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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, Q3 2021

Institutional positions in Costar Group, Inc. as of Sep 30, 2021. 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
594
−8 vs. Q2 2021
Shares held
375.4M
+407.8K (+0.1%) vs. Q2 2021
Total value
$32.3B
+$1.24B (+4.0%) vs. Q2 2021
New holders
66
239 more added
Sold out
74
199 more reduced

5 institutions that held it in Q2 2021 haven't filed for Q3 2021 yet. Not filing isn't selling, so they aren't counted as sold out or in the changes above.

Compare with Q2 2021: 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 holdersQ3 2021: 594 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 heldQ3 2021: $32.3B
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, Q3 2021

Shares, value and share of portfolio for each institution holding Costar Group, Inc.; share changes are against Q2 2021.

Institutions holding CSGP in Q3 2021
InstitutionSharesValue% of portfolioChange in sharesAction
Thrivent Financial for Lutherans6,658$573.0K0.00%−264,962−97.5%Reduced
Hantz Financial Services, Inc.6,691$576.0K0.02%+3,044+83.5%Added
IndexIQ Advisors LLC6,786$584.0K0.02%+346+5.4%Added
Natixis6,801$585.0K0.00%−7,619−52.8%Reduced
Comerica Bank5,946$590.0K0.00%−9,224−60.8%Reduced
Hengehold Capital Management LLC6,936$597.0K0.08%+26+0.4%Added
American International Group, Inc.6,950$598.0K0.00%−580−7.7%Reduced
Centiva Capital, LP6,966$599.0K0.05%+4,274+158.8%Added
Penserra Capital Management LLC7,110$610.0K0.01%+70+1.0%Added
First Manhattan Co7,500$645.0K0.00%00.0%Unchanged
Knowledge Leaders Capital, LLC7,560$651.0K0.53%+90+1.2%Added
Bokf, NA7,854$676.0K0.01%+7,854New
Sigma Planning Corp8,051$693.0K0.02%−1,279−13.7%Reduced
Baker Tilly Wealth Management, LLC8,295$714.0K0.09%+2,589+45.4%Added
Integrated Wealth Concepts LLC8,428$725.0K0.02%+481+6.1%Added
Hood River Capital Management LLC8,433$726.0K0.02%−107−1.3%Reduced
BBVA USA8,552$736.0K0.04%−1,998−18.9%Reduced
Hills Bank & Trust Co8,565$737.0K0.11%+285+3.4%Added
Bridgewater Associates, LP8,869$763.0K0.00%+8,869New
Chicago Trust Co NA8,890$765.0K0.17%+2,600+41.3%Added
NEXT Financial Group, Inc9,070$781.0K0.06%−620−6.4%Reduced
Twin Tree Management, LP9,076$781.0K0.02%+5,827+179.3%Added
Snowden Capital Advisors LLC9,205$792.2K0.04%+176+1.9%Added
Tower Research Capital LLC (TRC)9,349$804.0K0.02%−20,835−69.0%Reduced
Unigestion Holding SA9,450$807.0K0.03%00.0%Unchanged
Achmea Investment Management B.V.9,403$809.0K0.02%−10,957−53.8%Reduced
Creative Planning9,410$810.0K0.00%−110−1.2%Reduced
RMR Wealth Builders9,510$818.0K0.24%00.0%Unchanged
Gardner Lewis Asset Management L P9,650$830.0K0.13%00.0%Unchanged
Equitable Trust Co9,761$840.0K0.05%+911+10.3%Added
Tocqueville Asset Management L.P.10,000$861.0K0.01%−140−1.4%Reduced
Harbor Advisors LLC10,060$866.0K0.17%00.0%Unchanged
Manufacturers Life Insurance Company, The10,063$866.0K0.00%+21+0.2%Added
Exchange Traded Concepts, LLC10,129$872.0K0.02%+1,429+16.4%Added
Motley Fool Asset Management LLC10,190$877.0K0.06%−444−4.2%Reduced
Connable Office Inc10,310$887.0K0.13%00.0%Unchanged
Ellsworth Advisors, LLC10,312$887.0K0.40%+22+0.2%Added
Cohen & Steers, Inc.10,302$887.0K0.00%+712+7.4%Added
NewEdge Wealth, LLC10,306$887.0K0.05%+2,756+36.5%Added
WMS Partners, LLC10,416$896.0K0.13%+3,976+61.7%Added
Captrust Financial Advisors10,645$916.0K0.01%−145−1.3%Reduced
IBM Retirement Fund11,080$954.0K0.07%00.0%Unchanged
Optimal Asset Management, Inc.11,096$955.0K0.12%+27+0.2%Added
