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CSGP Insider Trading

Insider Ownership Percentage: 1.09%
Insider Buying (Last 12 Months): $48,360.00
Insider Selling (Last 12 Months): $4,777,764.05

CoStar Group Insider Trading History Chart

This chart shows the insider buying and selling history at CoStar Group by year and by quarter.

Skip ChartChart Data in Insider Trading History Table

CoStar Group Share Price & Price History

Current Price: $40.34
Price Change: ▼ Price Decrease of -0.54 (-1.32%)
As of 03/31/2026 05:00 PM ET

This chart shows the closing price history over time for CSGP up to the past year.

Skip Chart and Table DataPrice Data in Insider Trading History Table
Days: 30 | 90 | 365

CoStar Group Insider Trading History

Transaction DateInsider NameTitleBuy/SellNumber of SharesAverage Share PriceTotal TransactionShares Held After TransactionDetails
3/6/2026Louise S SamsDirectorBuy1,000$48.36$48,360.0020,409View SEC Filing Icon  
8/28/2025Frederick G SaintInsiderSell25,000$90.33$2,258,250.00293,103View SEC Filing Icon  
7/28/2025Cynthia Cammett CannCAOSell2,033$92.85$188,764.0525,771View SEC Filing Icon  
7/28/2025Frederick G SaintInsiderSell25,000$93.23$2,330,750.00319,539View SEC Filing Icon  
3/10/2025Cynthia Cammett CannCAOSell1,749$79.90$139,745.1029,456View SEC Filing Icon  
11/26/2024Michael J. DesmaraisInsiderSell5,500$79.88$439,340.0058,798View SEC Filing Icon  
11/11/2024Cynthia Cammett CannCAOSell1,310$76.85$100,673.5026,485View SEC Filing Icon  
10/25/2024Andrew C. FloranceCEOBuy14,731$74.67$1,099,963.771,263,098View SEC Filing Icon  
10/25/2024Michael R. KleinDirectorSell71,633$74.69$5,350,268.771,913,501View SEC Filing Icon  
7/31/2024Cynthia Cammett CannCAOSell1,200$78.20$93,840.0027,795View SEC Filing Icon  
4/26/2024Michael J. DesmaraisInsiderSell3,800$92.67$352,146.0064,087View SEC Filing Icon  
4/26/2024Scott T WheelerCFOSell122,736$92.61$11,366,580.96303,417View SEC Filing Icon  
11/28/2023John W. HillDirectorSell3,020$84.07$253,891.4017,870View SEC Filing Icon  
6/30/2023Lisa RugglesVPSell30,474$91.42$2,785,933.08156,208View SEC Filing Icon  
6/28/2023Scott T WheelerCFOSell21,530$89.30$1,922,629.00324,714View SEC Filing Icon  
6/27/2023Frank SimuroCTOSell92,300$89.65$8,274,695.00264,483View SEC Filing Icon  
6/26/2023John W. HillDirectorSell1,500$86.57$129,855.0016,934View SEC Filing Icon  
6/12/2023Scott T WheelerCFOSell24,670$80.68$1,990,375.60346,244View SEC Filing Icon  
See Full Table

SEC Filings (Institutional Ownership Changes) for CoStar Group (NASDAQ:CSGP)

96.60% of CoStar Group stock is owned by institutions. Institutional ownership can be a sign of analyst confidence in the fundamentals of the stock.

Institutional Buying and Selling by Quarter

This chart shows the instiutional buying and selling at CSGP by year and by quarter.

Skip Institutional Buying and Selling Chart and Table DataRead Chart Data in Institutional Trading History Table

