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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 2023

Institutional positions in Costar Group, Inc. as of Sep 30, 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
690
−19 vs. Q2 2023
Shares held
392.0M
−6.08M (−1.5%) vs. Q2 2023
Total value
$30.1B
−$5.25B (−14.8%) vs. Q2 2023
New holders
65
276 more added
Sold out
84
251 more reduced

5 institutions that held it in Q2 2023 haven't filed for Q3 2023 yet. Not filing isn't selling, so they aren't counted as sold out or in the changes above.

Compare with Q2 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 holdersQ3 2023: 690 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 2023: $30.1B
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 2023

Shares, value and share of portfolio for each institution holding Costar Group, Inc.; share changes are against Q2 2023.

Institutions holding CSGP in Q3 2023
InstitutionSharesValue% of portfolioChange in sharesAction
HST Ventures, LLC0$00.00%−39,966−100.0%Sold out
united american securities inc. (d/b/a uas asset management)0$00.00%−35,000−100.0%Sold out
Cinctive Capital Management LP0$00.00%−26,701−100.0%Sold out
Copperwynd Financial, LLC0$00.00%−23,519−100.0%Sold out
Engineers Gate Manager LP0$00.00%−20,021−100.0%Sold out
Verition Fund Management LLC0$00.00%−19,698−100.0%Sold out
Graham Capital Management, L.P.0$00.00%−18,002−100.0%Sold out
Landscape Capital Management, L.L.C.0$00.00%−17,712−100.0%Sold out
Headlands Technologies LLC0$00.00%−15,549−100.0%Sold out
XTX Topco Ltd0$00.00%−15,289−100.0%Sold out
Vetamer Capital Management, L.P.0$00.00%−14,475−100.0%Sold out
Rockefeller Capital Management L.P.0$00.00%−13,697−100.0%Sold out
Great Lakes Advisors, LLC0$00.00%−12,854−100.0%Sold out
Harvest Volatility Management LLC0$00.00%−12,589−100.0%Sold out
Nomura Holdings Inc0$00.00%−12,040−100.0%Sold out
Virtus ETF Advisers LLC0$00.00%−11,210−100.0%Sold out
Algert Global LLC0$00.00%−10,342−100.0%Sold out
Vinva Investment Management Ltd0$00.00%−9,226−100.0%Sold out
Aigen Investment Management, LP0$00.00%−8,288−100.0%Sold out
Fox Run Management, L.L.C.0$00.00%−7,668−100.0%Sold out
Cannon Global Investment Management, LLC0$00.00%−7,500−100.0%Sold out
Occudo Quantitative Strategies LP0$00.00%−7,388−100.0%Sold out
Two Sigma Securities, LLC0$00.00%−7,215−100.0%Sold out
Gsa Capital Partners LLP0$00.00%−6,999−100.0%Sold out
JSF Financial, LLC0$00.00%−6,588−100.0%Sold out
Rehmann Capital Advisory Group0$00.00%−5,751−100.0%Sold out
Agf Management Ltd0$00.00%−5,543−100.0%Sold out
Bridgefront Capital, LLC0$00.00%−5,461−100.0%Sold out
Independent Advisor Alliance0$00.00%−5,033−100.0%Sold out
Bayesian Capital Management, LP0$00.00%−4,448−100.0%Sold out
Capital CS Group, LLC0$00.00%−3,977−100.0%Sold out
Symmetry Partners, LLC0$00.00%−3,910−100.0%Sold out
Gitterman Wealth Management, LLC0$00.00%−3,778−100.0%Sold out
Kalos Management, Inc.0$00.00%−3,660−100.0%Sold out
Acima Private Wealth, LLC0$00.00%−3,612−100.0%Sold out
CM Wealth Advisors LLC0$00.00%−3,793−100.0%Sold out
Citizens Financial Group Inc0$00.00%−3,207−100.0%Sold out
Kolinsky Wealth Management, LLC0$00.00%−3,073−100.0%Sold out
Waterloo Capital, L.P.0$00.00%−3,093−100.0%Sold out
WMS Partners, LLC0$00.00%−3,042−100.0%Sold out
Comerica Securities,inc.0$00.00%−3,037−100.0%Sold out
Veritable, L.P.0$00.00%−3,011−100.0%Sold out
Thompson Siegel & Walmsley LLC0$00.00%−3,000−100.0%Sold out
FFT Wealth Management LLC0$00.00%−2,998−100.0%Sold out
Nilsine Partners, LLC0$00.00%−2,820−100.0%Sold out
Bahl & Gaynor Inc0$00.00%−2,704−100.0%Sold out
Crescent Grove Advisors, LLC0$00.00%−2,555−100.0%Sold out
CX Institutional0$00.00%−2,480−100.0%Sold out
Seaport Global Advisors, LLC0$00.00%−2,454−100.0%Sold out
Empirical Asset Management, LLC0$00.00%−2,420−100.0%Sold out
Legacy Trust0$00.00%−2,395−100.0%Sold out
YHB Investment Advisors, Inc.0$00.00%−2,379−100.0%Sold out
Clarius Group, LLC0$00.00%−2,278−100.0%Sold out
Ridgewood Investments LLC0$00.00%−1,930−100.0%Sold out
Achmea Investment Management B.V.0$00.00%−1,281−100.0%Sold out
ICA Group Wealth Management, LLC0$00.00%−1,079−100.0%Sold out
C M Bidwell & Associates Ltd0$00.00%−1,048−100.0%Sold out
Pinebridge Investments, L.P.0$00.00%−964−100.0%Sold out
O'Dell Group, LLC0$00.00%−610−100.0%Sold out
Arlington Partners LLC0$00.00%−582−100.0%Sold out
CVA Family Office, LLC0$00.00%−420−100.0%Sold out
West Tower Group, LLC0$00.00%−325−100.0%Sold out
PCA Investment Advisory Services Inc.0$00.00%−224−100.0%Sold out
Oakworth Capital, Inc.0$00.00%−102−100.0%Sold out
Providence Capital Advisors, LLC0$00.00%−100−100.0%Sold out
GHP Investment Advisors, Inc.0$00.00%−104−100.0%Sold out
Pinnacle Financial Partners Inc0$00.00%−84−100.0%Sold out
Halpern Financial, Inc.0$00.00%−70−100.0%Sold out
Impact Partnership Wealth, LLC0$00.00%−27−100.0%Sold out
Disciplined Investments, LLC0$00.00%−23−100.0%Sold out
NFJ Investment Group, LLC0$00.00%−19−100.0%Sold out
Private Ocean, LLC0$00.00%−10−100.0%Sold out
25 LLC0$00.00%−7−100.0%Sold out
Sofos Investments, Inc.0$00.00%−89−100.0%Sold out
Pictet Asset Management SA––––Not filed
Efg Capital International Corp.––––Not filed
Endurance Wealth Management, Inc.––––Not filed
EA Series Trust––––Not filed
BerganKDV Wealth Management, LLC––––Not filed