IONOS Group Ownership

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

Recent Insider Transactions

Insider Trading Volume

Insider Buying: Insufficient data to determine if insiders have bought more shares than they have sold in the past 3 months.

Ownership Breakdown

What is the ownership structure of IOS?
Owner Type	Number of Shares	Ownership Percentage
General Public	24,151,381	17.4%
Institutions	24,979,522	18%
Public Companies	89,369,097	64.5%

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

Top Shareholders

Top 25 shareholders own 81.15% of the company

Ownership	Name	Shares	Current Value	Change %	Portfolio %
64.5%	United Internet AG	89,369,097	€3.1b	0%	no data
2.87%	Helikon Investments Limited	3,975,740	€136.0m	-8.41%	2.94%
2.39%	DWS Group GmbH & Co. KGaA	3,316,904	€113.4m	-15.9%	61.52%
1.49%	Norges Bank Investment Management	2,058,382	€70.4m	130%	0.01%
1.45%	The Vanguard Group, Inc.	2,011,272	€68.8m	1.23%	no data
1.35%	Deutsche Asset & Wealth Management	1,876,063	€64.2m	-2.53%	0.02%
1.27%	Deka Investment GmbH	1,760,453	€60.2m	11.2%	0.05%
0.78%	BlackRock, Inc.	1,085,216	€37.1m	6.23%	no data
0.67%	Janus Henderson Group plc	934,245	€32.0m	0%	0.01%
0.65%	Gané Advisory GmbH	905,000	€31.0m	0%	4.41%
0.58%	Union Asset Management Holding AG	800,000	€27.4m	0%	0.02%
0.43%	T. Rowe Price Group, Inc.	600,371	€20.5m	7.09%	no data
0.43%	JP Morgan Asset Management	594,402	€20.3m	0%	no data
0.4%	Wellington Management Group LLP	553,577	€18.9m	1.64%	no data
0.37%	Lupus Alpha Asset Management GmbH	513,000	€17.5m	0%	1.51%
0.31%	DNCA Finance	434,209	€14.9m	0%	0.12%
0.23%	GANÉ Investment-AG mit Teilgesellschaftsvermögen	320,000	€10.9m	0%	3.73%
0.17%	Goldman Sachs Asset Management, L.P.	232,282	€7.9m	99.4%	no data
0.15%	VM Vermogens-Management GmbH	203,035	€6.9m	0%	2.16%
0.14%	Shareholder Value Management Aktiengesellschaft	200,000	€6.8m	0%	1.12%
0.11%	Groupama Asset Management SA	155,266	€5.3m	0%	0.06%
0.092%	Lazard Asset Management LLC	127,303	€4.4m	-1.25%	no data
0.092%	Oberweis Asset Management, Inc.	126,800	€4.3m	0%	0.16%
0.091%	Charles Schwab Investment Management, Inc.	125,486	€4.3m	-6.43%	no data
0.081%	Amundi Asset Management SAS	112,249	€3.8m	0%	no data

Company Analysis and Financial Data Status

Data	Last Updated (UTC time)
Company Analysis	2025/10/05 21:51
End of Day Share Price	2025/10/03 00:00
Earnings	2025/06/30
Annual Earnings	2024/12/31

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.

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 Github.

Analyst Sources

IONOS Group SE is covered by 17 analysts. 10 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
Emily Johnson	Barclays
Sarah Roberts	Barclays
Andrew Ross	Barclays