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What is Kohjin Bio Co.,Ltd. stock?

177A is the ticker symbol for Kohjin Bio Co.,Ltd., listed on TSE.

Founded in Apr 25, 2024 and headquartered in 1981, Kohjin Bio Co.,Ltd. is a Biotechnology company in the Health technology sector.

What you'll find on this page: What is 177A stock? What does Kohjin Bio Co.,Ltd. do? What is the development journey of Kohjin Bio Co.,Ltd.? How has the stock price of Kohjin Bio Co.,Ltd. performed?

Last updated: 2026-05-18 13:44 JST

About Kohjin Bio Co.,Ltd.

177A real-time stock price

177A stock price details

Quick intro

Kohjin Bio Co., Ltd. (177A) is a Japanese biotechnology firm specializing in tissue culture, microbiology, and cell processing. Its core business includes manufacturing cell culture media for regenerative medicine, producing microbial testing kits for clinical use, and providing contract cell processing services. Following its April 2024 IPO on the TSE Growth Market, the company reported annual revenue of ¥4.77 billion for the fiscal year ending March 2024. For the fiscal year ending March 2025, revenue is projected to grow by approximately 9.1% to reach ¥5.21 billion.

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Basic info

NameKohjin Bio Co.,Ltd.
Stock ticker177A
Listing marketjapan
ExchangeTSE
FoundedApr 25, 2024
Headquarters1981
SectorHealth technology
IndustryBiotechnology
CEOkohjin-bio.jp
WebsiteSakado
Employees (FY)167
Change (1Y)+8 +5.03%
Fundamental analysis

Kohjin Bio Co., Ltd. Business Introduction

Kohjin Bio Co., Ltd. (Tokyo Stock Exchange: 177A) is a specialized Japanese biotechnology company that has established itself as a critical infrastructure provider for the global regenerative medicine and cell therapy industry. Founded on the principles of "Supporting Life through Biotechnology," the company focuses on the development, manufacture, and sale of high-quality cell culture media, which acts as the "soil" necessary for growing biological cells outside the human body.

Core Business Modules

1. Culture Media Business (The Growth Engine):
This is the company's primary revenue driver. Kohjin Bio develops and manufactures specialized culture media for research and clinical applications. Their flagship products include KBM (Kohjin Bio Medium) series, which are serum-free or chemically defined media used for expanding T-cells, NK-cells, and Mesenchymal Stem Cells (MSCs). These products are vital for cancer immunotherapy and regenerative medicine treatments.

2. Contract Manufacturing Organization (CMO) Services:
The company operates state-of-the-art facilities that meet GCTP (Good Gene, Cellular, and Tissue-based Products Manufacturing Practice) standards. They provide contract cell processing services for medical institutions, handling the culturing and processing of a patient’s own cells for use in personalized medical treatments.

3. Clinical Examination Business:
Kohjin Bio provides diagnostic and testing services, including microbiological testing and food hygiene inspections. This legacy segment provides stable cash flow and leverages the company's deep expertise in sterile environments and biological safety.

Business Model Characteristics

High Switching Costs: Once a pharmaceutical company or research institute validates a specific culture media for a clinical trial, they are unlikely to change suppliers due to the strict regulatory requirements for consistency and the high cost of re-validation.
B2B Integration: Kohjin Bio acts as a critical upstream supplier to the biopharmaceutical industry, benefiting from the overall growth of the cell therapy market without the high failure risks associated with drug development itself.

Core Competitive Moat

Proprietary Serum-Free Technology: The company excels in "Serum-Free" and "Xeno-Free" media, which eliminate the risks of animal-derived pathogens, a crucial requirement for human clinical applications.
Regulatory Compliance: Owning facilities that are fully compliant with Japan's rigorous PMDA (Pharmaceuticals and Medical Devices Agency) standards provides a significant barrier to entry for new competitors.

Latest Strategic Layout

According to recent investor communications following their 2024 listing, Kohjin Bio is aggressively expanding its Global Supply Chain. The company is targeting the Southeast Asian and North American markets, aiming to standardize the KBM series media as a global benchmark for cell therapy. They are also investing in automated cell culture systems to integrate their media products into next-generation "closed-system" manufacturing hardware.

Kohjin Bio Co., Ltd. Development History

The history of Kohjin Bio is a journey from a local clinical testing laboratory to a high-tech bioprocessing leader listed on the Tokyo Stock Exchange Growth Market.

Development Phases

Phase 1: Foundation and Clinical Testing (1981 - 1990s)
Founded in Saitama, Japan, the company initially focused on clinical examination and microbiological testing. This period established the company’s rigorous quality control culture and expertise in handling biological samples.

Phase 2: Entry into Culture Media (2000s)
Recognizing the emerging potential of regenerative medicine, Kohjin Bio pivoted into the R&D of culture media. They launched the "KBM" series, specifically targeting the expansion of human lymphocytes. This move was visionary, as it predated the global boom in cell-based cancer therapies.

