CoStar Group Ownership

Who are the major shareholders and have insiders been buying or selling?

Recent Insider Transactions

BIT:1CSGP Recent Insider Transactions by Companies or Individuals
Date	Value	Name	Entity	Shares	Max Price
10 Dec 24	Sell€199,820	John Hill	Individual	2,735	€73.06
27 Nov 24	Sell€127,973	Christopher Nassetta	Individual	1,681	€76.13
26 Nov 24	Sell€419,570	Michael Desmarais	Individual	5,500	€76.29
25 Oct 24	Buy€1,016,369	Andrew Florance	Individual	14,731.03	€69.00
25 Oct 24	Sell€4,943,648	Michael Klein	Individual	71,633	€69.01
30 Jul 24	Sell€95,867	John Hill	Individual	1,325	€72.35
16 May 24	Sell€203,389	Frederick Saint	Individual	2,500	€81.36
09 May 24	Sell€1,691,926	Lisa Ruggles	Individual	20,000	€84.60
26 Apr 24	Sell€329,855	Michael Desmarais	Individual	3,800	€86.80

Insider Trading Volume

Insider Buying: 1CSGP insiders have sold more shares than they have bought in the past 3 months.

Ownership Breakdown

What is the ownership structure of 1CSGP?
Owner Type	Number of Shares	Ownership Percentage
General Public	236,976	0.0578%
State or Government	342,678	0.0836%
Individual Insiders	4,738,169	1.16%
Institutions	404,641,694	98.7%

Dilution of Shares: Shareholders have not been meaningfully diluted in the past year.

Top Shareholders

Top 25 shareholders own 68.79% of the company

Ownership	Name	Shares	Current Value	Change %	Portfolio %
16%	The Vanguard Group, Inc.	65,754,320	€4.5b	0.21%	0.07%
9.49%	BlackRock, Inc.	38,885,893	€2.7b	0.84%	0.04%
4.74%	Principal Global Investors, LLC	19,415,535	€1.3b	0.08%	0.66%
4.58%	Baron Capital Group, Inc.	18,785,436	€1.3b	-2.52%	3.03%
4.16%	State Street Global Advisors, Inc.	17,059,744	€1.2b	4.42%	0.04%
3.09%	Capital Research and Management Company	12,663,866	€867.1m	90.5%	0.04%
2.78%	Massachusetts Financial Services Company	11,380,192	€779.2m	-0.04%	0.17%
2.76%	Geode Capital Management, LLC	11,308,986	€774.3m	2.14%	0.06%
2.18%	Akre Capital Management, LLC	8,934,093	€611.7m	1.87%	4.45%
2.15%	Baillie Gifford & Co.	8,799,131	€602.5m	-2.79%	0.27%
1.85%	Macquarie Investment Management Business Trust	7,590,879	€519.7m	-9.8%	0.62%
1.62%	Janus Henderson Group plc	6,627,229	€453.8m	-45.3%	0.19%
1.57%	T. Rowe Price Group, Inc.	6,419,963	€439.6m	25%	0.04%
1.44%	BNY Asset Management	5,921,969	€405.5m	-2.11%	0.08%
1.37%	Artisan Partners Limited Partnership	5,635,481	€385.8m	-2.91%	0.31%
1.24%	Norges Bank Investment Management	5,096,624	€349.0m	0%	0.03%
1.21%	William Blair Investment Management, LLC	4,946,765	€338.7m	-9.25%	0.42%
1.08%	Vulcan Value Partners, LLC	4,429,889	€303.3m	7.03%	4.04%
0.92%	Brown Advisory Incorporated	3,765,285	€257.8m	-3.43%	0.31%
0.8%	Northern Trust Global Investments	3,295,603	€225.6m	-6.56%	0.03%
0.78%	Managed Account Advisors LLC	3,215,764	€220.2m	-12.8%	0.05%
0.78%	Invesco Capital Management LLC	3,188,591	€218.3m	9.68%	0.09%
0.77%	UBS Asset Management AG	3,161,140	€216.4m	10.2%	0.02%
0.71%	Legal & General Investment Management Limited	2,914,298	€199.5m	2.15%	0.04%
0.68%	Mackenzie Financial Corporation	2,807,019	€192.2m	19%	0.21%

Company Analysis and Financial Data Status

Data	Last Updated (UTC time)
Company Analysis	2024/12/22 08:29
End of Day Share Price	2024/12/20 00:00
Earnings	2024/09/30
Annual Earnings	2023/12/31

Data Sources

The data used in our company analysis is from S&P Global Market Intelligence LLC. The following data is used in our analysis model to generate this report. Data is normalised which can introduce a delay from the source being available.

Package	Data	Timeframe	Example US Source ^*
Company Financials	10 years	Income statement Cash flow statement Balance sheet	SEC Form 10-K SEC Form 10-Q
Analyst Consensus Estimates	+3 years	Forecast financials Analyst price targets	Analyst Research Reports Blue Matrix
Market Prices	30 years	Stock prices Dividends, Splits and Actions	ICE Market Data SEC Form S-1
Ownership	10 years	Top shareholders Insider trading	SEC Form 4 SEC Form 13D
Management	10 years	Leadership team Board of directors	SEC Form 10-K SEC Form DEF 14A
Key Developments	10 years	Company announcements	SEC Form 8-K

^* example for US securities, for non-US equivalent regulatory forms and sources are used.

Unless specified all financial data is based on a yearly period but updated quarterly. This is known as Trailing Twelve Month (TTM) or Last Twelve Month (LTM) Data. Learn more here.

Analysis Model and Snowflake

Details of the analysis model used to generate this report is available on our Github page, we also have guides on how to use our reports and tutorials on Youtube.

Learn about the world class team who designed and built the Simply Wall St analysis model.

Industry and Sector Metrics

Our industry and section metrics are calculated every 6 hours by Simply Wall St, details of our process are available on .

Analyst Sources

CoStar Group, Inc. is covered by 28 analysts. 14 of those analysts submitted the estimates of revenue or earnings used as inputs to our report. Analysts submissions are updated throughout the day.

Analyst	Institution
Jeffrey Meuler	Baird
Jeffrey Silber	BMO Capital Markets Equity Research
Heather Balsky	BofA Global Research