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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
Gateway Investment Advisers LLC30,907$2.99M0.03%−70−0.2%Reduced
AXA S.A.30,669$2.96M0.01%+4,264+16.1%Added
JustInvest LLC30,549$2.95M0.06%+5,935+24.1%Added
Millennium Management LLC30,304$2.93M0.00%−50,257−62.4%Reduced
Employees Retirement System of Texas30,072$2.90M0.03%+15,438+105.5%Added
united american securities inc. (d/b/a uas asset management)30,035$2.90M0.78%−35,195−54.0%Reduced
Banque Pictet & Cie SA29,999$2.90M0.03%00.0%Unchanged
Exchange Traded Concepts, LLC29,383$2.84M0.07%+9,787+49.9%Added
Stephens Inc29,264$2.83M0.04%+10,421+55.3%Added
Scotia Capital Inc.29,013$2.80M0.02%+29,013New
Highland Capital Management, LLC28,545$2.76M0.16%+68+0.2%Added
Nordea Investment Management AB28,184$2.75M0.00%+1,424+5.3%Added
Advisor Group Holdings, Inc.28,147$2.72M0.01%−100,834−78.2%Reduced
Allianz Asset Management GmbH28,009$2.71M0.00%−12,052−30.1%Reduced
Maryland State Retirement & Pension System31,456$2.70M0.05%00.0%Unchanged
Commonwealth Equity Services, LLC27,654$2.67M0.00%+1,416+5.4%Added
Creative Planning27,478$2.65M0.00%+5,052+22.5%Added
Principal Securities, Inc.27,428$2.65M0.08%+1,225+4.7%Added
Hartford Investment Management Co26,396$2.55M0.09%−1,150−4.2%Reduced
Man Group plc26,143$2.53M0.01%−13,212−33.6%Reduced
Malaga Cove Capital, LLC25,675$2.48M1.01%−393−1.5%Reduced
Allianz SE25,512$2.46M0.08%+25,512New
D.A. Davidson & Co.25,076$2.42M0.02%+4,312+20.8%Added
M&T Bank Corp24,597$2.38M0.01%−63−0.3%Reduced
Securian Asset Management, Inc24,051$2.32M0.07%−1,762−6.8%Reduced
Tower Research Capital LLC (TRC)23,603$2.28M0.05%−73,385−75.7%Reduced
Brinker Capital Investments, LLC23,395$2.26M0.02%−3,544−13.2%Reduced
Orion Portfolio Solutions, LLC23,395$2.26M0.02%−3,544−13.2%Reduced
Sumitomo Life Insurance Co23,184$2.24M0.06%−687−2.9%Reduced
AXS Investments LLC23,139$2.24M0.54%−424−1.8%Reduced
Boomfish Wealth Group, LLC22,992$2.22M1.49%−284−1.2%Reduced
B. Metzler seel. Sohn & Co. AG22,850$2.21M0.02%−617−2.6%Reduced
TD Private Client Wealth LLC22,779$2.20M0.07%−50.0%Reduced
Quantitative Investment Management, LLC22,766$2.20M0.13%+22,766New
NEOS Investment Management LLC22,753$2.20M0.14%+3,829+20.2%Added
Qube Research & Technologies Ltd22,523$2.18M0.00%+22,523New
Crossmark Global Holdings, Inc.22,386$2.16M0.04%−142−0.6%Reduced
Credit Agricole S A25,346$2.13M0.04%+13,792+119.4%Added
First Bank & Trust22,024$2.13M0.44%+1,186+5.7%Added
Aurora Investment Managers, LLC.21,827$2.11M1.55%−5,185−19.2%Reduced
Bell Bank21,709$2.10M0.18%−3,279−13.1%Reduced
Keybank National Association21,208$2.05M0.01%−333−1.5%Reduced
Cresset Asset Management, LLC21,154$2.04M0.01%+12+0.1%Added
Kampmann Melissa S.20,835$2.01M1.45%+5,075+32.2%Added
New Mexico Educational Retirement Board20,600$1.99M0.07%−700−3.3%Reduced
Aviva PLC20,492$1.98M0.01%−18,672−47.7%Reduced
Ieq Capital, LLC20,035$1.94M0.03%+12,612+169.9%Added
Voya Financial Advisors, Inc.19,843$1.91M0.22%−931−4.5%Reduced
Atlantic Union Bankshares Corp19,423$1.88M0.16%+1,817+10.3%Added
Institute for Wealth Management, LLC.19,219$1.86M0.24%−182−0.9%Reduced
