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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 2023

Institutional positions in Costar Group, Inc. as of Mar 31, 2023. 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
692
−4 vs. Q4 2022
Shares held
388.8M
−4.89M (−1.2%) vs. Q4 2022
Total value
$26.7B
−$3.59B (−11.8%) vs. Q4 2022
New holders
81
261 more added
Sold out
85
266 more reduced

8 institutions that held it in Q4 2022 haven't filed for Q1 2023 yet. Not filing isn't selling, so they aren't counted as sold out or in the changes above.

Compare with Q4 2022: 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 2023: 692 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 2023: $26.7B
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 2023

Shares, value and share of portfolio for each institution holding Costar Group, Inc.; share changes are against Q4 2022.

Institutions holding CSGP in Q1 2023
InstitutionSharesValue% of portfolioChange in sharesAction
Highland Capital Management, LLC29,309$2.02M0.15%−714−2.4%Reduced
EFG Asset Management (Americas) Corp.29,132$2.01M0.48%−1,792−5.8%Reduced
Vestmark Advisory Solutions, Inc.28,875$1.99M0.09%+965+3.5%Added
Stansberry Asset Management, LLC27,504$1.89M0.37%+13,695+99.2%Added
Aurora Investment Managers, LLC.26,931$1.85M1.61%−453−1.7%Reduced
Nordea Investment Management AB27,157$1.85M0.00%+2,766+11.3%Added
Dai-Ichi Life Insurance Company, Ltd26,811$1.85M0.04%00.0%Unchanged
M&T Bank Corp26,237$1.81M0.01%−86−0.3%Reduced
Thrivent Financial for Lutherans26,229$1.81M0.00%+41+0.2%Added
Cinctive Capital Management LP26,022$1.79M0.07%−5,798−18.2%Reduced
Carlson Capital L P25,900$1.78M0.17%+25,900New
Quest Investment Management LLC25,603$1.76M0.24%−17,923−41.2%Reduced
Versor Investments LP25,600$1.76M0.23%+25,600New
LMCG Investments, LLC25,559$1.76M0.12%−528−2.0%Reduced
Sumitomo Life Insurance Co25,499$1.76M0.15%−155−0.6%Reduced
Occudo Quantitative Strategies LP25,310$1.74M0.16%+25,310New
American Assets Capital Advisers, LLC25,250$1.74M0.41%+2,050+8.8%Added
Wealth Enhancement Advisory Services, LLC25,216$1.74M0.02%+25,216New
Commonwealth Equity Services, LLC24,993$1.72M0.00%+2,071+9.0%Added
SG Americas Securities, LLC24,932$1.72M0.02%−6,621−21.0%Reduced
AXA S.A.24,638$1.70M0.01%−168,213−87.2%Reduced
Industrial Alliance Investment Management Inc.24,465$1.68M0.05%+910+3.9%Added
Malaga Cove Capital, LLC24,458$1.68M0.83%+2,809+13.0%Added
Norinchukin Bank, The24,253$1.67M0.03%+807+3.4%Added
Captrust Financial Advisors23,833$1.64M0.01%+3,289+16.0%Added
Abn Amro Investment Solutions23,800$1.64M0.03%+23,800New
Winton Group Ltd23,732$1.63M0.10%+10,208+75.5%Added
Vetamer Capital Management, L.P.23,167$1.60M2.20%−3,569−13.3%Reduced
Bank of Nova Scotia22,924$1.58M0.00%−61,679−72.9%Reduced
Caisse de Depot Et Placement du Quebec22,867$1.57M0.00%−8,100−26.2%Reduced
Twin Tree Management, LP22,287$1.53M0.04%+100.0%Added
Brinker Capital Investments, LLC21,897$1.51M0.02%+1,775+8.8%Added
Orion Portfolio Solutions, LLC21,897$1.51M0.02%+21,897New
Ergoteles LLC21,883$1.51M0.06%+21,883New
Stephens Inc21,766$1.50M0.03%+307+1.4%Added
SYSTM Wealth Solutions LLC21,604$1.49M0.23%−22,625−51.2%Reduced
Krilogy Financial LLC21,545$1.48M0.12%+2,844+15.2%Added
Profund Advisors LLC21,440$1.48M0.09%−3,843−15.2%Reduced
Dynamic Technology Lab Private Ltd21,368$1.47M0.14%+21,368New
Keybank National Association21,210$1.46M0.01%+7,662+56.6%Added
Crossmark Global Holdings, Inc.20,775$1.43M0.03%+71+0.3%Added
DoubleLine ETF Adviser LP20,487$1.41M0.60%+2,497+13.9%Added
Chartwell Investment Partners, LLC20,140$1.39M0.05%+38+0.2%Added
