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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
Skylands Capital, LLC12,100$833.1K0.12%00.0%Unchanged
Citadel Advisors LLC12,348$850.2K0.00%+12,279+17,795.7%Added
WoodTrust Financial Corp12,500$860.6K0.17%+500+4.2%Added
TownSquare Capital, LLC12,530$862.7K0.02%−1,418−10.2%Reduced
Regatta Capital Group, LLC11,222$867.2K0.31%00.0%Unchanged
Vinva Investment Management Ltd12,766$870.0K0.07%+12,766New
IVC Wealth Advisors LLC12,716$875.5K0.62%−354−2.7%Reduced
Kestra Advisory Services, LLC12,758$878.4K0.01%−16,809−56.9%Reduced
PEAK6 Investments LLC12,771$879.3K0.06%+7,801+157.0%Added
Northwestern Mutual Investment Management Company, LLC12,783$880.1K0.02%+36+0.3%Added
Qsemble Capital Management, LP13,000$895.0K0.60%+13,000New
Chicago Trust Co NA13,150$905.4K0.23%00.0%Unchanged
Fox Run Management, L.L.C.13,297$915.5K0.30%+8,985+208.4%Added
Quantinno Capital Management LP13,418$924.0K0.06%−818−5.7%Reduced
Brown Brothers Harriman & Co13,480$928.1K0.01%00.0%Unchanged
Ameritas Investment Partners, Inc.13,586$935.4K0.04%+69+0.5%Added
RMR Wealth Builders13,888$956.2K0.18%00.0%Unchanged
Creative Planning13,959$961.1K0.00%−1,085−7.2%Reduced
Icon Wealth Partners, LLC13,989$963.1K0.10%+13,989New
HRT Financial LP14,069$968.0K0.01%+14,069New
Greenline Partners, LLC14,238$980.3K0.19%+936+7.0%Added
Cornercap Investment Counsel Inc14,339$987.2K0.17%+14,339New
Lockheed Martin Investment Management Co14,371$989.4K0.06%00.0%Unchanged
Kentucky Retirement Systems Insurance Trust Fund14,471$996.0K0.08%+281+2.0%Added
Harvest Volatility Management LLC14,620$996.4K0.20%−2,556−14.9%Reduced
Two Sigma Investments, LP14,560$1.00M0.00%+14,560New
JustInvest LLC14,883$1.02M0.04%−10,626−41.7%Reduced
Prudential PLC14,930$1.03M0.01%−4,149−21.7%Reduced
Raymond James Financial Services Advisors, Inc.14,958$1.03M0.00%+1,276+9.3%Added
B. Metzler seel. Sohn & Co. AG15,082$1.04M0.02%+1,038+7.4%Added
Metis Global Partners, LLC15,408$1.06M0.07%+4,224+37.8%Added
EagleClaw Capital Managment, LLC15,450$1.06M0.25%−1,460−8.6%Reduced
Conestoga Capital Advisors, LLC15,756$1.08M0.02%−370−2.3%Reduced
Twin Capital Management Inc15,820$1.09M0.15%−23,582−59.8%Reduced
Chicago Partners Investment Group LLC15,657$1.10M0.06%+3,220+25.9%Added
Waratah Capital Advisors Ltd.16,621$1.14M0.06%+16,621New
Metropolitan Life Insurance Co18,189$1.25M0.06%−4,377−19.4%Reduced
Redwood Investments, LLC18,387$1.27M0.16%+181+1.0%Added
Voya Financial Advisors, Inc.18,607$1.27M0.16%+571+3.2%Added
Baker Tilly Wealth Management, LLC18,484$1.27M0.14%−1,163−5.9%Reduced
Markel Group Inc.SuperinvestorMarkel Group18,600$1.28M0.02%00.0%Unchanged
Institute for Wealth Management, LLC.18,601$1.28M0.25%−453−2.4%Reduced
New Mexico Educational Retirement Board18,800$1.29M0.07%−600−3.1%Reduced
D.A. Davidson & Co.19,584$1.35M0.02%+1,307+7.2%Added
Redmond Asset Management, LLC19,632$1.35M0.47%−208−1.0%Reduced
Candriam Luxembourg S.C.A.21,506$1.36M0.01%+2,687+14.3%Added
ING Groep NV19,873$1.37M0.01%−35,021−63.8%Reduced
Wolverine Trading, LLC20,324$1.39M0.04%+17,142+538.7%Added
Chartwell Investment Partners, LLC20,140$1.39M0.05%+38+0.2%Added