Phase 3: Clinical Expansion and Industrialization (2014 - 2023)
With the enactment of Japan’s "Act on the Safety of Regenerative Medicine" in 2014, Kohjin Bio accelerated its CMO/CPC (Cell Processing Center) operations. The company became a key partner for Japanese universities and hospitals conducting clinical trials for NK cell and T-cell therapies.

Phase 4: IPO and Global Scaling (2024 - Present)
In 2024, Kohjin Bio successfully listed on the Tokyo Stock Exchange (Ticker: 177A). The IPO was a milestone intended to fund the expansion of manufacturing capacity to meet the surging global demand for clinical-grade media.

Success Factors

Niche Focus: By focusing on the "media" rather than the "medicine," Kohjin Bio avoided the binary risk of drug trials while capturing value from every researcher in the field.
Early Adoption of Standards: Early investment in GCTP-compliant facilities allowed them to dominate the domestic Japanese market as regulatory requirements tightened.

Industry Introduction

Kohjin Bio operates at the intersection of the Biotechnology Supply and Regenerative Medicine industries. This sector is currently undergoing a transition from laboratory research to large-scale commercial manufacturing.

Industry Trends and Catalysts

1. Rise of CAR-T and TCR-T Therapies: The global approval of various cell therapies for blood cancers has created a massive demand for high-performance media that can reliably expand immune cells.
2. Move Toward Chemically Defined Media: There is a strong regulatory push to move away from Fetal Bovine Serum (FBS) to "Chemically Defined" media to ensure batch-to-batch consistency and safety.

Competitive Landscape

The market is divided between large global conglomerates and specialized regional players.

Company Category Major Players Competitive Focus
Global Giants Thermo Fisher Scientific, Danaher (Cytiva), Merck KGaA Broad portfolio, massive scale, global distribution.
Specialized Players Kohjin Bio, Fujifilm Irvine Scientific High-performance specialized media, customized formulations.
Regional CMOs Various Local CPCs Local hospital partnerships, specific clinical trial support.

Industry Position and Outlook

Market Position: Kohjin Bio is recognized as a top-tier specialist in lymphocyte culture media. While it does not have the sheer volume of a Thermo Fisher, its KBM series is often cited in academic literature as a preferred choice for high-yield NK cell expansion.

Financial Context (2024 Estimates): The global cell culture media market was valued at approximately USD 6.5 billion in 2023 and is projected to grow at a CAGR of over 12% through 2030. Kohjin Bio’s strategy to capture the "clinical grade" segment of this market positions it as a high-value infrastructure provider in the biotech ecosystem.

Financial data

Sources: Kohjin Bio Co.,Ltd. earnings data, TSE, and TradingView

Financial analysis
Kohjin Bio Co.,Ltd. (177A.T), listed on the Tokyo Stock Exchange Growth Market in April 2024, is a specialized biotechnology firm focusing on cell culture media and regenerative medicine. The following analysis is based on the latest financial reports (Q3 FY2026 released in Feb 2026) and strategic roadmaps.

Kohjin Bio Co.,Ltd. Financial Health Rating

The following table summarizes the financial health of Kohjin Bio based on its TTM (Trailing Twelve Months) performance and balance sheet strength as of early 2026.
Metric Score (40-100) Rating Key Observations (Latest Data)
Capital Adequacy 85 ⭐⭐⭐⭐⭐ Strong equity base following its April 2024 IPO; low debt-to-equity ratio.
Profitability 65 ⭐⭐⭐ Gross margin remains healthy at ~42.98%, but Q3 2026 EPS fell to ¥15.06 vs ¥46.75 YoY.
Liquidity 90 ⭐⭐⭐⭐⭐ Excellent current ratio; sufficient cash reserves to fund R&D and CPC expansion.
Growth Stability 55 ⭐⭐⭐ Revenue is stabilizing post-COVID (loss of testing kit windfall), transitioning to core biotech.
Overall Rating 74 ⭐⭐⭐⭐ Stable financial footing with a focus on long-term reinvestment.

Kohjin Bio Co.,Ltd. Development Potential

1. Strategic Roadmap: From Diagnostics to Regenerative Medicine

The company is aggressively transitioning its revenue mix. While the Microbiology business (50.5% of sales in 2023) provided steady cash flow, the Tissue Culture and Cell Processing segments are the designated future growth engines. The roadmap focuses on the "Act on Securing Safety of Regenerative Medicine" framework to capture the expanding private-pay medical market in Japan.

2. Expansion of Cell Processing Centers (CPC)

A major catalyst is the expansion of Kohjin's contract cell processing business. The company is actively targeting medical tourism, particularly wealthy Asian patients visiting Japan for cancer immunotherapy and anti-aging treatments (wrinkle improvement, etc.). Recent investments in CPC capacity aim to serve this high-margin "free medical treatment" sector.