Wolverine Trading, LLC20,324$1.39M0.04%+17,142+538.7%Added
ING Groep NV19,873$1.37M0.01%−35,021−63.8%Reduced
Candriam Luxembourg S.C.A.21,506$1.36M0.01%+2,687+14.3%Added
Redmond Asset Management, LLC19,632$1.35M0.47%−208−1.0%Reduced
D.A. Davidson & Co.19,584$1.35M0.02%+1,307+7.2%Added
New Mexico Educational Retirement Board18,800$1.29M0.07%−600−3.1%Reduced
Institute for Wealth Management, LLC.18,601$1.28M0.25%−453−2.4%Reduced
Markel Group Inc.SuperinvestorMarkel Group18,600$1.28M0.02%00.0%Unchanged
Baker Tilly Wealth Management, LLC18,484$1.27M0.14%−1,163−5.9%Reduced
Voya Financial Advisors, Inc.18,607$1.27M0.16%+571+3.2%Added
Redwood Investments, LLC18,387$1.27M0.16%+181+1.0%Added
Metropolitan Life Insurance Co18,189$1.25M0.06%−4,377−19.4%Reduced
Waratah Capital Advisors Ltd.16,621$1.14M0.06%+16,621New
Chicago Partners Investment Group LLC15,657$1.10M0.06%+3,220+25.9%Added
Twin Capital Management Inc15,820$1.09M0.15%−23,582−59.8%Reduced
Conestoga Capital Advisors, LLC15,756$1.08M0.02%−370−2.3%Reduced
EagleClaw Capital Managment, LLC15,450$1.06M0.25%−1,460−8.6%Reduced
Metis Global Partners, LLC15,408$1.06M0.07%+4,224+37.8%Added
B. Metzler seel. Sohn & Co. AG15,082$1.04M0.02%+1,038+7.4%Added
Raymond James Financial Services Advisors, Inc.14,958$1.03M0.00%+1,276+9.3%Added
Prudential PLC14,930$1.03M0.01%−4,149−21.7%Reduced
JustInvest LLC14,883$1.02M0.04%−10,626−41.7%Reduced
Two Sigma Investments, LP14,560$1.00M0.00%+14,560New
Harvest Volatility Management LLC14,620$996.4K0.20%−2,556−14.9%Reduced
Kentucky Retirement Systems Insurance Trust Fund14,471$996.0K0.08%+281+2.0%Added
Lockheed Martin Investment Management Co14,371$989.4K0.06%00.0%Unchanged
Cornercap Investment Counsel Inc14,339$987.2K0.17%+14,339New
Greenline Partners, LLC14,238$980.3K0.19%+936+7.0%Added
HRT Financial LP14,069$968.0K0.01%+14,069New
Icon Wealth Partners, LLC13,989$963.1K0.10%+13,989New
Creative Planning13,959$961.1K0.00%−1,085−7.2%Reduced
RMR Wealth Builders13,888$956.2K0.18%00.0%Unchanged
Ameritas Investment Partners, Inc.13,586$935.4K0.04%+69+0.5%Added
Brown Brothers Harriman & Co13,480$928.1K0.01%00.0%Unchanged
Quantinno Capital Management LP13,418$924.0K0.06%−818−5.7%Reduced
Fox Run Management, L.L.C.13,297$915.5K0.30%+8,985+208.4%Added
Chicago Trust Co NA13,150$905.4K0.23%00.0%Unchanged
Qsemble Capital Management, LP13,000$895.0K0.60%+13,000New
Northwestern Mutual Investment Management Company, LLC12,783$880.1K0.02%+36+0.3%Added
PEAK6 Investments LLC12,771$879.3K0.06%+7,801+157.0%Added
Kestra Advisory Services, LLC12,758$878.4K0.01%−16,809−56.9%Reduced
IVC Wealth Advisors LLC12,716$875.5K0.62%−354−2.7%Reduced
Vinva Investment Management Ltd12,766$870.0K0.07%+12,766New
Regatta Capital Group, LLC11,222$867.2K0.31%00.0%Unchanged
TownSquare Capital, LLC12,530$862.7K0.02%−1,418−10.2%Reduced
WoodTrust Financial Corp12,500$860.6K0.17%+500+4.2%Added
Citadel Advisors LLC12,348$850.2K0.00%+12,279+17,795.7%Added
Skylands Capital, LLC12,100$833.1K0.12%00.0%Unchanged
Fort Washington Investment Advisors Inc12,070$831.0K0.01%00.0%Unchanged
Intech Investment Management LLC11,996$825.9K0.01%−49,673−80.5%Reduced
NewEdge Wealth, LLC11,426$786.7K0.03%+999+9.6%Added
Gould Capital, LLC11,418$786.1K0.61%−2,715−19.2%Reduced
Assenagon Asset Management S.A.11,301$778.1K0.00%−31,225−73.4%Reduced
Virtus ETF Advisers LLC11,270$775.9K0.43%+513+4.8%Added
Wedbush Securities Inc11,253$775.0K0.04%−367−3.2%Reduced
Banco Bilbao Vizcaya Argentaria, S.A.11,173$769.3K0.01%+2,251+25.2%Added
ArrowMark Colorado Holdings LLC11,144$767.3K0.01%+8,463+315.7%Added