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CSGP Insider Trading

Insider Ownership Percentage: 1.18%
Insider Buying (Last 12 Months): $5,052,533.00
Insider Selling (Last 12 Months): $2,405,624.64

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: $33.05
Price Change: ▲ Price Increase of +2.55 (8.36%)
As of 08/13/2026 04:00 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
8/7/2026Cynthia Cammett CannCAOSell4,788$30.78$147,374.6418,822View SEC Filing Icon  
8/4/2026Andrew C. FloranceCEOBuy83,300$29.89$2,489,837.001,806,165View SEC Filing Icon  
5/1/2026Andrew C. FloranceCEOBuy71,430$35.20$2,514,336.001,722,865View SEC Filing Icon  
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  
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
8/14/2026Wolf Hill Capital Management LP29,100$824.11M0.1%N/A0.007%Search for SEC Filing on Google Icon
8/13/2026Meritage Group LP5,394,164$152.76M5.9%N/A1.331%Search for SEC Filing on Google Icon
8/13/2026OMERS ADMINISTRATION Corp207,870$5.89M0.0%N/A0.051%Search for SEC Filing on Google Icon
8/13/2026Sanctuary Advisors LLC36,059$1.02M0.0%N/A0.009%Search for SEC Filing on Google Icon
8/13/2026Barbara Oil Co.32,000$0.95M0.3%N/A0.008%Search for SEC Filing on Google Icon
8/13/2026Connor Clark & Lunn Investment Management Ltd.1,169,688$33.13M0.1%N/A0.289%Search for SEC Filing on Google Icon
8/13/2026Bank of Nova Scotia93,291$2.65M0.0%N/A0.023%Search for SEC Filing on Google Icon
8/12/2026Elevation Point Wealth Partners LLC7,721$0.22M0.0%N/A0.002%Search for SEC Filing on Google Icon
8/12/2026Northwestern Mutual Wealth Management Co.12,753$0.36M0.0%N/A0.003%Search for SEC Filing on Google Icon
8/12/2026Quantbot Technologies LP62,491$1.77M0.1%N/A0.015%Search for SEC Filing on Google Icon
8/12/2026Evolve Private Wealth LLC16,163$0.46M0.0%N/A0.004%Search for SEC Filing on Google Icon
8/12/2026Korea Investment CORP698,417$19.78M0.0%N/A0.172%Search for SEC Filing on Google Icon
8/12/2026Ieq Capital LLC351,667$9.96M0.0%N/A0.087%Search for SEC Filing on Google Icon
8/12/2026Callan Family Office LLC11,764$0.33M0.0%N/A0.003%Search for SEC Filing on Google Icon
8/11/2026Allworth Financial LP13,582$0.39M0.0%N/A0.003%Search for SEC Filing on Google Icon
8/11/2026B. Metzler seel. Sohn & Co. AG28,620$0.81M0.0%N/A0.007%Search for SEC Filing on Google Icon
8/10/2026NewEdge Wealth LLC18,538$0.53M0.0%N/A0.005%Search for SEC Filing on Google Icon
8/10/2026Danske Bank A S174,139$4.93M0.0%N/A0.043%Search for SEC Filing on Google Icon
8/10/2026Diversify Advisory Services LLC25,570$0.75M0.0%N/A0.006%Search for SEC Filing on Google Icon
8/8/2026Wealthfront Advisers LLC24,534$0.70M0.0%N/A0.006%Search for SEC Filing on Google Icon
8/8/2026Meeder Advisory Services Inc.10,849$0.31M0.0%N/A0.003%Search for SEC Filing on Google Icon
8/8/2026Meeder Asset Management Inc.12,720$0.36M0.0%N/A0.003%Search for SEC Filing on Google Icon
8/7/2026Citizens Financial Group Inc. RI12,982$0.37M0.0%N/A0.003%Search for SEC Filing on Google Icon
8/7/2026BlackRock Inc.33,813,969$957.61M0.0%N/A8.345%Search for SEC Filing on Google Icon
8/7/2026Pallas Capital Advisors LLC26,889$0.76M0.0%N/A0.007%Search for SEC Filing on Google Icon
8/7/2026Deutsche Bank AG2,264,379$64.13M0.0%N/A0.559%Search for SEC Filing on Google Icon
8/7/2026Perigon Wealth Management LLC8,716$0.25M0.0%N/A0.002%Search for SEC Filing on Google Icon
8/7/2026Mitsubishi UFJ Asset Management Co. Ltd.1,015,380$28.76M0.0%N/A0.251%Search for SEC Filing on Google Icon
8/7/2026Plato Investment Management Ltd8,565$0.24M0.0%N/A0.002%Search for SEC Filing on Google Icon
