Stock Analysis

The recent 10% gain must have brightened CEO Hirofumi Iwasaki's week, Mammy Mart Holdings Corporation's (TSE:9823) most bullish insider

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Key Insights

  • Mammy Mart Holdings' significant insider ownership suggests inherent interests in company's expansion
  • 58% of the business is held by the top 2 shareholders
  • Ownership research, combined with past performance data can help provide a good understanding of opportunities in a stock

If you want to know who really controls Mammy Mart Holdings Corporation (TSE:9823), then you'll have to look at the makeup of its share registry. With 39% stake, individual insiders possess the maximum shares in the company. That is, the group stands to benefit the most if the stock rises (or lose the most if there is a downturn).

As a result, insiders were the biggest beneficiaries of last week’s 10% gain.

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

View our latest analysis for Mammy Mart Holdings

ownership-breakdown
TSE:9823 Ownership Breakdown October 8th 2025

What Does The Institutional Ownership Tell Us About Mammy Mart Holdings?

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 Mammy Mart Holdings does have institutional investors; and they hold a good portion of the company's stock. 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 Mammy Mart Holdings' historic earnings and revenue below, but keep in mind there's always more to the story.

earnings-and-revenue-growth
TSE:9823 Earnings and Revenue Growth October 8th 2025

We note that hedge funds don't have a meaningful investment in Mammy Mart Holdings. With a 37% stake, CEO Hirofumi Iwasaki is the largest shareholder. For context, the second largest shareholder holds about 22% of the shares outstanding, followed by an ownership of 8.3% by the third-largest shareholder.

After doing some more digging, we found that the top 2 shareholders collectively control more than half of the company's shares, implying that they have considerable power to influence the company's decisions.

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. We're not picking up on any analyst coverage of the stock at the moment, so the company is unlikely to be widely held.

Insider Ownership Of Mammy Mart Holdings

The definition of an insider can differ slightly between different countries, but members of the board of directors always count. 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.

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.

Our most recent data indicates that insiders own a reasonable proportion of Mammy Mart Holdings Corporation. Insiders own JP¥28b worth of shares in the JP¥73b company. It is great to see insiders so invested in the business. It might be worth checking if those insiders have been buying recently.

General Public Ownership

The general public, who are usually individual investors, hold a 20% stake in Mammy Mart Holdings. 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.

Private Company Ownership

Our data indicates that Private Companies hold 3.8%, of the company's shares. It might be worth looking deeper into this. If related parties, such as insiders, have an interest in one of these private companies, that should be disclosed in the annual report. Private companies may also have a strategic interest in the company.

Public Company Ownership

We can see that public companies hold 22% of the Mammy Mart Holdings shares on issue. It's hard to say for sure but this suggests they have entwined business interests. This might be a strategic stake, so it's worth watching this space for changes in ownership.

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.

I like to dive deeper into how a company has performed in the past. You can find historic revenue and earnings in this detailed graph.

Of course this may not be the best stock to buy. So take a peek at this free free list of interesting companies.

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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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.