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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, Q4 2021

Institutional positions in Costar Group, Inc. as of Dec 31, 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
633
+48 vs. Q3 2021
Shares held
375.1M
−165.5K (0.0%) vs. Q3 2021
Total value
$29.6B
−$2.64B (−8.2%) vs. Q3 2021
New holders
113
229 more added
Sold out
65
214 more reduced

9 institutions that held it in Q3 2021 haven't filed for Q4 2021 yet. Not filing isn't selling, so they aren't counted as sold out or in the changes above.

Compare with Q3 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 holdersQ4 2021: 633 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 heldQ4 2021: $29.6B
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, Q4 2021

Shares, value and share of portfolio for each institution holding Costar Group, Inc.; share changes are against Q3 2021.

Institutions holding CSGP in Q4 2021
InstitutionSharesValue% of portfolioChange in sharesAction
Nomura Asset Management Co Ltd78,633$6.21M0.03%+2,421+3.2%Added
US Bancorp78,354$6.19M0.01%−542−0.7%Reduced
Davenport & Co LLC77,882$6.16M0.04%+29,243+60.1%Added
Old National Bancorp77,052$6.09M0.22%−9,396−10.9%Reduced
Teacher Retirement System of Texas76,722$6.06M0.03%−1,000,390−92.9%Reduced
DnB Asset Management AS76,096$6.01M0.04%−201−0.3%Reduced
Andra AP-fonden74,500$5.89M0.12%−2,500−3.2%Reduced
Westfield Capital Management Co LP74,500$5.89M0.03%00.0%Unchanged
LPL Financial LLC74,390$5.88M0.00%+8,577+13.0%Added
Foster Victor Wealth Advisors, LLC78,432$5.87M0.80%+9,773+14.2%Added
Occudo Quantitative Strategies LP72,347$5.72M0.51%+72,347New
Vetamer Capital Management, L.P.71,666$5.66M2.87%+71,666New
Utah Retirement Systems71,080$5.62M0.07%+200+0.3%Added
Skandinaviska Enskilda Banken AB (publ)68,874$5.52M0.03%−315−0.5%Reduced
British Columbia Investment Management Corp69,473$5.49M0.03%−3,458−4.7%Reduced
State of Alaska, Department of Revenue68,005$5.37M0.05%−7,490−9.9%Reduced
Claar Advisors LLC66,550$5.26M1.51%+3,600+5.7%Added
Holocene Advisors, LP66,435$5.25M0.03%+48,220+264.7%Added
ProShare Advisors LLC65,285$5.16M0.01%+5,863+9.9%Added
Gulf International Bank (UK) Ltd64,262$5.08M0.07%−13,500−17.4%Reduced
Shaker Investments LLC62,990$4.98M2.15%+90+0.1%Added
MML Investors Services, LLC60,171$4.75M0.03%+3,533+6.2%Added
Commerce Bank59,462$4.70M0.03%+254+0.4%Added
Zurcher Kantonalbank (Zurich Cantonalbank)57,234$4.52M0.02%−10,964−16.1%Reduced
Janney Montgomery Scott LLC55,841$4.41M0.02%−1,215−2.1%Reduced
Banque Pictet & Cie SA55,200$4.36M0.03%00.0%Unchanged
Formula Growth Ltd55,000$4.35M0.77%00.0%Unchanged
Azzad Asset Management Inc54,832$4.33M0.58%−188−0.3%Reduced
Reliant Investment Management, LLC54,555$4.31M1.77%+3,365+6.6%Added
Public Employees Retirement Association of Colorado53,910$4.26M0.02%00.0%Unchanged
Quest Investment Management LLC53,834$4.25M0.36%+5,606+11.6%Added
B. Metzler seel. Sohn & Co. AG52,988$4.25M0.06%+52,988New
CWM Advisors, LLC53,581$4.24M0.49%+4,479+9.1%Added
Trexquant Investment LP53,544$4.23M0.26%+37,447+232.6%Added
Stephens Inc53,310$4.21M0.06%+17,072+47.1%Added
Nisa Investment Advisors, LLC57,250$4.02M0.03%+4,400+8.3%Added
IFM Investors Pty Ltd50,513$3.99M0.07%−467−0.9%Reduced
Alberta Investment Management Corp49,500$3.91M0.02%−76,600−60.7%Reduced
Cambridge Investment Research Advisors, Inc.48,610$3.84M0.02%+1,129+2.4%Added
Marks Group Wealth Management, Inc45,318$3.60M0.44%+2,269+5.3%Added
Noble Path Asset Management LP45,160$3.57M3.46%+45,160New
Tredje AP-fonden44,958$3.55M0.07%+4,958+12.4%Added