8/7/2026Simplicity Wealth LLC11,922$0.34M0.0%N/A0.003%Search for SEC Filing on Google Icon
8/6/2026Global Retirement Partners LLC4,451$0.13M0.0%N/A0.001%Search for SEC Filing on Google Icon
8/6/2026Fielder Capital Group LLC16,784$0.48M0.1%N/A0.004%Search for SEC Filing on Google Icon
8/6/2026Bank of New York Mellon Corp2,005,395$56.79M0.0%N/A0.495%Search for SEC Filing on Google Icon
8/6/2026Focus Partners Advisor Solutions LLC19,321$0.55M0.0%N/A0.005%Search for SEC Filing on Google Icon
8/6/2026State of Wyoming6,779$0.19M0.0%N/A0.002%Search for SEC Filing on Google Icon
8/6/2026GSA Capital Partners LLP51,986$1.47M0.1%N/A0.013%Search for SEC Filing on Google Icon
8/3/2026Oppenheimer Asset Management Inc.265,401$7.52M0.1%N/A0.065%Search for SEC Filing on Google Icon
7/10/2026Tema ETFs LLC8,914$0.25M0.0%+18.3%0.002%Search for SEC Filing on Google Icon
7/10/2026Handelsbanken Fonder AB129,700$3.67M0.0%+6.4%0.032%Search for SEC Filing on Google Icon
7/10/2026Salvus Wealth Management LLC12,148$0.34M0.2%-12.3%0.003%Search for SEC Filing on Google Icon
7/8/2026Czech National Bank116,234$3.29M0.0%+0.7%0.028%Search for SEC Filing on Google Icon
7/8/2026PensionDanmark Pensionsforsikringsaktieselskab39,466$1.12M0.0%-71.4%0.010%Search for SEC Filing on Google Icon
7/8/2026Red Spruce Capital LLC76,448$2.17M0.8%+101.0%0.019%Search for SEC Filing on Google Icon
7/8/2026Lincoln Capital LLC14,265$0.40M0.1%-9.1%0.003%Search for SEC Filing on Google Icon
7/7/2026GAMMA Investing LLC7,605$0.22M0.0%-15.2%0.002%Search for SEC Filing on Google Icon
7/7/2026Harbor Investment Advisory LLC3,570$0.10M0.0%-16.9%0.001%Search for SEC Filing on Google Icon
7/2/2026Versant Capital Management Inc3,431$97K0.0%+227.7%0.001%Search for SEC Filing on Google Icon
6/22/2026Sapient Capital LLC5,531$0.22M0.0%-38.7%0.001%Search for SEC Filing on Google Icon
6/18/2026Pacer Advisors Inc.47,092$1.90M0.0%-26.8%0.012%Search for SEC Filing on Google Icon
6/3/2026Parallel Advisors LLC20,346$0.82M0.0%-2.1%0.005%Search for SEC Filing on Google Icon
5/29/2026Ramiah Investment Group7,217$0.29M0.3%+32.1%0.002%Search for SEC Filing on Google Icon
5/26/2026Glenmede Trust Co. NA207,031$8.35M0.0%+168.8%0.051%Search for SEC Filing on Google Icon
5/22/2026Groupama Asset Managment5,705$0.23M0.0%-42.3%0.001%Search for SEC Filing on Google Icon
5/22/2026Segall Bryant & Hamill LLC26,988$1.09M0.0%N/A0.007%Search for SEC Filing on Google Icon
5/20/2026Liontrust Investment Partners LLP35,058$1.41M0.0%+23.8%0.009%Search for SEC Filing on Google Icon
5/19/2026Bank of America Corp DE3,568,107$143.94M0.0%+1.8%0.874%Search for SEC Filing on Google Icon
5/19/2026Edgestream Partners L.P.74,431$3M0.1%+370.9%0.018%Search for SEC Filing on Google Icon
5/19/2026Janus Henderson Group PLC7,724,152$311.59M0.1%+3.4%1.892%Search for SEC Filing on Google Icon
5/19/2026Centaurus Financial Inc.30,534$1.23M0.1%-3.7%0.007%Search for SEC Filing on Google Icon
5/18/2026Spyglass Capital Management LLC1,111,224$44.83M3.2%-29.6%0.272%Search for SEC Filing on Google Icon
5/18/2026Amundi3,280,724$132.34M0.0%-20.3%0.803%Search for SEC Filing on Google Icon
5/18/2026EverSource Wealth Advisors LLC2,721$0.11M0.0%+60.5%0.001%Search for SEC Filing on Google Icon
5/18/2026California State Teachers Retirement System667,111$26.91M0.0%-2.3%0.163%Search for SEC Filing on Google Icon
5/18/2026Royal Bank of Canada1,435,734$57.92M0.0%+9.8%0.352%Search for SEC Filing on Google Icon
5/18/2026Rush Island Management LP483,200$19.49M1.3%N/A0.118%Search for SEC Filing on Google Icon