Aperture Investors, LLC18,946$1.83M0.23%−5,576−22.7%Reduced
Redmond Asset Management, LLC18,670$1.80M0.57%+169+0.9%Added
Markel Group Inc.SuperinvestorMarkel Group18,600$1.80M0.02%00.0%Unchanged
Cerity Partners LLC18,538$1.79M0.00%+15,212+457.4%Added
Dai-Ichi Life Insurance Company, Ltd18,425$1.78M0.04%00.0%Unchanged
Los Angeles Capital Management LLC17,797$1.72M0.01%−21,021−54.2%Reduced
Metis Global Partners, LLC17,649$1.70M0.06%−34−0.2%Reduced
Sapient Capital LLC17,617$1.70M0.04%−609−3.3%Reduced
Norinchukin Bank, The17,375$1.68M0.05%−357−2.0%Reduced
Ostrum Asset Management17,238$1.67M0.13%+1,240+7.8%Added
Harbor Advisors LLC17,060$1.65M0.30%00.0%Unchanged
First National Bank of Mount Dora, Trust Investment Services16,832$1.63M0.40%+16,832New
Procyon Private Wealth Partners, LLC16,661$1.61M0.12%−1,445−8.0%Reduced
Metropolitan Life Insurance Co16,469$1.59M0.07%−152−0.9%Reduced
Capstone Investment Advisors, LLC16,395$1.58M0.03%+13,910+559.8%Added
Ameritas Investment Partners, Inc.16,382$1.58M0.05%00.0%Unchanged
QRG Capital Management, Inc.16,222$1.57M0.02%+1,225+8.2%Added
UniSuper Management Pty Ltd16,040$1.55M0.01%+12,234+321.4%Added
Conestoga Capital Advisors, LLC15,655$1.51M0.02%+45+0.3%Added
Candriam Luxembourg S.C.A.15,601$1.51M0.01%+831+5.6%Added
Quantinno Capital Management LP15,462$1.49M0.03%+1,084+7.5%Added
WoodTrust Financial Corp15,400$1.49M0.24%+2,000+14.9%Added
O'Shaughnessy Asset Management, LLC15,301$1.48M0.02%+3,892+34.1%Added
Alps Advisors Inc15,212$1.47M0.01%−2,393−13.6%Reduced
Quest Investment Management LLC15,203$1.47M0.16%−4,855−24.2%Reduced
Clark Capital Management Group, Inc.15,120$1.46M0.01%−5,454−26.5%Reduced
Wealth Enhancement Advisory Services, LLC15,024$1.45M0.00%+3,008+25.0%Added
Rakuten Investment Management, Inc.14,897$1.44M0.01%+13,887+1,375.0%Added
Benjamin F. Edwards & Company, Inc.14,899$1.44M0.03%+2,710+22.2%Added
APG Asset Management N.V.16,029$1.43M0.00%+1,000+6.7%Added
Verition Fund Management LLC14,492$1.40M0.01%+339+2.4%Added
Raymond James Financial Services Advisors, Inc.14,378$1.39M0.00%+738+5.4%Added
EagleClaw Capital Managment, LLC14,100$1.36M0.25%−600−4.1%Reduced
Chicago Partners Investment Group LLC16,071$1.36M0.06%+2,070+14.8%Added
LMCG Investments, LLC13,916$1.34M0.08%−8,839−38.8%Reduced
RMR Wealth Builders13,888$1.34M0.16%00.0%Unchanged
Bokf, NA14,170$1.34M0.02%+81+0.6%Added
Krilogy Financial LLC13,813$1.33M0.10%+858+6.6%Added
Chicago Trust Co NA13,810$1.33M0.28%+465+3.5%Added
Marshall Wace, LLP13,612$1.31M0.00%−144,507−91.4%Reduced
Flossbach Von Storch AG13,484$1.30M0.01%+13,484New
Kentucky Retirement Systems Insurance Trust Fund13,476$1.30M0.09%−1,072−7.4%Reduced
SlateStone Wealth, LLC13,208$1.28M0.13%+1,034+8.5%Added
Gilbert & Cook, Inc.13,101$1.27M0.17%−1,470−10.1%Reduced
Toroso Investments, LLC13,095$1.26M0.02%+998+8.2%Added
FIL Ltd13,089$1.26M0.00%+890+7.3%Added
D. E. Shaw & Co., Inc.13,027$1.26M0.00%−58,876−81.9%Reduced
Northwestern Mutual Investment Management Company, LLC12,958$1.25M0.03%+32+0.2%Added
Roundview Capital LLC12,923$1.25M0.10%+1,072+9.0%Added
Stansberry Asset Management, LLC12,802$1.24M0.17%−22,712−64.0%Reduced