Public companies who have a significant stake must be disappointed along with institutions after IONOS Group SE’s (ETR:IOS) market cap dropped by €359m

Simply Wall St

Wed, February 11, 2026 at 1:00 PM GMT+9 4 min read

In this article:

IOSDF

-0.86%

UDIRF

-28.66%

Key Insights

IONOS Group's significant public companies ownership suggests that the key decisions are influenced by shareholders from the larger public

The largest shareholder of the company is United Internet AG with a 65% stake

 21% of IONOS Group is held by Institutions

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If you want to know who really controls IONOS Group SE (ETR:IOS), then you’ll have to look at the makeup of its share registry. With 65% stake, public companies possess the maximum shares in the company. In other words, the group stands to gain the most (or lose the most) from their investment into the company.

Following a 9.8% decrease in the stock price last week, public companies suffered the most losses, but institutions who own 21% stock also took a hit.

Let’s delve deeper into each type of owner of IONOS Group, beginning with the chart below.

See our latest analysis for IONOS Group

XTRA:IOS Ownership Breakdown February 11th 2026

What Does The Institutional Ownership Tell Us About IONOS Group?

Institutions typically measure themselves against a benchmark when reporting to their own investors, so they often become more enthusiastic about a stock once it’s included in a major index. We would expect most companies to have some institutions on the register, especially if they are growing.

We can see that IONOS Group does have institutional investors; and they hold a good portion of the company’s stock. This can indicate that the company has a certain degree of credibility in the investment community. However, it is best to be wary of relying on the supposed validation that comes with institutional investors. They too, get it wrong sometimes. If multiple institutions change their view on a stock at the same time, you could see the share price drop fast. It’s therefore worth looking at IONOS Group’s earnings history below. Of course, the future is what really matters.

XTRA:IOS Earnings and Revenue Growth February 11th 2026

IONOS Group is not owned by hedge funds. Looking at our data, we can see that the largest shareholder is United Internet AG with 65% of shares outstanding. This essentially means that they have extensive influence, if not outright control, over the future of the corporation. In comparison, the second and third largest shareholders hold about 4.0% and 2.4% of the stock.

While it makes sense to study institutional ownership data for a company, it also makes sense to study analyst sentiments to know which way the wind is blowing. There are a reasonable number of analysts covering the stock, so it might be useful to find out their aggregate view on the future.

Story continues  

Insider Ownership Of IONOS Group

The definition of an insider can differ slightly between different countries, but members of the board of directors always count. Management ultimately answers to the board. However, it is not uncommon for managers to be executive board members, especially if they are a founder or the CEO.

I generally consider insider ownership to be a good thing. However, on some occasions it makes it more difficult for other shareholders to hold the board accountable for decisions.

We note our data does not show any board members holding shares, personally. Not all jurisdictions have the same rules around disclosing insider ownership, and it is possible we have missed something, here. So you can click here learn more about the CEO.

General Public Ownership

The general public, who are usually individual investors, hold a 14% stake in IONOS Group. While this size of ownership may not be enough to sway a policy decision in their favour, they can still make a collective impact on company policies.

Public Company Ownership

It appears to us that public companies own 65% of IONOS Group. This may be a strategic interest and the two companies may have related business interests. It could be that they have de-merged. This holding is probably worth investigating further.

Next Steps:

I find it very interesting to look at who exactly owns a company. But to truly gain insight, we need to consider other information, too. For instance, we’ve identified ** 1 warning sign for IONOS Group** that you should be aware of.

But ultimately ** it is the future**, not the past, that will determine how well the owners of this business will do. Therefore we think it advisable to take a look at this free report showing whether analysts are predicting a brighter future.

NB: Figures in this article are calculated using data from the last twelve months, which refer to the 12-month period ending on the last date of the month the financial statement is dated. This may not be consistent with full year annual report figures.

Have feedback on this article? Concerned about the content? Get in touch** with us directly.**_ Alternatively, email editorial-team (at) simplywallst.com._

This article by Simply Wall St is general in nature. We provide commentary based on historical data and analyst forecasts only using an unbiased methodology and our articles are not intended to be financial advice. It does not constitute a recommendation to buy or sell any stock, and does not take account of your objectives, or your financial situation. We aim to bring you long-term focused analysis driven by fundamental data. Note that our analysis may not factor in the latest price-sensitive company announcements or qualitative material. Simply Wall St has no position in any stocks mentioned.

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