Buckhead Capital Management LLC11,245$968.0K0.22%+1,865+19.9%Added
BNP PARIBAS ASSET MANAGEMENT Holding S.A.11,447$985.0K0.00%−433−3.6%Reduced
Bridges Investment Management Inc11,440$985.0K0.03%00.0%Unchanged
Krilogy Financial LLC11,510$991.0K0.10%+274+2.4%Added
Maverick Capital LtdSuperinvestorMaverick Capital11,538$993.0K0.01%+4,696+68.6%Added
Brookfield Asset Management Inc.11,729$1.01M0.00%−11,431−49.4%Reduced
Wellington Shields Capital Management, LLC11,886$1.02M0.14%+7,136+150.2%Added
Fort, L.P.11,896$1.02M0.34%−5,304−30.8%Reduced
Oak Ridge Investments LLC12,223$1.05M0.09%−115−0.9%Reduced
Gilbert & Cook, Inc.12,234$1.05M0.19%+3,854+46.0%Added
Raymond James Financial Services Advisors, Inc.12,990$1.12M0.00%−1,432−9.9%Reduced
KLK Capital Management LLC13,480$1.16M1.06%+2,330+20.9%Added
Wedbush Securities Inc13,510$1.16M0.06%−160−1.2%Reduced
Brown Brothers Harriman & Co13,630$1.17M0.01%00.0%Unchanged
Chicago Partners Investment Group LLC14,709$1.20M0.08%+309+2.1%Added
Citizens Financial Group Inc14,049$1.21M0.04%+14,049New
Threadgill Financial, LLC14,137$1.22M1.01%+14,137New
Avestar Capital, LLC14,221$1.22M0.24%+46+0.3%Added
Pitcairn Co14,680$1.26M0.09%−200−1.3%Reduced
IVC Wealth Advisors LLC14,871$1.28M0.88%+541+3.8%Added
Boothbay Fund Management, LLC15,125$1.30M0.05%+3,159+26.4%Added
Insight Wealth Strategies, LLC15,434$1.33M0.19%+696+4.7%Added
Icon Wealth Partners, LLC15,891$1.37M0.15%+801+5.3%Added
CIBC Asset Management Inc15,988$1.38M0.01%+1,268+8.6%Added
Sumitomo Life Insurance Co16,008$1.38M0.04%−532−3.2%Reduced
Cresset Asset Management, LLC16,067$1.38M0.02%+1,387+9.4%Added
Trexquant Investment LP16,097$1.39M0.11%+16,097New
Pinebridge Investments, L.P.16,125$1.39M0.02%−1,715−9.6%Reduced
Central Trust Co16,268$1.40M0.05%+8,743+116.2%Added
EagleClaw Capital Managment, LLC16,510$1.42M0.37%−100−0.6%Reduced
Seeyond16,700$1.44M0.14%−170−1.0%Reduced
D.A. Davidson & Co.16,936$1.46M0.02%+3,290+24.1%Added
Conestoga Capital Advisors, LLC17,205$1.48M0.02%+960+5.9%Added
Skye Global Management LP17,300$1.49M0.03%−25,700−59.8%Reduced
Greenline Partners, LLC17,342$1.49M0.31%+72+0.4%Added
Leisure Capital Management17,597$1.51M0.81%+691+4.1%Added
Algert Global LLC17,888$1.54M0.20%+17,888New
E. Ohman J:or Asset Management AB18,000$1.55M0.05%00.0%Unchanged
Private Advisor Group, LLC18,066$1.55M0.01%+5,716+46.3%Added
Proequities, Inc.18,205$1.57M0.10%+615+3.5%Added
Holocene Advisors, LP18,215$1.57M0.01%−717,972−97.5%Reduced
Redmond Asset Management, LLC18,635$1.60M0.50%+85+0.5%Added
Mariner, LLC18,764$1.61M0.01%+707+3.9%Added
Caisse de Depot Et Placement du Quebec18,880$1.63M0.00%−9,600−33.7%Reduced
Commonwealth Equity Services, LLC18,924$1.63M0.00%+1,741+10.1%Added
Institute for Wealth Management, LLC.18,996$1.64M0.29%−77−0.4%Reduced
Daiwa Securities Group Inc.19,420$1.67M0.01%+400+2.1%Added
Emerald Advisers, LLC19,862$1.71M0.06%−618−3.0%Reduced
DuPont Capital Management Corp20,250$1.74M0.05%+330+1.7%Added
Keybank National Association20,261$1.74M0.01%+3,069+17.9%Added
Worldquant Millennium Advisors LLC20,317$1.75M0.04%−22,333−52.4%Reduced
Chartwell Investment Partners, LLC20,430$1.76M0.05%00.0%Unchanged
Nordea Investment Management AB20,560$1.76M0.00%00.0%Unchanged
Brinker Capital Investments, LLC21,137$1.77M0.03%−30.0%Reduced
Redwood Investments, LLC20,575$1.77M0.15%−775−3.6%Reduced
Candriam Luxembourg S.C.A.20,830$1.79M0.01%−1,880−8.3%Reduced
Malaga Cove Capital, LLC20,987$1.81M0.75%+2,747+15.1%Added