Stock Analysis

ATCO Ltd.'s (TSE:ACO.X) market cap touched CA$6.2b last week, benefiting both individual investors who own 50% as well as institutions

Key Insights

  • The considerable ownership by individual investors in ATCO indicates that they collectively have a greater say in management and business strategy
  • 48% of the business is held by the top 25 shareholders
  • Recent purchases by insiders

To get a sense of who is truly in control of ATCO Ltd. (TSE:ACO.X), it is important to understand the ownership structure of the business. The group holding the most number of shares in the company, around 50% to be precise, is individual investors. Put another way, the group faces the maximum upside potential (or downside risk).

Individual investors gained the most after market cap touched CA$6.2b last week, while institutions who own 24% also benefitted.

Let's delve deeper into each type of owner of ATCO, beginning with the chart below.

Check out our latest analysis for ATCO

ownership-breakdown
TSX:ACO.X Ownership Breakdown December 21st 2025

What Does The Institutional Ownership Tell Us About ATCO?

Institutional investors commonly compare their own returns to the returns of a commonly followed index. So they generally do consider buying larger companies that are included in the relevant benchmark index.

We can see that ATCO 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 ATCO's earnings history below. Of course, the future is what really matters.

earnings-and-revenue-growth
TSX:ACO.X Earnings and Revenue Growth December 21st 2025

We note that hedge funds don't have a meaningful investment in ATCO. Our data shows that Sentgraf Enterprises Ltd. is the largest shareholder with 24% of shares outstanding. With 7.0% and 2.8% of the shares outstanding respectively, RBC Global Asset Management Inc. and The Vanguard Group, Inc. are the second and third largest shareholders.

On studying our ownership data, we found that 25 of the top shareholders collectively own less than 50% of the share register, implying that no single individual has a majority interest.

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. Quite a few analysts cover the stock, so you could look into forecast growth quite easily.

Insider Ownership Of ATCO

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. 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.

Insider ownership is positive when it signals leadership are thinking like the true owners of the company. However, high insider ownership can also give immense power to a small group within the company. This can be negative in some circumstances.

Shareholders would probably be interested to learn that insiders own shares in ATCO Ltd.. It is a pretty big company, so it is generally a positive to see some potentially meaningful alignment. In this case, they own around CA$86m worth of shares (at current prices). If you would like to explore the question of insider alignment, you can click here to see if insiders have been buying or selling.

General Public Ownership

The general public, who are usually individual investors, hold a substantial 50% stake in ATCO, suggesting it is a fairly popular stock. This size of ownership gives investors from the general public some collective power. They can and probably do influence decisions on executive compensation, dividend policies and proposed business acquisitions.

Private Company Ownership

We can see that Private Companies own 24%, of the shares on issue. Private companies may be related parties. Sometimes insiders have an interest in a public company through a holding in a private company, rather than in their own capacity as an individual. While it's hard to draw any broad stroke conclusions, it is worth noting as an area for further research.

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. Case in point: We've spotted 1 warning sign for ATCO 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.

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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 TSX:ACO.X

ATCO

Engages in the energy, logistics and transportation, shelter, and real estate services in Canada, Australia, and internationally.

Undervalued established dividend payer.

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