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
Hedge Funds	7,000,000	5.1%
General Public	17,586,317	12.8%
Institutions	23,285,559	17%
Public Companies	89,320,000	65.1%

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

Top Shareholders

Top 25 shareholders own 85.9% of the company

Ownership	Name	Shares	Current Value	Change %	Portfolio %
65.1%	United Internet AG	89,320,000	CHF 2.4b	0%	no data
5.1%	Helikon Investments Limited	7,000,000	CHF 184.3m	0%	3.37%
3.06%	Wellington Management Group LLP	4,200,428	CHF 110.6m	129%	0.02%
2.42%	DWS Group GmbH & Co. KGaA	3,316,904	CHF 87.3m	0%	55.14%
1.96%	Deka Investment GmbH	2,684,769	CHF 70.7m	0%	0.06%
1.13%	Vanguard Capital Management, LLC	1,551,140	CHF 40.8m	-0.03%	no data
0.83%	BlackRock, Inc.	1,136,374	CHF 29.9m	2.01%	no data
0.78%	Janus Henderson Group plc	1,069,445	CHF 28.2m	0%	0.01%
0.68%	Gané Advisory GmbH	930,000	CHF 24.5m	0%	3.62%
0.58%	Union Asset Management Holding AG	800,000	CHF 21.1m	0%	0.01%
0.54%	T. Rowe Price Group, Inc.	735,805	CHF 19.4m	24.1%	no data
0.46%	Norges Bank Investment Management	632,291	CHF 16.6m	0%	no data
0.43%	Schroder Investment Management Limited	590,539	CHF 15.6m	2.23%	0.01%
0.38%	DNCA Finance	527,679	CHF 13.9m	0%	0.16%
0.38%	Dimensional Fund Advisors LP	523,148	CHF 13.8m	5%	no data
0.38%	Columbia Management Investment Advisers, LLC	515,192	CHF 13.6m	-1.89%	no data
0.32%	Vanguard Fiduciary Trust Company	433,217	CHF 11.4m	0.85%	no data
0.27%	GANÉ Investment-AG mit Teilgesellschaftsvermögen	375,000	CHF 9.9m	0%	3.53%
0.26%	Invesco Capital Management LLC	362,238	CHF 9.5m	0%	no data
0.2%	Deutsche Asset & Wealth Management	275,649	CHF 7.3m	16.9%	no data
0.15%	VM Vermogens-Management GmbH	203,035	CHF 5.3m	0%	2.17%
0.15%	Shareholder Value Management AG	200,000	CHF 5.3m	0%	0.95%
0.11%	J.Chahine Advisory SA	156,091	CHF 4.1m	0%	0.9%
0.11%	Lazard Asset Management LLC	155,721	CHF 4.1m	12.1%	no data
0.11%	Amundi Asset Management SAS	149,697	CHF 3.9m	199%	no data

Company Analysis and Financial Data Status

Data	Last Updated (UTC time)
Company Analysis	2026/07/05 16:17
End of Day Share Price	2026/07/03 00:00
Earnings	2026/03/31
Annual Earnings	2025/12/31

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 16 analysts. 9 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