Stock Analysis

Individual investors in Nanobiotix S.A. (EPA:NANO) are its biggest bettors, and their bets paid off as stock gained 23% last week

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Key Insights

  • Nanobiotix's significant individual investors ownership suggests that the key decisions are influenced by shareholders from the larger public
  • A total of 5 investors have a majority stake in the company with 52% ownership
  • Analyst forecasts along with ownership data serve to give a strong idea about prospects for a business

To get a sense of who is truly in control of Nanobiotix S.A. (EPA:NANO), it is important to understand the ownership structure of the business. With 46% stake, individual investors possess the maximum shares in the company. Put another way, the group faces the maximum upside potential (or downside risk).

As a result, individual investors were the biggest beneficiaries of last week’s 23% gain.

Let's take a closer look to see what the different types of shareholders can tell us about Nanobiotix.

See our latest analysis for Nanobiotix

ownership-breakdown
ENXTPA:NANO Ownership Breakdown September 22nd 2025

What Does The Institutional Ownership Tell Us About Nanobiotix?

Many institutions measure their performance against an index that approximates the local market. So they usually pay more attention to companies that are included in major indices.

Nanobiotix already has institutions on the share registry. Indeed, they own a respectable stake in the company. This implies the analysts working for those institutions have looked at the stock and they like it. But just like anyone else, they could be wrong. 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 Nanobiotix's historic earnings and revenue below, but keep in mind there's always more to the story.

earnings-and-revenue-growth
ENXTPA:NANO Earnings and Revenue Growth September 22nd 2025

Hedge funds don't have many shares in Nanobiotix. Looking at our data, we can see that the largest shareholder is Johnson & Johnson Innovation - JJDC, Inc. with 23% of shares outstanding. Artal Group S.A. is the second largest shareholder owning 12% of common stock, and Qatar Investment Authority holds about 8.9% of the company stock. Furthermore, CEO Laurent Levy is the owner of 2.7% of the company's shares.

On looking further, we found that 52% of the shares are owned by the top 5 shareholders. In other words, these shareholders have a meaningful say in the decisions of the company.

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.

Insider Ownership Of Nanobiotix

The definition of company insiders can be subjective and does vary between jurisdictions. Our data reflects individual insiders, capturing board members at the very least. The company management answer to the board and the latter should represent the interests of shareholders. Notably, sometimes top-level managers are on the board themselves.

Most consider insider ownership a positive because it can indicate the board is well aligned with other shareholders. However, on some occasions too much power is concentrated within this group.

We can report that insiders do own shares in Nanobiotix S.A.. As individuals, the insiders collectively own €16m worth of the €471m company. Some would say this shows alignment of interests between shareholders and the board. But it might be worth checking if those insiders have been selling.

General Public Ownership

The general public, who are usually individual investors, hold a 46% stake in Nanobiotix. 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 an ownership of 35%, private equity firms are in a position to play a role in shaping corporate strategy with a focus on value creation. 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.

Next Steps:

It's always worth thinking about the different groups who own shares in a company. But to understand Nanobiotix better, we need to consider many other factors. Be aware that Nanobiotix is showing 4 warning signs in our investment analysis , and 3 of those don't sit too well with us...

Ultimately the future is most important. You can access this free report on analyst forecasts for the company.

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.

Valuation is complex, but we're here to simplify it.

Discover if Nanobiotix might be undervalued or overvalued with our detailed analysis, featuring fair value estimates, potential risks, dividends, insider trades, and its financial condition.

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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.