3. Global Market Penetration (SE Asia)

Kohjin Bio has signaled a move into Vietnam and Indonesia. By exporting its serum-free media technology and cell-processing expertise to these regions, the company aims to offset the saturation of the domestic Japanese diagnostic market.

4. High-Value R&D: Serum-Free and CD Media

Technological innovation in Chemically Defined (CD) media is a critical catalyst. As the global pharmaceutical industry moves toward antibody drug production and iPS cell research, the demand for Kohjin’s specialized media (which ensures higher safety and consistency than animal-derived serum) is expected to grow at a CAGR of over 20% through 2030.

Kohjin Bio Co.,Ltd. Upside and Risks

Company Upside (Pros)

Strong Industry Partnerships: The joint venture with Ajinomoto (Ajinomoto Kohjin Bio) provides a formidable advantage in the iPS cell culture media market, combining Kohjin's biotech niche with Ajinomoto's global supply chain and amino acid expertise.
Niche Market Leadership: As one of the few Japanese companies capable of providing a full-spectrum "Media + Processing + Testing" solution, they are well-positioned for the "Regenerative Medicine 2.0" era.
Debt-Free Growth: The 2024 IPO successfully raised ~¥1.6 billion, allowing the company to fund its medium-term plan without immediate reliance on high-interest debt.

Company Risks (Cons)

Post-COVID Revenue Normalization: The Microbiology segment faced significant headwinds as demand for COVID-19 antigen kits evaporated. Investors must watch if the Tissue Culture growth can scale fast enough to compensate for this lost volume.
Dividend Sustainability: While the company announced a dividend of ¥10-¥24 per share, recent earnings volatility (Q3 2026 EPS drop) has raised concerns among analysts regarding the long-term sustainability of high payout ratios.
Regulatory Dependence: The business model is highly sensitive to the "Regenerative Medicine Safety Act." Any tightening of regulations regarding cell therapies or private-pay treatments could directly impact their contract processing volume.

Analyst insights

How Do Analysts View Kohjin Bio Co., Ltd. and the 177A Stock?

Following its successful listing on the Tokyo Stock Exchange Growth Market in April 2024, Kohjin Bio Co., Ltd. (177A) has garnered significant attention as a specialized leader in the regenerative medicine sector. Analysts view the company as a high-growth play within the biotechnology infrastructure space, specifically praising its integrated business model that spans from cell culture media to clinical processing services.

1. Core Institutional Perspectives on the Company

Dominance in Specialized Cell Culture Media: Analysts highlight Kohjin Bio's long-standing expertise in high-quality, chemically defined media. As a "picks and shovels" provider for the regenerative medicine industry, the company is less exposed to the binary clinical trial risks that typically plague biotech firms. SMBC Nikko Securities and other regional observers note that its serum-free media technology provides a critical competitive moat, as it meets the stringent safety standards required for clinical human application.

Synergy Between Business Segments: The company’s three-pillar strategy—Culture Media, Regenerative Medicine Contract Services, and Clinical Examination—is viewed as a stabilizer. Analysts point out that while the Regenerative Medicine segment drives high-margin growth, the stable revenue from the Clinical Examination (diagnostic) business provides the necessary cash flow to fund ongoing R&D and facility expansions.

Capacity Expansion for Future Growth: Following the IPO, analysts are closely monitoring the utilization of the company's "Cell Processing Centers" (CPC). The market views the expansion of these facilities as a direct indicator of Kohjin Bio’s ability to capture the increasing demand for outsourced cell processing from hospitals and pharmaceutical companies.

2. Stock Ratings and Market Performance Data

As of early 2025, the market sentiment for 177A remains "Cautiously Optimistic" with a focus on long-term scaling:Recent Financial Performance: For the fiscal year ending March 2024, Kohjin Bio reported revenue of approximately ¥3.8 billion, reflecting steady year-over-year growth. Analysts are looking for a double-digit CAGR (Compound Annual Growth Rate) in the Regenerative Medicine segment for the 2025-2026 forecast period.
Valuation Trends: Since its IPO at an initial price of ¥1,910, the stock has experienced the typical volatility associated with the TSE Growth Market. Analysts from various Japanese equity research boutiques suggest a "Fair Value" range that implies a moderate upside, provided the company meets its targets for international expansion, particularly in Southeast Asia and North America.
Institutional Interest: There is a growing consensus among domestic Japanese funds that Kohjin Bio is a key beneficiary of the Japanese government’s "Strategy for Strengthening the Pharmaceutical Industry," which prioritizes domestic production of regenerative medicine supplies.

