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CSGP Insider Trading

Insider Ownership Percentage: 1.09%
Insider Buying (Last 12 Months): $2,562,696.00
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: $32.68
Price Change: ▲ Price Increase of +0.83 (2.61%)
As of 05/15/2026 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
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  
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
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
5/7/2026Hahn Capital Management LLC46,447$1.87M1.2%-16.8%0.011%Search for SEC Filing on Google Icon
5/7/2026KBC Group NV91,783$3.70M0.0%-1.9%0.022%Search for SEC Filing on Google Icon
5/7/2026SEB Asset Management AB83,393$3.36M0.0%N/A0.020%Search for SEC Filing on Google Icon
5/7/2026Swiss National Bank1,243,765$50.17M0.0%+7.1%0.305%Search for SEC Filing on Google Icon
5/6/2026California Public Employees Retirement System532,683$21.49M0.0%-27.2%0.130%Search for SEC Filing on Google Icon
5/6/2026Assetmark Inc.13,360$0.54M0.0%+520.5%0.003%Search for SEC Filing on Google Icon
5/6/2026Bessemer Group Inc.17,675$0.71M0.0%-8.2%0.004%Search for SEC Filing on Google Icon
5/6/2026Allspring Global Investments Holdings LLC18,300$0.73M0.0%-90.0%0.004%Search for SEC Filing on Google Icon
5/5/2026Wealthfront Advisers LLC20,936$0.85M0.0%-20.3%0.005%Search for SEC Filing on Google Icon
5/5/2026D.A. Davidson & CO.31,228$1.26M0.0%-7.0%0.008%Search for SEC Filing on Google Icon
5/5/2026Marks Group Wealth Management Inc5,465$0.22M0.0%-11.7%0.001%Search for SEC Filing on Google Icon
5/5/2026Bank of New York Mellon Corp2,400,680$96.84M0.0%-41.6%0.588%Search for SEC Filing on Google Icon
5/5/2026Three Seasons Wealth LLC26,644$1.08M0.4%+242.2%0.007%Search for SEC Filing on Google Icon
5/5/2026Sanctuary Advisors LLC37,300$1.51M0.0%+53.7%0.009%Search for SEC Filing on Google Icon
5/5/2026Checchi Capital Advisers LLC5,061$0.20M0.0%+22.9%0.001%Search for SEC Filing on Google Icon
5/4/2026Mattern Capital Management LLC19,745$0.80M0.1%+19.9%0.005%Search for SEC Filing on Google Icon
5/4/2026State of Michigan Retirement System116,500$4.70M0.0%-0.3%0.028%Search for SEC Filing on Google Icon
5/4/2026Principal Financial Group Inc.17,696,192$713.87M0.4%+0.7%4.215%Search for SEC Filing on Google Icon
5/4/2026Chicago Partners Investment Group LLC17,954$0.70M0.0%+6.6%0.004%Search for SEC Filing on Google Icon
5/4/2026Teachers Retirement System of The State of Kentucky269,783$10.88M0.1%+1.1%0.064%Search for SEC Filing on Google Icon
5/2/2026Castleview Partners LLC8,012$0.32M0.2%N/A0.002%Search for SEC Filing on Google Icon
5/2/2026Diversify Wealth Management LLC19,576$0.79M0.0%+308.9%0.005%Search for SEC Filing on Google Icon
5/1/2026Lincoln Capital LLC15,693$0.63M0.1%-4.0%0.004%Search for SEC Filing on Google Icon
5/1/2026Commonwealth of Pennsylvania Public School Empls Retrmt SYS155,726$6.28M0.0%+58.0%0.037%Search for SEC Filing on Google Icon
5/1/2026Fifth Third Bancorp80,738$3.26M0.0%+926.4%0.019%Search for SEC Filing on Google Icon
5/1/2026Candriam S.C.A.21,512$0.87M0.0%+14.8%0.005%Search for SEC Filing on Google Icon
5/1/2026Sequoia Financial Advisors LLC51,688$2.09M0.0%+4.7%0.012%Search for SEC Filing on Google Icon
5/1/2026Kornitzer Capital Management Inc. KS207,766$8.38M0.2%-7.4%0.049%Search for SEC Filing on Google Icon
4/30/2026Azzad Asset Management Inc. ADV11,513$0.46M0.0%-5.0%0.003%Search for SEC Filing on Google Icon
4/30/2026Sumitomo Mitsui Trust Group Inc.954,074$38.49M0.0%-4.6%0.227%Search for SEC Filing on Google Icon
4/30/2026Resona Asset Management Co. Ltd.131,014$5.30M0.0%+4.6%0.031%Search for SEC Filing on Google Icon
4/30/2026Personal CFO Solutions LLC34,585$1.40M0.2%+215.2%0.008%Search for SEC Filing on Google Icon
4/29/2026Swedbank AB98,881$3.99M0.0%-67.4%0.024%Search for SEC Filing on Google Icon
4/29/2026Integrated Advisors Network LLC6,140$0.25M0.0%N/A0.001%Search for SEC Filing on Google Icon
4/28/2026Whittier Trust Co. of Nevada Inc.976$40K0.0%-29.8%0.000%Search for SEC Filing on Google Icon
4/28/2026Stephens Inc. AR42,648$1.72M0.0%+47.5%0.010%Search for SEC Filing on Google Icon
4/28/2026B.O.S.S. Retirement Advisors LLC6,360$0.26M0.1%-21.2%0.002%Search for SEC Filing on Google Icon
4/28/2026Stephens Investment Management Group LLC872,463$35.20M0.5%-21.8%0.208%Search for SEC Filing on Google Icon
4/28/2026Praxis Investment Management Inc.18,734$0.76M0.0%N/A0.004%Search for SEC Filing on Google Icon
4/28/2026V Square Quantitative Management LLC6,205$0.25M0.0%+22.4%0.001%Search for SEC Filing on Google Icon
4/28/2026QRG Capital Management Inc.30,939$1.25M0.0%+19.2%0.007%Search for SEC Filing on Google Icon
4/27/2026HB Wealth Management LLC66,457$2.68M0.0%-10.0%0.016%Search for SEC Filing on Google Icon
4/27/2026World Investment Advisors7,321$0.30M0.0%+115.9%0.002%Search for SEC Filing on Google Icon
4/27/2026Y Intercept Hong Kong Ltd311,918$12.58M0.2%+1,367.8%0.074%Search for SEC Filing on Google Icon
4/27/2026Leonteq Securities AG4,743$0.19M0.0%+28.0%0.001%Search for SEC Filing on Google Icon
4/27/2026Fjarde AP Fonden Fourth Swedish National Pension Fund130,770$5.28M0.0%+68.4%0.031%Search for SEC Filing on Google Icon
4/27/2026Fideuram Intesa Sanpaolo Private Banking S.P.A.5,499$0.22M0.0%-54.2%0.001%Search for SEC Filing on Google Icon
4/25/2026Keybank National Association OH23,180$0.94M0.0%+41.4%0.006%Search for SEC Filing on Google Icon
4/24/2026CHICAGO TRUST Co NA8,140$0.33M0.1%-37.4%0.002%Search for SEC Filing on Google Icon
4/24/2026Conestoga Capital Advisors LLC7,859$0.32M0.0%-36.0%0.002%Search for SEC Filing on Google Icon
4/24/2026USS Investment Management Ltd78,020$3.15M0.0%+4.6%0.019%Search for SEC Filing on Google Icon
4/24/2026IFM Investors Pty Ltd85,669$3.46M0.0%+3.3%0.020%Search for SEC Filing on Google Icon
4/24/2026iA Global Asset Management Inc.50,393$2.03M0.0%-4.3%0.012%Search for SEC Filing on Google Icon
4/24/2026Peregrine Capital Management LLC699,152$28.20M1.0%-6.6%0.167%Search for SEC Filing on Google Icon
4/24/2026Harbor Investment Advisory LLC4,295$0.17M0.0%-30.4%0.001%Search for SEC Filing on Google Icon
4/23/2026Premier Path Wealth Partners LLC13,628$0.55M0.1%N/A0.003%Search for SEC Filing on Google Icon
4/23/2026Inspire Investing LLC50,437$2.04M0.2%+16.0%0.012%Search for SEC Filing on Google Icon
4/23/2026Lansforsakringar Fondforvaltning AB publ 138,317$5.58M0.0%+1.7%0.033%Search for SEC Filing on Google Icon
4/22/2026Skylands Capital LLC32,050$1.29M0.2%+88.0%0.008%Search for SEC Filing on Google Icon
4/22/2026Janney Montgomery Scott LLC26,485$1.07M0.0%-32.3%0.006%Search for SEC Filing on Google Icon
4/22/2026Louisbourg Investments Inc.175,086$7.06M1.2%+93.8%0.042%Search for SEC Filing on Google Icon
4/22/2026Pictet Asset Management Holding SA1,372,159$55.36M0.1%+30.0%0.327%Search for SEC Filing on Google Icon
4/22/2026Sterling Capital Management LLC16,008$0.65M0.0%-50.4%0.004%Search for SEC Filing on Google Icon
4/22/2026Venturi Wealth Management LLC11,337$0.46M0.0%-3.0%0.003%Search for SEC Filing on Google Icon
4/21/2026Waterway Wealth Management LLC27,670$1.12M0.2%+142.2%0.007%Search for SEC Filing on Google Icon
4/21/2026Aaron Wealth Advisors LLC8,130$0.33M0.0%+8.8%0.002%Search for SEC Filing on Google Icon
4/21/2026Louisiana State Employees Retirement System49,200$1.99M0.0%N/A0.012%Search for SEC Filing on Google Icon
4/20/2026Vanderbilt University73,753$2.98M0.6%-42.0%0.018%Search for SEC Filing on Google Icon
4/20/2026Fifth Third Wealth Advisors LLC5,638$0.23M0.0%N/A0.001%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: $32.68
Low: $31.92
High: $33.02