CoStar Group Institutional Trading History

Reporting DateHedge FundShares HeldMarket Value% of PortfolioQuarterly Change in SharesOwnership in CompanyDetails
3/17/2026Rockefeller Capital Management L.P.5,829$0.39M0.0%-15.9%0.001%Search for SEC Filing on Google Icon
3/9/2026Corient Private Wealth LLC87,000$5.85M0.0%-22.6%0.021%Search for SEC Filing on Google Icon
3/6/2026Hsbc Holdings PLC987,270$66.39M0.0%+34.2%0.235%Search for SEC Filing on Google Icon
3/4/2026BSN CAPITAL PARTNERS Ltd150,857$10.14M0.5%N/A0.036%Search for SEC Filing on Google Icon
3/2/2026Reflection Asset Management404$27K0.0%N/A0.000%Search for SEC Filing on Google Icon
2/27/2026Groupama Asset Managment9,891$0.67M0.0%-9.4%0.002%Search for SEC Filing on Google Icon
2/25/2026Hahn Capital Management LLC55,848$3.76M2.0%-6.4%0.013%Search for SEC Filing on Google Icon
2/24/2026SG Trading Solutions LLC3,237$0.22M0.1%N/A0.001%Search for SEC Filing on Google Icon
2/24/2026Pacer Advisors Inc.64,330$4.33M0.0%+1.6%0.015%Search for SEC Filing on Google Icon
2/20/2026Kovitz Investment Group Partners LLC5,488$0.37M0.0%-43.1%0.001%Search for SEC Filing on Google Icon
2/19/2026T. Rowe Price Investment Management Inc.3,464,794$232.97M0.1%-1.3%0.818%Search for SEC Filing on Google Icon
2/19/2026Compound Planning Inc.8,314$0.56M0.0%-23.6%0.002%Search for SEC Filing on Google Icon
2/19/2026Invesco Ltd.5,387,056$362.23M0.1%+18.7%1.271%Search for SEC Filing on Google Icon
2/19/2026Corient Private Wealth LLC123,418$8.30M0.0%+9.8%0.029%Search for SEC Filing on Google Icon
2/18/2026Mercer Global Advisors Inc. ADV29,005$1.95M0.0%-10.8%0.007%Search for SEC Filing on Google Icon
2/18/2026Vident Advisory LLC14,104$0.95M0.0%+6.1%0.003%Search for SEC Filing on Google Icon
2/18/2026First Citizens Bank & Trust Co.257,404$17.31M0.3%+117.9%0.061%Search for SEC Filing on Google Icon
2/18/2026Wahed Invest LLC10,975$0.74M0.1%N/A0.003%Search for SEC Filing on Google Icon
2/18/2026Delta Global Management LP31,841$2.14M0.1%N/A0.008%Search for SEC Filing on Google Icon
2/18/2026State of Tennessee Department of Treasury116,497$7.17M0.0%-7.9%0.027%Search for SEC Filing on Google Icon
2/18/2026Mackenzie Financial Corp1,660,715$112.47M0.1%+0.9%0.392%Search for SEC Filing on Google Icon
2/18/2026NewEdge Advisors LLC523$35K0.0%-90.9%0.000%Search for SEC Filing on Google Icon
2/18/2026Empowered Funds LLC9,541$0.64M0.0%-30.8%0.002%Search for SEC Filing on Google Icon
2/18/2026XTX Topco Ltd3,475$0.23M0.0%-82.1%0.001%Search for SEC Filing on Google Icon
2/18/2026Ulysses Management LLC330,500$22.22M4.1%+22.2%0.078%Search for SEC Filing on Google Icon
2/18/2026VARCOV Co.3,371$0.23M0.1%N/A0.001%Search for SEC Filing on Google Icon
2/18/2026Virtus Investment Advisers LLC24,381$1.64M0.4%+24.2%0.006%Search for SEC Filing on Google Icon
2/18/2026Wellington Management Group LLP53,668$3.61M0.0%-19.2%0.013%Search for SEC Filing on Google Icon
2/18/2026Spyglass Capital Management LLC1,578,449$106.14M5.3%+57.4%0.372%Search for SEC Filing on Google Icon
2/18/2026Toronto Dominion Bank152,163$10.23M0.0%-12.1%0.036%Search for SEC Filing on Google Icon
2/18/2026Summit Securities Group LLC1,274$86K0.0%+829.9%0.000%Search for SEC Filing on Google Icon
2/18/2026Prana Capital Management LP316,860$21.31M0.8%+90.3%0.075%Search for SEC Filing on Google Icon
2/18/2026Numerai GP LLC30,135$2.03M0.2%N/A0.007%Search for SEC Filing on Google Icon
2/18/2026Odyssean LLC11,342$0.76M0.5%N/A0.003%Search for SEC Filing on Google Icon
2/18/2026Man Group plc225,253$15.15M0.0%+88.9%0.053%Search for SEC Filing on Google Icon
2/18/2026Inspire Investing LLC43,472$2.92M0.3%-3.2%0.010%Search for SEC Filing on Google Icon
2/18/2026Investment Management Corp of Ontario38,843$2.61M0.0%+96.0%0.009%Search for SEC Filing on Google Icon
2/18/2026Janus Henderson Group PLC7,473,380$502.49M0.2%+20.2%1.763%Search for SEC Filing on Google Icon
2/18/2026Gotham Asset Management LLC130,347$8.77M0.0%+475.5%0.031%Search for SEC Filing on Google Icon
2/18/2026Capitolis Liquid Global Markets LLC1,184,000$79.61M0.5%N/A0.279%Search for SEC Filing on Google Icon
2/18/2026Clearline Capital LP118,041$7.94M0.4%N/A0.028%Search for SEC Filing on Google Icon
2/18/2026Aureus Asset Management LLC337,117$22.67M1.4%-0.6%0.080%Search for SEC Filing on Google Icon
2/18/2026Balyasny Asset Management L.P.6,343$0.43M0.0%N/A0.001%Search for SEC Filing on Google Icon
2/18/2026Banco Bilbao Vizcaya Argentaria S.A.14,005$0.94M0.0%+4.4%0.003%Search for SEC Filing on Google Icon
2/18/2026Bamco Inc. NY19,498,099$1.31B3.6%+1.3%4.601%Search for SEC Filing on Google Icon
2/18/2026Boothbay Fund Management LLC5,539$0.37M0.0%+75.0%0.001%Search for SEC Filing on Google Icon
2/17/2026Freestone Grove Partners LP201,205$13.53M0.1%+356.6%0.047%Search for SEC Filing on Google Icon
2/17/2026Guggenheim Capital LLC108,846$7.32M0.1%-0.8%0.026%Search for SEC Filing on Google Icon
2/17/2026Caisse de depot et placement du Quebec587,098$39.48M0.1%+1,462.4%0.139%Search for SEC Filing on Google Icon
2/17/2026American Capital Management Inc.825,340$55.50M2.4%+4.0%0.195%Search for SEC Filing on Google Icon
