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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 2022

Institutional positions in Costar Group, Inc. as of Mar 31, 2022. 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
589
−37 vs. Q4 2021
Shares held
378.5M
+3.52M (+0.9%) vs. Q4 2021
Total value
$25.2B
−$4.44B (−15.0%) vs. Q4 2021
New holders
68
245 more added
Sold out
105
203 more reduced

7 institutions that held it in Q4 2021 haven't filed for Q1 2022 yet. Not filing isn't selling, so they aren't counted as sold out or in the changes above.

Compare with Q4 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 holdersQ1 2022: 589 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 2022: $25.2B
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 2022

Shares, value and share of portfolio for each institution holding Costar Group, Inc.; share changes are against Q4 2021.

Institutions holding CSGP in Q1 2022
InstitutionSharesValue% of portfolioChange in sharesAction
Westfield Capital Management Co LP74,500$4.96M0.03%00.0%Unchanged
Bank of Montreal70,776$4.82M0.00%−28,044−28.4%Reduced
Forsta Ap-Fonden72,200$4.81M0.05%−9,300−11.4%Reduced
Utah Retirement Systems69,880$4.66M0.06%−1,200−1.7%Reduced
MML Investors Services, LLC69,114$4.60M0.03%+8,943+14.9%Added
Vetamer Capital Management, L.P.68,992$4.60M3.20%−2,674−3.7%Reduced
Commerce Bank68,834$4.58M0.03%+9,372+15.8%Added
S.E.E.D. Planning Group LLC68,705$4.58M1.95%+68,705New
Skandinaviska Enskilda Banken AB (publ)65,627$4.37M0.03%−3,247−4.7%Reduced
Azzad Asset Management Inc65,012$4.33M0.62%+10,180+18.6%Added
Gulf International Bank (UK) Ltd64,262$4.28M0.06%00.0%Unchanged
Claar Advisors LLC61,750$4.11M1.20%−4,800−7.2%Reduced
ProShare Advisors LLC61,713$4.11M0.01%−3,572−5.5%Reduced
State of Alaska, Department of Revenue61,495$4.10M0.04%−6,510−9.6%Reduced
Banco Santander, S.A.61,260$4.08M0.04%−23,362−27.6%Reduced
British Columbia Investment Management Corp60,971$4.06M0.03%−8,502−12.2%Reduced
IFM Investors Pty Ltd59,860$3.99M0.06%+9,347+18.5%Added
Zurcher Kantonalbank (Zurich Cantonalbank)58,941$3.93M0.02%+1,707+3.0%Added
Ninety One North America, Inc.55,732$3.71M0.14%+55,732New
Quest Investment Management LLC55,636$3.71M0.35%+1,802+3.3%Added
Banque Pictet & Cie SA55,200$3.68M0.03%00.0%Unchanged
Formula Growth Ltd55,000$3.66M0.70%00.0%Unchanged
Cubist Systematic Strategies, LLC54,943$3.66M0.03%−75,615−57.9%Reduced
Stephens Inc53,419$3.56M0.06%+109+0.2%Added
Marks Group Wealth Management, Inc53,040$3.53M0.44%+7,722+17.0%Added
Janney Montgomery Scott LLC52,607$3.50M0.01%−3,234−5.8%Reduced
Public Employees Retirement Association of Colorado51,420$3.42M0.02%−2,490−4.6%Reduced
B. Metzler seel. Sohn & Co. AG50,544$3.37M0.05%−2,444−4.6%Reduced
Holocene Advisors, LP49,569$3.30M0.02%−16,866−25.4%Reduced
CWM Advisors, LLC47,857$3.19M0.37%−5,724−10.7%Reduced
Twin Tree Management, LP47,571$3.17M0.06%+42,392+818.5%Added
ArrowMark Colorado Holdings LLC47,250$3.15M0.03%+47,250New
Nisa Investment Advisors, LLC46,950$3.13M0.02%−10,300−18.0%Reduced
Natixis46,356$3.09M0.01%−84,826−64.7%Reduced
Scout Investments, Inc.45,639$3.04M0.05%−255,914−84.9%Reduced
Shaker Investments LLC45,401$3.02M1.54%−17,589−27.9%Reduced
Tredje AP-fonden44,958$3.00M0.06%00.0%Unchanged
Federation des caisses Desjardins du Quebec44,211$2.94M0.03%−383−0.9%Reduced
Regions Financial Corp43,933$2.93M0.02%−451−1.0%Reduced
Amalgamated Bank43,275$2.88M0.02%+7,253+20.1%Added
Amalgamated Financial Corp.43,275$2.88M0.02%+43,275New
Blue Zone Wealth Advisors, LLC42,777$2.85M1.06%+5,797+15.7%Added
