,899$1.44M0.03%+2,710+22.2%Added
Rakuten Investment Management, Inc.14,897$1.44M0.01%+13,887+1,375.0%Added
Wealth Enhancement Advisory Services, LLC15,024$1.45M0.00%+3,008+25.0%Added
Clark Capital Management Group, Inc.15,120$1.46M0.01%−5,454−26.5%Reduced
Quest Investment Management LLC15,203$1.47M0.16%−4,855−24.2%Reduced
Alps Advisors Inc15,212$1.47M0.01%−2,393−13.6%Reduced
O'Shaughnessy Asset Management, LLC15,301$1.48M0.02%+3,892+34.1%Added
WoodTrust Financial Corp15,400$1.49M0.24%+2,000+14.9%Added
Quantinno Capital Management LP15,462$1.49M0.03%+1,084+7.5%Added
Candriam Luxembourg S.C.A.15,601$1.51M0.01%+831+5.6%Added
Conestoga Capital Advisors, LLC15,655$1.51M0.02%+45+0.3%Added
UniSuper Management Pty Ltd16,040$1.55M0.01%+12,234+321.4%Added