2/17/2026Viking Global Investors LP1,442,582$97M0.3%-22.0%0.340%Search for SEC Filing on Google Icon
2/17/2026Visualize Group LP214,388$14.42M5.4%-50.0%0.051%Search for SEC Filing on Google Icon
2/17/2026Schonfeld Strategic Advisors LLC39,225$2.64M0.0%-145.4%0.009%Search for SEC Filing on Google Icon
2/17/2026Third Point LLC3,165,000$212.82M2.9%+4.9%0.747%Search for SEC Filing on Google Icon
2/17/2026RGM Capital LLC1,995,460$134.18M6.5%-4.6%0.471%Search for SEC Filing on Google Icon
2/17/2026DV Equities LLC590$40K0.0%N/A0.000%Search for SEC Filing on Google Icon
2/17/2026AQR Capital Management LLC369,352$24.84M0.0%+14.1%0.087%Search for SEC Filing on Google Icon
2/17/2026Cetera Investment Advisers151,023$10.16M0.0%-7.2%0.036%Search for SEC Filing on Google Icon
2/17/2026DF Dent & Co. Inc.2,007,630$134.99M1.9%-7.8%0.474%Search for SEC Filing on Google Icon
2/17/2026ION Fund Management Ltd461,000$31M3.6%N/A0.109%Search for SEC Filing on Google Icon
2/17/2026Laird Norton Wetherby Trust Company LLC9,109$0.61M0.0%N/A0.002%Search for SEC Filing on Google Icon
2/17/2026Stansberry Asset Management LLC8,002$0.54M0.1%-9.7%0.002%Search for SEC Filing on Google Icon
2/17/2026Tiger Global Management LLC2,259,109$151.90M0.5%-30.4%0.533%Search for SEC Filing on Google Icon
2/17/2026Amundi4,114,516$276.66M0.1%+31.2%0.971%Search for SEC Filing on Google Icon
2/17/2026Caden Capital Partners LP1,515$0.10M0.2%-99.6%0.000%Search for SEC Filing on Google Icon
2/17/2026FIL Ltd639,883$43.03M0.0%+198.7%0.151%Search for SEC Filing on Google Icon
2/17/2026Northern Trust Corp3,466,062$233.06M0.0%-7.6%0.818%Search for SEC Filing on Google Icon
2/17/2026Price T Rowe Associates Inc. MD1,198,832$80.61M0.0%-5.2%0.283%Search for SEC Filing on Google Icon
2/17/2026T. Rowe Price Investment Management Inc.2,254,457$151.59M0.2%-35.8%0.532%Search for SEC Filing on Google Icon
2/17/2026Weiss Asset Management LP34,320$2.31M0.0%N/A0.008%Search for SEC Filing on Google Icon
2/17/2026Osaic Holdings Inc.13,109$0.88M0.0%-69.6%0.003%Search for SEC Filing on Google Icon
2/17/2026Quantitative Investment Management LLC35,749$2.40M0.2%N/A0.008%Search for SEC Filing on Google Icon
2/17/2026Adage Capital Partners GP L.L.C.382,600$25.73M0.0%-0.8%0.090%Search for SEC Filing on Google Icon
2/17/2026Tower Research Capital LLC TRC 28,220$1.90M0.0%+53.7%0.007%Search for SEC Filing on Google Icon
2/17/2026Public Employees Retirement System of Ohio126,840$8.53M0.0%-39.0%0.030%Search for SEC Filing on Google Icon
2/17/2026California State Teachers Retirement System682,638$45.90M0.0%-2.0%0.161%Search for SEC Filing on Google Icon
2/17/2026Russell Investments Group Ltd.547,600$36.84M0.0%+15.2%0.129%Search for SEC Filing on Google Icon
2/17/2026Lombard Odier Asset Management Switzerland SA16,820$1.13M0.0%-4.2%0.004%Search for SEC Filing on Google Icon
2/17/2026Atom Investors LP3,959$0.27M0.0%N/A0.001%Search for SEC Filing on Google Icon
2/17/2026Granahan Investment Management LLC91,929$6.18M0.3%-66.0%0.022%Search for SEC Filing on Google Icon
2/17/2026State of Wisconsin Investment Board228,542$15.37M0.0%-9.2%0.054%Search for SEC Filing on Google Icon
2/17/2026Captrust Financial Advisors33,234$2.24M0.0%+17.6%0.008%Search for SEC Filing on Google Icon
2/17/2026Fred Alger Management LLC112,357$7.56M0.0%-36.5%0.027%Search for SEC Filing on Google Icon
2/17/2026&PARTNERS22,927$1.51M0.0%-14.4%0.005%Search for SEC Filing on Google Icon
2/17/2026ExodusPoint Capital Management LP139,296$9.37M0.1%N/A0.033%Search for SEC Filing on Google Icon
2/17/2026Ashford Capital Management Inc.247,959$16.67M1.9%-11.7%0.059%Search for SEC Filing on Google Icon
2/17/2026Blair William & Co. IL2,023,523$136.06M0.4%-35.3%0.477%Search for SEC Filing on Google Icon
2/17/2026Royal Bank of Canada1,307,942$87.95M0.0%+2.4%0.309%Search for SEC Filing on Google Icon
2/17/2026Bank of Marin7,396$0.50M0.3%+24.8%0.002%Search for SEC Filing on Google Icon
2/17/2026Waterway Wealth Management LLC11,424$0.77M0.1%-31.4%0.003%Search for SEC Filing on Google Icon
2/17/2026Delta Global Management LP31,841$2.14M0.1%N/A0.008%Search for SEC Filing on Google Icon
2/17/2026Rakuten Investment Management Inc.78,622$5.32M0.0%+681.8%0.019%Search for SEC Filing on Google Icon
2/17/2026Needham Investment Management LLC60,500$4.07M0.3%+1,761.5%0.014%Search for SEC Filing on Google Icon
2/16/2026Oarsman Capital Inc.6,002$0.40M0.1%-11.6%0.001%Search for SEC Filing on Google Icon
2/16/2026Squarepoint Ops LLC795,563$53.49M0.1%+5,664.9%0.188%Search for SEC Filing on Google Icon
2/16/2026USS Investment Management Ltd74,622$5.02M0.0%+1.3%0.018%Search for SEC Filing on Google Icon
2/16/2026Vanguard Personalized Indexing Management LLC27,859$1.87M0.0%-36.4%0.007%Search for SEC Filing on Google Icon
2/16/2026Verition Fund Management LLC16,042$1.08M0.0%-46.4%0.004%Search for SEC Filing on Google Icon
2/16/2026MML Investors Services LLC92,277$6.21M0.0%+0.4%0.022%Search for SEC Filing on Google Icon
2/16/2026Mariner LLC48,017$3.23M0.0%-13.6%0.011%Search for SEC Filing on Google Icon
Data available starting January 2016

