Stock Analysis

Public companies invested in SD Biosensor, Inc (KRX:137310) up 6.0% last week, insiders too were rewarded

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Key Insights

  • Significant control over SD Biosensor by public companies implies that the general public has more power to influence management and governance-related decisions
  • A total of 2 investors have a majority stake in the company with 65% ownership
  • 32% of SD Biosensor is held by insiders

To get a sense of who is truly in control of SD Biosensor, Inc (KRX:137310), it is important to understand the ownership structure of the business. We can see that public companies own the lion's share in the company with 38% ownership. That is, the group stands to benefit the most if the stock rises (or lose the most if there is a downturn).

While public companies were the group that benefitted the most from last week’s ₩73b market cap gain, insiders too had a 32% share in those profits.

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

View our latest analysis for SD Biosensor

ownership-breakdown
KOSE:A137310 Ownership Breakdown September 23rd 2025

What Does The Institutional Ownership Tell Us About SD Biosensor?

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.

Since institutions own only a small portion of SD Biosensor, many may not have spent much time considering the stock. But it's clear that some have; and they liked it enough to buy in. So if the company itself can improve over time, we may well see more institutional buyers in the future. When multiple institutional investors want to buy shares, we often see a rising share price. The past revenue trajectory (shown below) can be an indication of future growth, but there are no guarantees.

earnings-and-revenue-growth
KOSE:A137310 Earnings and Revenue Growth September 23rd 2025

SD Biosensor is not owned by hedge funds. Looking at our data, we can see that the largest shareholder is BioNote, Inc. with 38% of shares outstanding. Young-Shik Cho is the second largest shareholder owning 27% of common stock, and Hyo-Gun Lee holds about 3.5% of the company stock.

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. There is a little analyst coverage of the stock, but not much. So there is room for it to gain more coverage.

Insider Ownership Of SD Biosensor

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. Company management run the business, but the CEO will answer to the board, even if he or she is a member of it.

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.

It seems insiders own a significant proportion of SD Biosensor, Inc. Insiders own ₩415b worth of shares in the ₩1.3t 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

With a 24% ownership, the general public, mostly comprising of individual investors, have some degree of sway over SD Biosensor. While this group can't necessarily call the shots, it can certainly have a real influence on how the company is run.

Public Company Ownership

Public companies currently own 38% of SD Biosensor stock. 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:

It's always worth thinking about the different groups who own shares in a company. But to understand SD Biosensor better, we need to consider many other factors. To that end, you should learn about the 3 warning signs we've spotted with SD Biosensor (including 1 which can't be ignored) .

If you are like me, you may want to think about whether this company will grow or shrink. Luckily, you can check this free report showing analyst forecasts for its 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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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.