Federation des caisses Desjardins du Quebec44,594$3.52M0.03%+6,709+17.7%Added
Regions Financial Corp44,384$3.51M0.03%+120+0.3%Added
Wolverine Trading, LLC42,127$3.38M0.05%−19,653−31.8%Reduced
Clearbridge Investments, LLC42,381$3.35M0.00%+4,006+10.4%Added
Sciencast Management LP42,955$3.35M0.59%+42,955New
Taikang Asset Management (Hong Kong) Co Ltd41,010$3.24M0.65%00.0%Unchanged
Paloma Partners Management Co39,560$3.13M0.10%+39,560New
Fiduciary Group LLC39,526$3.12M0.35%+39,526New
Yarbrough Capital, LLC39,346$3.11M0.17%+39,346New
Handelsbanken Fonder AB39,098$3.09M0.02%−772−1.9%Reduced
HighTower Advisors, LLC38,830$3.08M0.01%+5,972+18.2%Added
Papp L Roy & Associates38,453$3.04M0.35%+123+0.3%Added
Bishop Rock Capital, L.P.37,544$2.97M0.89%+37,544New
Caisse de Depot Et Placement du Quebec37,380$2.95M0.01%+18,500+98.0%Added
Blue Zone Wealth Advisors, LLC36,980$2.92M0.97%+2,727+8.0%Added
Amalgamated Bank36,022$2.85M0.02%+9,099+33.8%Added
DekaBank Deutsche Girozentrale36,047$2.84M0.01%−6,795−15.9%Reduced
Arrowstreet Capital, Limited Partnership35,817$2.83M0.00%+35,817New
Xponance, Inc.35,431$2.80M0.04%−131−0.4%Reduced
Goodman Advisory Group, LLC34,995$2.77M0.93%+34,995New
Next Century Growth Investors LLC34,402$2.72M0.24%−80.0%Reduced
SG Americas Securities, LLC34,314$2.71M0.02%−6,994−16.9%Reduced
Jane Street Group, LLC33,980$2.69M0.01%−79,123−70.0%Reduced
FDx Advisors, Inc.33,417$2.64M0.07%−1,917−5.4%Reduced
Standard Life Aberdeen plc33,405$2.64M0.01%+1,059+3.3%Added
Park Avenue Securities LLC33,162$2.62M0.05%+1,163+3.6%Added
George Kaiser Family Foundation32,346$2.56M0.37%+11,313+53.8%Added
Allianz Asset Management GmbH32,032$2.53M0.00%−13,892−30.2%Reduced
Barbara Oil Co.32,000$2.53M1.09%00.0%Unchanged
Vestmark Advisory Solutions, Inc.31,640$2.50M0.14%+951+3.1%Added
Cetera Investment Advisers31,012$2.45M0.04%+1,350+4.6%Added
Highland Capital Management, LLC30,481$2.41M0.14%−498−1.6%Reduced
Segall Bryant & Hamill, LLC30,285$2.40M0.02%−472,691−94.0%Reduced
Corient Capital Partners, LLC30,254$2.39M0.16%−815−2.6%Reduced
GPM Growth Investors, Inc.30,188$2.39M1.19%−3,459−10.3%Reduced
Carderock Capital Management Inc30,150$2.38M0.57%−1,022−3.3%Reduced
Atria Investments LLC29,998$2.37M0.04%−254−0.8%Reduced
Elo Mutual Pension Insurance Co29,993$2.37M0.07%+2,303+8.3%Added
Maryland State Retirement & Pension System29,852$2.36M0.06%00.0%Unchanged
Lockheed Martin Investment Management Co29,371$2.32M0.12%+29,371New
Westpac Banking Corp29,340$2.32M0.02%+570+2.0%Added
HawsGoodwin Investment Management LLC28,654$2.27M0.66%−235−0.8%Reduced
Bell Bank28,206$2.23M0.25%+1,819+6.9%Added
AXA S.A.28,175$2.23M0.01%−1,466−4.9%Reduced
Townsend & Associates, Inc29,746$2.22M1.21%+61+0.2%Added
Aurora Investment Managers, LLC.27,800$2.20M2.10%−400−1.4%Reduced
Daiwa Securities Group Inc.27,380$2.16M0.01%+7,960+41.0%Added
Sumitomo Life Insurance Co26,965$2.13M0.05%+10,957+68.4%Added
Schroder Investment Management Group26,368$2.08M0.00%+1,203+4.8%Added
Weiss Multi-Strategy Advisers LLC26,304$2.08M0.05%+26,304New
Fifth Third Bancorp25,848$2.04M0.01%−582−2.2%Reduced
AlphaCrest Capital Management LLC25,159$1.99M0.07%+22,081+717.4%Added
Voya Financial Advisors, Inc.24,520$1.97M0.22%+1,251+5.4%Added
Dai-Ichi Life Insurance Company, Ltd24,330$1.92M0.02%−10,000−29.1%Reduced
Brinker Capital Investments, LLC23,508$1.86M0.03%+2,371+11.2%Added
Magnetar Financial LLC23,047$1.82M0.02%+23,047New
Tower Research Capital LLC (TRC)22,542$1.78M0.03%+13,193+141.1%Added
Prudential Financial Inc21,091$1.78M0.00%−9,438−30.9%Reduced