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Sumco Corporation (TSE:3436) is favoured by institutional owners who hold 61% of the company

Simply Wall St · 3d ago

Key Insights

  • Significantly high institutional ownership implies Sumco's stock price is sensitive to their trading actions
  • A total of 13 investors have a majority stake in the company with 51% ownership
  • Analyst forecasts along with ownership data serve to give a strong idea about prospects for a business

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If you want to know who really controls Sumco Corporation (TSE:3436), then you'll have to look at the makeup of its share registry. We can see that institutions own the lion's share in the company with 61% ownership. In other words, the group stands to gain the most (or lose the most) from their investment into the company.

Given the vast amount of money and research capacities at their disposal, institutional ownership tends to carry a lot of weight, especially with individual investors. Therefore, a good portion of institutional money invested in the company is usually a huge vote of confidence on its future.

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

Check out our latest analysis for Sumco

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TSE:3436 Ownership Breakdown January 5th 2026

What Does The Institutional Ownership Tell Us About Sumco?

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.

We can see that Sumco 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. It is not uncommon to see a big share price drop if two large institutional investors try to sell out of a stock at the same time. So it is worth checking the past earnings trajectory of Sumco, (below). Of course, keep in mind that there are other factors to consider, too.

earnings-and-revenue-growth
TSE:3436 Earnings and Revenue Growth January 5th 2026

Since institutional investors own more than half the issued stock, the board will likely have to pay attention to their preferences. We note that hedge funds don't have a meaningful investment in Sumco. Eastspring Investments (Singapore) Limited is currently the largest shareholder, with 6.4% of shares outstanding. The second and third largest shareholders are Nomura Asset Management Co., Ltd. and FMR LLC, with an equal amount of shares to their name at 5.2%.

A closer look at our ownership figures suggests that the top 13 shareholders have a combined ownership of 51% implying that no single shareholder has a majority.

Researching institutional ownership is a good way to gauge and filter a stock's expected performance. The same can be achieved by studying analyst sentiments. There are plenty of analysts covering the stock, so it might be worth seeing what they are forecasting, too.

Insider Ownership Of Sumco

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.

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.

Our data suggests that insiders own under 1% of Sumco Corporation in their own names. Keep in mind that it's a big company, and the insiders own JP¥145m worth of shares. The absolute value might be more important than the proportional share. Arguably, recent buying and selling is just as important to consider. You can click here to see if insiders have been buying or selling.

General Public Ownership

With a 39% ownership, the general public, mostly comprising of individual investors, have some degree of sway over Sumco. 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.

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 example, we've discovered 3 warning signs for Sumco (1 is significant!) that you should be aware of before investing here.

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.