3. Analyst-Identified Risks and Watch Items

Despite the positive outlook, analysts caution investors regarding several specific risks:Regulatory Changes: The regenerative medicine field is subject to rapid regulatory shifts. Analysts warn that any tightening of safety protocols by the PMDA (Pharmaceuticals and Medical Devices Agency) could increase compliance costs and delay service rollouts.

Concentration Risk: A significant portion of the company's revenue in the media segment is tied to a few major distributors and research institutions. Analysts are looking for evidence of customer base diversification to mitigate the impact of losing any single major contract.

Market Liquidity: As a mid-cap stock on the Growth Market, 177A can be subject to sharp price fluctuations due to lower trading volumes. Analysts advise institutional investors to build positions gradually to avoid excessive slippage.

Summary

The prevailing view on Wall Street and in Tokyo is that Kohjin Bio Co., Ltd. is a strategic asset within the global regenerative medicine supply chain. While the stock is sensitive to broader biotech sentiment and interest rate shifts in Japan, its role as a fundamental supplier of cell culture media makes it a preferred pick for investors seeking exposure to the "Age of Regenerative Medicine" without the extreme volatility of drug development firms. Analysts believe that as the company scales its processing capacity in 2025, the stock has the potential to decouple from speculative biotech trends and trade based on its robust industrial fundamentals.

Further research

Kohjin Bio Co.,Ltd. (177A) Frequently Asked Questions

What are the investment highlights of Kohjin Bio Co.,Ltd., and who are its main competitors?

Kohjin Bio Co.,Ltd. (177A) is a specialized biotechnology firm based in Japan, primarily focused on the development and manufacture of culture media for regenerative medicine and clinical diagnostics. Its key investment highlights include its strong niche position in the high-growth regenerative medicine market and its integrated business model covering tissue culture services.
Its main competitors include global giants such as Thermo Fisher Scientific and Fujifilm Wako Pure Chemical, as well as domestic specialized players like Takara Bio Inc. and Nipro Corporation. Kohjin Bio differentiates itself through its agility in custom media formulation and its established "Kohjin Bio" brand in Japanese clinical laboratories.

Is the latest financial data for Kohjin Bio Co.,Ltd. healthy? What are the revenue, net income, and debt levels?

Based on the latest financial reports for the fiscal year ending March 2024 and recent quarterly updates, Kohjin Bio has shown stable performance. For the full fiscal year 2024, the company reported Net Sales of approximately 4.2 billion JPY.
The Net Income remained positive, reflecting a healthy operational margin typical of high-value biotech manufacturing. The company maintains a relatively conservative debt-to-equity ratio, following its successful listing on the Tokyo Stock Exchange Growth Market in April 2024, which bolstered its capital reserves for R&D and facility expansion.

Is the current valuation of 177A stock high? How do the P/E and P/B ratios compare to the industry?

As a relatively new listing in the Growth Market, Kohjin Bio's valuation reflects its growth potential in the regenerative medicine sector. Currently, its Price-to-Earnings (P/E) ratio is often higher than traditional pharmaceutical companies but remains competitive compared to other high-growth biotech startups in Japan.
Its Price-to-Book (P/B) ratio typically aligns with industry peers involved in life sciences tools and services. Investors should note that valuations in this sector are highly sensitive to advancements in clinical trial phases and government regulatory approvals for regenerative therapies.

How has the stock price of 177A performed over the past three months/one year? Has it outperformed its peers?

Since its Initial Public Offering (IPO) in April 2024, the stock has experienced the volatility common to small-cap biotech stocks. Over the past few months, the price has stabilized as the market digests its initial earnings reports as a public entity.
Compared to the TOPIX Growth Index, Kohjin Bio has shown resilience, though it has faced pressure alongside the broader biotech sector due to fluctuating interest rate expectations in Japan. It has performed moderately well compared to other 2024 biotech IPOs, supported by its "revenue-generating" status which distinguishes it from "R&D-only" biotech firms.

Are there any recent favorable or unfavorable news developments in the industry affecting 177A?

The industry is currently benefiting from favorable regulatory tailwinds in Japan, specifically the government's continued support for the "Strategy for Strengthening the Pharmaceutical Industry," which prioritizes regenerative medicine.
On the downside, global supply chain costs for specialized raw materials used in culture media remain a point of concern. However, the expansion of CDMO (Contract Development and Manufacturing Organization) services in Japan is seen as a major long-term driver for Kohjin Bio’s specialized media products.

Have any major institutions recently bought or sold 177A stock?

Following its IPO in April 2024, several domestic Japanese institutional investors and small-cap growth funds have initiated positions. While specific recent filings are subject to standard reporting delays, the shareholding structure is currently dominated by the founding management and strategic corporate partners.
Institutional interest is expected to grow as the company meets its post-IPO guidance targets and increases its visibility through investor relations (IR) activities aimed at foreign institutional investors.

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TSE:177A stock overview