See Full Table
CoStar Group logo
CoStar Group, Inc. provides information, analytics, and online marketplace services to the commercial real estate, hospitality, residential, and related professionals industries in the United States, Canada, Europe, the Asia Pacific, and Latin America. The company offers CoStar Property that provides inventory of office, industrial, retail, multifamily, hospitality, and student housing properties and land; CoStar Sales, a robust database of comparable commercial real estate sales transactions; CoStar Market Analytics to view and report on aggregated market and submarket trends; and CoStar Tenant, an online business-to-business prospecting and analytical tool that provides tenant information. It also provides Leasing, a tool to capture, manage, and maintain lease data; CoStar Lease Analysis; Public Record, a searchable database of commercially zoned parcels; CoStar Real Estate Manager, a real estate lease administration, portfolio management, and lease accounting compliance software solution; and CoStar Risk Analytics and CoStar Investment. In addition, it offers apartment marketing sites, such as ApartmentFinder.com, ForRent.com, ApartmentHomeLiving.com, WestsideRentals.com, AFTER55.com, CorporateHousing.com, ForRentUniversity.com, Apartamentos.com, and Off Campus Partners; LoopNet Premium Lister; LoopNet Diamond, Platinum, and Gold Ads; LandsofAmerica.com, LandAndFarm.com, and LandWatch.com for rural land for-sale; BizBuySell.com, BizQuest.com, and FindaFranchise.com for operating businesses and franchises for-sale; Ten-X, an online auction platform for commercial real estate; and HomeSnap, an online and mobile software platform, as well as Homes.com, a homes for sale listings site. The company was founded in 1987 and is headquartered in Washington, the District of Columbia.
Read More on CoStar Group