Park Avenue Securities LLC42,537$2.83M0.05%+9,375+28.3%Added
Clearbridge Investments, LLC42,347$2.82M0.00%−34−0.1%Reduced
Yarbrough Capital, LLC41,586$2.77M0.16%+2,240+5.7%Added
DekaBank Deutsche Girozentrale38,903$2.68M0.01%+2,856+7.9%Added
Cambridge Investment Research Advisors, Inc.40,167$2.68M0.01%−8,443−17.4%Reduced
HighTower Advisors, LLC39,668$2.64M0.01%+838+2.2%Added
Handelsbanken Fonder AB39,098$2.60M0.01%00.0%Unchanged
SG Capital Management LLC38,939$2.59M1.27%+38,939New
Papp L Roy & Associates37,953$2.53M0.32%−500−1.3%Reduced
Daiwa Securities Group Inc.37,840$2.52M0.02%+10,460+38.2%Added
Cetera Investment Advisers36,387$2.42M0.03%+5,375+17.3%Added
Atria Investments LLC36,070$2.40M0.04%+6,072+20.2%Added
Xponance, Inc.35,752$2.38M0.04%+321+0.9%Added
Next Century Growth Investors LLC34,666$2.31M0.23%+264+0.8%Added
Standard Life Aberdeen plc32,544$2.21M0.01%−861−2.6%Reduced
George Kaiser Family Foundation32,346$2.15M0.35%00.0%Unchanged
Barbara Oil Co.32,000$2.13M0.98%00.0%Unchanged
Elo Mutual Pension Insurance Co31,061$2.07M0.06%+1,068+3.6%Added
Highland Capital Management, LLC30,689$2.04M0.12%+208+0.7%Added
Vestmark Advisory Solutions, Inc.30,354$2.02M0.11%−1,286−4.1%Reduced
Bell Bank30,292$2.02M0.23%+2,086+7.4%Added
Townsend & Associates, Inc31,740$2.02M0.93%+1,994+6.7%Added
GPM Growth Investors, Inc.30,188$2.01M1.11%00.0%Unchanged
Maryland State Retirement & Pension System29,852$1.99M0.05%00.0%Unchanged
Lockheed Martin Investment Management Co29,371$1.96M0.11%00.0%Unchanged
Allstate Corp29,367$1.96M0.05%+22,758+344.3%Added
Westpac Banking Corp29,105$1.94M0.02%−235−0.8%Reduced
DuPont Capital Management Corp28,492$1.90M0.08%+8,003+39.1%Added
Aurora Investment Managers, LLC.27,974$1.86M1.39%+174+0.6%Added
Corient Capital Partners, LLC27,588$1.84M0.12%−2,666−8.8%Reduced
LMCG Investments, LLC27,009$1.80M0.10%+27,009New
Caisse de Depot Et Placement du Quebec26,680$1.78M0.00%−10,700−28.6%Reduced
Weiss Multi-Strategy Advisers LLC26,304$1.75M0.04%00.0%Unchanged
Schroder Investment Management Group25,733$1.75M0.00%−635−2.4%Reduced
Sumitomo Life Insurance Co26,207$1.75M0.04%−758−2.8%Reduced
Jane Street Group, LLC24,850$1.66M0.00%−9,130−26.9%Reduced
Voya Financial Advisors, Inc.24,012$1.63M0.19%−508−2.1%Reduced
FDx Advisors, Inc.23,773$1.58M0.05%−9,644−28.9%Reduced
First Trust Advisors LP23,666$1.58M0.00%−102,795−81.3%Reduced
TD Private Client Wealth LLC23,006$1.53M0.07%+1,887+8.9%Added
Goodman Advisory Group, LLC22,886$1.52M0.53%−12,109−34.6%Reduced
SG Americas Securities, LLC22,734$1.51M0.01%−11,580−33.7%Reduced
Bridgewater Associates, LP22,278$1.48M0.01%+16,588+291.5%Added
Prudential Financial Inc21,534$1.43M0.00%+443+2.1%Added
MetLife Investment Management21,430$1.43M0.01%+21,430New
Candriam Luxembourg S.C.A.21,023$1.40M0.01%+1,400+7.1%Added
Nordea Investment Management AB20,560$1.39M0.00%00.0%Unchanged
Mariner, LLC20,784$1.38M0.01%+2,964+16.6%Added
Malaga Cove Capital, LLC20,494$1.36M0.63%−63−0.3%Reduced
Chartwell Investment Partners, LLC20,332$1.35M0.05%−70.0%Reduced
Sciencast Management LP20,839$1.35M0.31%−22,116−51.5%Reduced
Commonwealth Equity Services, LLC20,068$1.34M0.00%+676+3.5%Added
D.A. Davidson & Co.20,009$1.33M0.01%+2,363+13.4%Added
Redmond Asset Management, LLC19,765$1.32M0.39%+300+1.5%Added
Centaurus Financial, Inc.19,606$1.31M0.10%+8,659+79.1%Added
Icon Wealth Partners, LLC19,423$1.29M0.13%+9,490+95.5%Added
Leisure Capital Management19,395$1.29M0.65%+981+5.3%Added
Tower Research Capital LLC (TRC)19,375$1.29M0.01%−3,167−14.0%Reduced