50 Day Range

MA: $39.35
Low: $31.85
High: $48.91

52 Week Range

Now: $32.68
Low: $31.35
High: $97.43

Volume

37,829,651 shs

Average Volume

6,767,899 shs

Market Capitalization

$13.35 billion

P/E Ratio

544.76

Dividend Yield

N/A

Beta

0.75

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. Principal Financial Group Inc. — 4.22%
  2. Dimensional Fund Advisors LP — 0.59%
  3. Bank of New York Mellon Corp — 0.59%
  4. Tiger Global Management LLC — 0.37%
  5. Pictet Asset Management Holding SA — 0.33%
  6. Swiss National Bank — 0.30%
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. Mizuho Markets Americas LLC
  2. Bank of New York Mellon Corp
  3. Tiger Global Management LLC
  4. Stephens Investment Management Group LLC
  5. Sei Investments Co.
  6. Riverbridge Partners LLC
  7. Swedbank AB
  8. California Public Employees Retirement System
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. Ardmore Road Asset Management LP
  2. Weiss Asset Management LP
  3. Pictet Asset Management Holding SA
  4. Y Intercept Hong Kong Ltd
  5. First Trust Advisors LP
  6. Principal Financial Group Inc.
  7. First Citizens Bank & Trust Co.
  8. Louisbourg Investments Inc.
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
1 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