Today's Range

Now: $40.34
Low: $39.56
High: $41.63

50 Day Range

MA: $49.24
Low: $39.77
High: $66.26

52 Week Range

Now: $40.34
Low: $39.18
High: $97.43

Volume

5,481,863 shs

Average Volume

6,110,023 shs

Market Capitalization

$16.93 billion

P/E Ratio

4,038.04

Dividend Yield

N/A

Beta

0.89

Who are the company insiders with the largest holdings of CoStar Group?

CoStar Group's top insider investors include:
  1. Michael R Klein (Director)
  2. Andrew C Florance (CEO)
  3. Scott T Wheeler (CFO)
  4. Frederick G Saint (Insider)
  5. Frank Simuro (CTO)
  6. Lisa Ruggles (VP)
  7. Andrew C Florance (CEO)
  8. Warren Haber (Director)
  9. Michael J Desmarais (Insider)
  10. Brian Radecki (CFO)
Learn More about top insider investors at CoStar Group.

Who are the major institutional investors of CoStar Group?

CoStar Group's top institutional investors include:
  1. Vanguard Group Inc. — 16.54%
  2. Bamco Inc. NY — 4.60%
  3. State Street Corp — 4.40%
  4. Principal Financial Group Inc. — 4.14%
  5. Baillie Gifford & Co. — 3.05%
  6. Geode Capital Management LLC — 2.87%
Learn More about top institutional investors of CoStar Group stock.

Which institutional investors are selling CoStar Group stock?

Within the last quarter, CSGP stock was sold by these institutional investors:
  1. Massachusetts Financial Services Co. MA
  2. Macquarie Group Ltd.
  3. Morgan Stanley
  4. Franklin Resources Inc.
  5. Polen Capital Management LLC
  6. T. Rowe Price Investment Management Inc.
  7. JPMorgan Chase & Co.
  8. Blair William & Co. IL
Within the last year, company insiders that have sold CoStar Group company stock include:
  1. Michael R Klein (Director)
  2. Andrew C Florance (CEO)
Learn More investors selling CoStar Group stock.

Which institutional investors are buying CoStar Group stock?

During the last quarter, CSGP stock was bought by institutional investors including:
  1. Norges Bank
  2. Baillie Gifford & Co.
  3. Capital International Investors
  4. Goldman Sachs Group Inc.
  5. Jupiter Asset Management Ltd.
  6. Janus Henderson Group PLC
  7. Capitolis Liquid Global Markets LLC
  8. Barclays PLC
Within the last year, these company insiders have bought CoStar Group stock:
  1. Michael R Klein (Director)
  2. Andrew C Florance (CEO)
Learn More investors buying CoStar Group stock.

CoStar Group Active Insiders

Andrew C Florance
Andrew C Florance (Age 62)
CEO
Scott T. Wheeler
Scott T. Wheeler (Age 62)
CFO
Laura Cox Kaplan
Laura Cox Kaplan (Age 55)
Director
John W Hill
John W Hill
Director
Frank Simuro
Frank Simuro (Age 59)
CTO
Michael R Klein
Michael R Klein
Director
Louise S Sams
Louise S Sams
Director
1 recent trades
Lisa Ruggles
Lisa Ruggles (Age 58)
VP
Frederick G. Saint
Frederick G. Saint (Age 60)
Insider
Michael J Desmarais
Michael J Desmarais
Insider