DoubleLine ETF Adviser LP20,487$1.41M0.60%+2,497+13.9%Added
Crossmark Global Holdings, Inc.20,775$1.43M0.03%+71+0.3%Added
Keybank National Association21,210$1.46M0.01%+7,662+56.6%Added
Dynamic Technology Lab Private Ltd21,368$1.47M0.14%+21,368New
Profund Advisors LLC21,440$1.48M0.09%−3,843−15.2%Reduced
Krilogy Financial LLC21,545$1.48M0.12%+2,844+15.2%Added
SYSTM Wealth Solutions LLC21,604$1.49M0.23%−22,625−51.2%Reduced
Stephens Inc21,766$1.50M0.03%+307+1.4%Added
Ergoteles LLC21,883$1.51M0.06%+21,883New
Brinker Capital Investments, LLC21,897$1.51M0.02%+1,775+8.8%Added
Orion Portfolio Solutions, LLC21,897$1.51M0.02%+21,897New
Twin Tree Management, LP22,287$1.53M0.04%+100.0%Added
Caisse de Depot Et Placement du Quebec22,867$1.57M0.00%−8,100−26.2%Reduced
Bank of Nova Scotia22,924$1.58M0.00%−61,679−72.9%Reduced
Vetamer Capital Management, L.P.23,167$1.60M2.20%−3,569−13.3%Reduced
Winton Group Ltd23,732$1.63M0.10%+10,208+75.5%Added
Abn Amro Investment Solutions23,800$1.64M0.03%+23,800New
Captrust Financial Advisors23,833$1.64M0.01%+3,289+16.0%Added
Norinchukin Bank, The24,253$1.67M0.03%+807+3.4%Added
Malaga Cove Capital, LLC24,458$1.68M0.83%+2,809+13.0%Added
Industrial Alliance Investment Management Inc.24,465$1.68M0.05%+910+3.9%Added
AXA S.A.24,638$1.70M0.01%−168,213−87.2%Reduced
SG Americas Securities, LLC24,932$1.72M0.02%−6,621−21.0%Reduced
Commonwealth Equity Services, LLC24,993$1.72M0.00%+2,071+9.0%Added
Wealth Enhancement Advisory Services, LLC25,216$1.74M0.02%+25,216New
American Assets Capital Advisers, LLC25,250$1.74M0.41%+2,050+8.8%Added
Occudo Quantitative Strategies LP25,310$1.74M0.16%+25,310New
Sumitomo Life Insurance Co25,499$1.76M0.15%−155−0.6%Reduced
LMCG Investments, LLC25,559$1.76M0.12%−528−2.0%Reduced
Versor Investments LP25,600$1.76M0.23%+25,600New
Quest Investment Management LLC25,603$1.76M0.24%−17,923−41.2%Reduced
Carlson Capital L P25,900$1.78M0.17%+25,900New
Cinctive Capital Management LP26,022$1.79M0.07%−5,798−18.2%Reduced
Thrivent Financial for Lutherans26,229$1.81M0.00%+41+0.2%Added
M&T Bank Corp26,237$1.81M0.01%−86−0.3%Reduced
Dai-Ichi Life Insurance Company, Ltd26,811$1.85M0.04%00.0%Unchanged
Nordea Investment Management AB27,157$1.85M0.00%+2,766+11.3%Added
Aurora Investment Managers, LLC.26,931$1.85M1.61%−453−1.7%Reduced
Stansberry Asset Management, LLC27,504$1.89M0.37%+13,695+99.2%Added
Vestmark Advisory Solutions, Inc.28,875$1.99M0.09%+965+3.5%Added
EFG Asset Management (Americas) Corp.29,132$2.01M0.48%−1,792−5.8%Reduced
Highland Capital Management, LLC29,309$2.02M0.15%−714−2.4%Reduced
Moody National Bank Trust Division29,510$2.03M0.17%−6,450−17.9%Reduced
Bell Bank29,795$2.05M0.22%−1,776−5.6%Reduced
Banque Pictet & Cie SA30,000$2.07M0.02%−18,900−38.7%Reduced
GPM Growth Investors, Inc.30,171$2.08M1.20%−268−0.9%Reduced
Mariner, LLC30,481$2.10M0.01%−11,113−26.7%Reduced
National Bank of Canada31,045$2.14M0.01%+17,117+122.9%Added
Swiss Life Asset Management Ltd31,521$2.17M0.03%+31,521New
Campbell & CO Investment Adviser LLC31,528$2.17M0.40%+31,528New
Maryland State Retirement & Pension System31,715$2.18M0.05%00.0%Unchanged