5/18/2026Empowered Funds LLC40,987$1.65M0.0%+329.6%0.010%Search for SEC Filing on Google Icon
5/16/2026Ashford Capital Management Inc.102,490$4.13M0.5%-58.7%0.025%Search for SEC Filing on Google Icon
5/16/2026The Manufacturers Life Insurance Company248,749$10.04M0.0%-1.4%0.061%Search for SEC Filing on Google Icon
5/16/2026Quantinno Capital Management LP340,154$13.72M0.0%+68.3%0.083%Search for SEC Filing on Google Icon
5/15/2026Ardmore Road Asset Management LP666,900$26.90M1.8%N/A0.163%Search for SEC Filing on Google Icon
5/15/2026Weiss Asset Management LP497,500$20.07M0.3%+1,349.6%0.122%Search for SEC Filing on Google Icon
5/15/2026OMERS ADMINISTRATION Corp21,618$0.87M0.0%+26.5%0.005%Search for SEC Filing on Google Icon
5/15/2026Tiger Global Management LLC1,500,000$60.51M0.3%-33.6%0.367%Search for SEC Filing on Google Icon
5/15/2026Granahan Investment Management LLC161,047$6.50M0.3%+75.2%0.039%Search for SEC Filing on Google Icon
5/15/2026Wealth Alliance LLC9,048$0.37M0.0%+137.3%0.002%Search for SEC Filing on Google Icon
5/15/2026Entropy Technologies LP38,653$1.56M0.1%+194.6%0.009%Search for SEC Filing on Google Icon
5/14/2026Healthcare of Ontario Pension Plan Trust Fund136,727$5.52M0.0%-6.7%0.033%Search for SEC Filing on Google Icon
5/14/2026Public Employees Retirement System of Ohio122,921$4.96M0.0%-3.1%0.030%Search for SEC Filing on Google Icon
5/14/2026Compound Planning Inc.10,674$0.43M0.0%+28.4%0.003%Search for SEC Filing on Google Icon
5/14/2026Arrowstreet Capital Limited Partnership40,911$1.65M0.0%N/A0.010%Search for SEC Filing on Google Icon
5/14/2026Caxton Associates LLP83,948$3.39M0.1%N/A0.021%Search for SEC Filing on Google Icon
5/14/2026Mizuho Markets Americas LLC275,876$11.13M0.3%-93.8%0.068%Search for SEC Filing on Google Icon
5/14/2026Bank of Nova Scotia94,485$3.81M0.0%+16.6%0.023%Search for SEC Filing on Google Icon
5/14/2026Gibbs Wealth Management25,414$1.03M0.1%+149.3%0.006%Search for SEC Filing on Google Icon
5/14/2026Sei Investments Co.386,558$15.59M0.0%-37.8%0.095%Search for SEC Filing on Google Icon
5/14/2026Lido Advisors LLC14,301$0.58M0.0%-44.8%0.004%Search for SEC Filing on Google Icon
5/13/2026Cetera Investment Advisers136,277$5.50M0.0%-9.8%0.033%Search for SEC Filing on Google Icon
5/13/2026Alpha Family Trust5,410$0.22M0.1%N/A0.001%Search for SEC Filing on Google Icon
5/13/2026Prestige Wealth Management Group LLC6,026$0.24M0.0%+10,113.6%0.001%Search for SEC Filing on Google Icon
5/13/2026NewEdge Wealth LLC15,801$0.64M0.0%+21.5%0.004%Search for SEC Filing on Google Icon
5/13/2026First Citizens Bank & Trust Co.343,504$13.86M0.2%+33.4%0.084%Search for SEC Filing on Google Icon
5/13/2026First Trust Advisors LP839,044$33.85M0.0%+19.3%0.205%Search for SEC Filing on Google Icon
5/12/2026IVY Lane Capital Management LLC59,000$2.38M3.6%N/A0.014%Search for SEC Filing on Google Icon
5/12/2026ABN Amro Investment Solutions103,876$4.19M0.1%-0.4%0.025%Search for SEC Filing on Google Icon
5/8/2026PNC Financial Services Group Inc.84,690$3.42M0.0%+11.1%0.021%Search for SEC Filing on Google Icon
5/8/2026Oslo Pensjonsforsikring AS2,309$93K0.0%N/A0.001%Search for SEC Filing on Google Icon
5/8/2026Commerzbank Aktiengesellschaft FI7,761$0.31M0.0%N/A0.002%Search for SEC Filing on Google Icon
5/7/2026Meeder Asset Management Inc.5,392$0.22M0.0%N/A0.001%Search for SEC Filing on Google Icon
5/7/2026Dimensional Fund Advisors LP2,401,852$96.91M0.0%+3.5%0.588%Search for SEC Filing on Google Icon
5/7/2026Parallel Advisors LLC20,346$0.82M0.0%-2.1%0.005%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: $33.05
Low: $30.68
High: $33.10

