Stock Analysis

Private equity firms among DiaSorin S.p.A.'s (BIT:DIA) largest shareholders, saw gain in holdings value after stock jumped 3.8% last week

Advertisement

Key Insights

  • DiaSorin's significant private equity firms ownership suggests that the key decisions are influenced by shareholders from the larger public
  • 50% of the business is held by the top 2 shareholders
  • 20% of DiaSorin is held by Institutions

Every investor in DiaSorin S.p.A. (BIT:DIA) should be aware of the most powerful shareholder groups. We can see that private equity firms own the lion's share in the company with 46% ownership. In other words, the group stands to gain the most (or lose the most) from their investment into the company.

As a result, private equity firms were the biggest beneficiaries of last week’s 3.8% gain.

In the chart below, we zoom in on the different ownership groups of DiaSorin.

View our latest analysis for DiaSorin

ownership-breakdown
BIT:DIA Ownership Breakdown November 30th 2025

What Does The Institutional Ownership Tell Us About DiaSorin?

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.

As you can see, institutional investors have a fair amount of stake in DiaSorin. This suggests some credibility amongst professional investors. But we can't rely on that fact alone since institutions make bad investments sometimes, just like everyone does. When multiple institutions own a stock, there's always a risk that they are in a 'crowded trade'. When such a trade goes wrong, multiple parties may compete to sell stock fast. This risk is higher in a company without a history of growth. You can see DiaSorin's historic earnings and revenue below, but keep in mind there's always more to the story.

earnings-and-revenue-growth
BIT:DIA Earnings and Revenue Growth November 30th 2025

We note that hedge funds don't have a meaningful investment in DiaSorin. Investimenti e Partecipazioni Spa is currently the largest shareholder, with 46% of shares outstanding. With 4.5% and 4.3% of the shares outstanding respectively, Carlo Rosa and M.C. S.R.L. are the second and third largest shareholders. Carlo Rosa, who is the second-largest shareholder, also happens to hold the title of Chief Executive Officer.

To make our study more interesting, we found that the top 2 shareholders have a majority ownership in the company, meaning that they are powerful enough to influence the decisions of the company.

While studying institutional ownership for a company can add value to your research, it is also a good practice to research analyst recommendations to get a deeper understand of a stock's expected performance. Quite a few analysts cover the stock, so you could look into forecast growth quite easily.

Insider Ownership Of DiaSorin

While the precise definition of an insider can be subjective, almost everyone considers board members to be insiders. Company management run the business, but the CEO will answer to the board, even if he or she is a member of it.

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 can report that insiders do own shares in DiaSorin S.p.A.. It is a pretty big company, so it is generally a positive to see some potentially meaningful alignment. In this case, they own around €155m worth of shares (at current prices). Most would say this shows alignment of interests between shareholders and the board. Still, it might be worth checking if those insiders have been selling.

General Public Ownership

The general public, who are usually individual investors, hold a 21% stake in DiaSorin. While this group can't necessarily call the shots, it can certainly have a real influence on how the company is run.

Private Equity Ownership

With a stake of 46%, private equity firms could influence the DiaSorin board. Some investors might be encouraged by this, since private equity are sometimes able to encourage strategies that help the market see the value in the company. Alternatively, those holders might be exiting the investment after taking it public.

Private Company Ownership

We can see that Private Companies own 9.4%, of the shares on issue. It's hard to draw any conclusions from this fact alone, so its worth looking into who owns those private companies. Sometimes insiders or other related parties have an interest in shares in a public company through a separate private company.

Next Steps:

It's always worth thinking about the different groups who own shares in a company. But to understand DiaSorin better, we need to consider many other factors. Case in point: We've spotted 1 warning sign for DiaSorin 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.

New: Manage All Your Stock Portfolios in One Place

We've created the ultimate portfolio companion for stock investors, and it's free.

• Connect an unlimited number of Portfolios and see your total in one currency
• Be alerted to new Warning Signs or Risks via email or mobile
• Track the Fair Value of your stocks

Try a Demo Portfolio for Free

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.

About BIT:DIA

DiaSorin

Engages in research and development, manufacture, and distribution of immunodiagnostics and molecular diagnostics testing kits in Europe, North America, and internationally.

Undervalued established dividend payer.

Advertisement

Updated Narratives

CE
CEG logo
cementafriend on Constellation Energy ·

Constellation Energy Dividends and Growth

Fair Value:US$348.054.7% overvalued
1 users have followed this narrative
0 users have commented on this narrative
0 users have liked this narrative
KH
CRWV logo
Khagani on CoreWeave ·

CoreWeave's Revenue Expected to Rocket 77.88% in 5-Year Forecast

Fair Value:US$11033.5% undervalued
1 users have followed this narrative
0 users have commented on this narrative
0 users have liked this narrative
PO
BIS logo
PortfolioPlus on Bisalloy Steel Group ·

Bisalloy Steel Group will shine with a projected profit margin increase of 12.8%

Fair Value:AU$6.7118.0% undervalued
2 users have followed this narrative
0 users have commented on this narrative
0 users have liked this narrative

Popular Narratives

TH
TheWallstreetKing
MVIS logo
TheWallstreetKing on MicroVision ·

MicroVision will explode future revenue by 380.37% with a vision towards success

Fair Value:US$6098.4% undervalued
101 users have followed this narrative
10 users have commented on this narrative
20 users have liked this narrative
AN
AnalystConsensusTarget
NVDA logo
AnalystConsensusTarget on NVIDIA ·

NVDA: Expanding AI Demand Will Drive Major Data Center Investments Through 2026

Fair Value:US$250.3929.3% undervalued
934 users have followed this narrative
6 users have commented on this narrative
23 users have liked this narrative
OS
oscargarcia
GOOGL logo
oscargarcia on Alphabet ·

The company that turned a verb into a global necessity and basically runs the modern internet, digital ads, smartphones, maps, and AI.

Fair Value:US$3405.8% undervalued
140 users have followed this narrative
6 users have commented on this narrative
18 users have liked this narrative