[Summary]
In May 2026, it was reported that Ken-O Co., Ltd., a construction company in Nakano-ku, Tokyo, and its affiliated companies had received a decision to begin bankruptcy proceedings.
The important point is that Ken-O Co., Ltd. is not a listed company. Therefore, there are no stock prices that are traded on the stock market, and they are not subject to direct analysis as ``stock price predictions for 2026'' or ``stocks that will rise in the future.''
However, this bankruptcy is not just the failure of a single company. This is an example of the high costs, price pass-through, labor shortages, and financing risks that face the infrastructure construction industry, including public works, water supply, civil engineering, and pavement.
In this article, we will summarize important points from Ken-O's bankruptcy when looking at construction and infrastructure-related stocks from 2026 onwards.
First, the conclusion
Ken-O Co., Ltd. is an unlisted company and has no stock price.
Therefore, what investors should be looking at is not whether ``Central Stocks will go up or down.''
What you should look at is the following question.
riseIn the construction industry, demand for infrastructure remains. Renewal of aging water pipes, roads, bridges, sewers, and disaster prevention infrastructure is a long-term theme.
However, there is a difference between there being a demand and a company being able to make a profit.
For construction-related stocks after 2026, operating profit margin, selective order acceptance, price pass-through ability, and financial strength will become more important than mere order volume.
Bankruptcy overview of Ken-O Co., Ltd.
According to reports, Ken-O Co., Ltd. and its affiliated companies, Daiko Co., Ltd. and Zen Co., Ltd., received a decision from the Tokyo District Court to begin bankruptcy proceedings on May 13, 2026.
The total debt of the three companies is said to be approximately 4.7 billion yen.
| Item | Contents |
|---|---|
| Company name | Keno Co., Ltd. |
| Location | Higashinakano, Nakano-ku, Tokyo |
| Established | August 2005 |
| Main business | Water supply distribution small pipe replacement work for government offices, civil engineering and paving work |
| Decision to commence bankruptcy | May 13, 2026 |
| Affiliated companies | Daiko Co., Ltd., Zen Co., Ltd. |
| Total debt | Approximately 4.7 billion yen for the three companies |
Ken-O is reported to have increased its orders mainly for construction ordered by the Tokyo metropolitan area, and had annual sales of approximately 2.48 billion yen in the fiscal year ending May 2021. It was a construction company for government offices with a certain level of sales.
Nevertheless, the important part of this news is that it led to bankruptcy.
Why do even government projects fail?
Construction work for government offices generally appears to be a stable job.
However, in the current construction industry, even public works cannot always be said to be safe.
The biggest reason is that if costs rise after an order is received, profits will be cut quickly.
There are many factors that put pressure on construction companies' profitability.
- Rising material prices
- Increase in raw material prices
- Increase in fuel and logistics costs
- Shortage of craftsmen
- Increase in outsourcing costs
- Extension of construction period
- Delay in collection of accounts receivable
Because the planned price and contract conditions for public works projects are fixed, it is not always possible to pass on all increases in costs after an order is received.
In other words, even if there are sales, there is no profit left.
The risk of receiving orders in the red or with low profitability has become a major problem in the construction industry.
Three risks posed by Ken-O’s bankruptcy
1. Safety cannot be determined based on sales volume alone
Ken-O is said to have posted annual sales of approximately 2.48 billion yen in the fiscal year ending May 2021.
Even so, the combination of high material costs, extended construction periods, worsening cash flow, and credit concerns will make it difficult to continue business.
When looking at a construction company, you need to look at operating profit margin and cash flow rather than sales.
2. Price pass-through is important even in government projects
While orders for public construction work are stable, mismanagement of profit margins can reduce profits.
Even if there is a large backlog of orders, if there are many low-profit projects, it will be difficult for the company to be evaluated in the stock market.
Investors want to check not only whether there is a backlog of orders, but also whether they are selecting profitable projects.
3. Labor shortages and construction delays put pressure on cash flow
The construction industry has become increasingly aware of labor shortages and rising labor costs since the 2024 problem.
If the construction period is extended, collection of accounts receivable will be delayed and outsourcing and material costs will likely be paid in advance.
The problem of profit turns into a problem of cash flow.
This structure tends to be heavier for small and medium-sized construction companies.
Points to look at construction-related stocks in 2026
When looking at construction, civil engineering, and infrastructure-related stocks, the following five points are important from 2026 onwards.
| Indicators to watch | Reasons |
|---|---|
| Operating profit margin | Results of price transfer and profit management |
| Profitability at the time of order | Understand whether you are avoiding low-profitability projects |
| Cash flow | Look at tolerance to extension of construction period and delay in collection |
| Equity ratio | Look at resilience against high costs and worsening cash flow |
| Human resources/DX investment | Leads to labor savings, construction management, and improvement of dependence on outsourcing |
The simple view that ``buy construction stocks because infrastructure is aging'' is dangerous.
There is demand for infrastructure. However, there are companies that can turn this demand into profits and companies that only bear the costs.
Related listed stocks that are attracting attention
Although Ken-O Co., Ltd. itself is not listed, the following listed companies can be compared in terms of themes related to construction, aging infrastructure, and water supply.
| Brand | Code | Featured Themes |
|---|---|---|
| Maeda Kosen | 7821 | Infrastructure repair, disaster prevention and civil engineering materials |
| Kurimoto Iron Works | 5602 | Water pipes, cast iron pipes, and infrastructure renewal |
| Nippon Hume | 5262 | Sewerage, concrete products |
| Taisei Corporation | 1801 | Major general contractor, selective orders |
| Kajima Corporation | 1812 | Large-scale infrastructure, urban redevelopment |
| Hitachi Construction Machinery | 6305 | Construction machinery, infrastructure investment related |
However, just because a stock is related doesn't mean you should buy it.
When making investment decisions, you should check the following points:
- Are you able to pass on the price?
- Is the operating profit margin improving?
- Are unprofitable construction projects suppressed? *Do you have the financial capacity to absorb material costs?
- Are you investing in labor saving, construction DX, and site management?
Construction-related stocks are a sector where long-term infrastructure demand themes and short-term high cost risks exist at the same time.
Conclusion for investors
The bankruptcy of Ken-O Co., Ltd. is an important warning for the construction industry in 2026.
There are three points.
- Ken-O Co., Ltd. is an unlisted company and is not subject to stock price forecasts.
- Bankruptcies are caused by high material costs, extended construction periods, worsening cash flow, and credit concerns.
- When looking at construction-related stocks, you should focus on profit margins and price pass-through ability rather than sales.
Demand in the construction and infrastructure market will remain from 2026 to 2027.
However, the companies that will survive will not be those that simply increase orders, but those that can choose highly profitable projects and absorb rising costs.
Investors need to choose ``companies that can protect their profits'' rather than ``industries where there is demand.''
Source
This article is based on published reports and public materials.
- [NetIB-News “Ken-O Co., Ltd. (Nakano-ku, Tokyo) and 2 other companies: Water supply cable replacement work, etc.” May 19, 2026] (https://www.data-max.co.jp/article/84841)
- [JC-NET “Three companies including Ken-O Co., Ltd./Decision to commence bankruptcy proceedings” May 19, 2026] (https://n-seikei.jp/2026/05/post-118960.html)
- [Appendix related to the Tokyo Metropolitan Government's published document "Supervisory measures against construction companies"] (https://www.metro.tokyo.lg.jp/documents/d/tosei/20250404_03_01-pdf)