50 Day Range

MA: $30.11
Low: $27.14
High: $34.23

52 Week Range

Now: $33.05
Low: $25.89
High: $91.89

Volume

7,964,170 shs

Average Volume

7,547,254 shs

Market Capitalization

$13.39 billion

P/E Ratio

173.96

Dividend Yield

N/A

Beta

0.72

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. BlackRock Inc. — 8.35%
  2. Deutsche Bank AG — 0.56%
  3. Bank of New York Mellon Corp — 0.49%
  4. Mitsubishi UFJ Asset Management Co. Ltd. — 0.25%
  5. Korea Investment CORP — 0.17%
  6. Ieq Capital LLC — 0.09%
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. PensionDanmark Pensionsforsikringsaktieselskab
  2. Salvus Wealth Management LLC
  3. Lincoln Capital LLC
  4. GAMMA Investing LLC
  5. Harbor Investment Advisory LLC
Within the last year, company insiders that have sold CoStar Group company stock include:
  1. Frederick G Saint (Insider)
  2. Cynthia Cammett Cann (CAO)
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. BlackRock Inc.
  2. Deutsche Bank AG
  3. Bank of New York Mellon Corp
  4. Mitsubishi UFJ Asset Management Co. Ltd.
  5. Korea Investment CORP
  6. Ieq Capital LLC
  7. Oppenheimer Asset Management Inc.
  8. Danske Bank A S
Within the last year, these company insiders have bought CoStar Group stock:
  1. Andrew C Florance (CEO)
  2. Louise S Sams (Director)
Learn More investors buying CoStar Group stock.

CoStar Group Active Insiders

Andrew C Florance
Andrew C Florance (Age 62)
CEO
2 recent trades
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