CellSource Co (TSE:4880) Effective Interest Rate on Debt %: 2.38% (As of Apr. 2026)

Author: Vera Yuan Vera Yuan
Vera Yuan
Vera Yuan
Director of Data and Quant Analytics at GuruFocus
Focused on building reliable datasets, financial models, and research tools for value-minded investors. Committed to turning complex data into practical guidance for value-investing and long-term wealth.
Reviewed by: Charlie Tian Charlie Tian
Charlie Tian
Charlie Tian
Founder & CEO of GuruFocus
Dr. Charlie Tian is the founder and CEO of GuruFocus.com, a leading global investment research platform established in 2004. With a Ph.D. in physics, Dr. Tian transitioned from science to finance, applying a data-driven, disciplined approach to value investing.

TSE:4880 CellSource Co Ltd TSE:4880
70 GF Score
Price 円307.00
GF Value 円779.27
Valuation Significantly Undervalued
! 6 Warning Signs
View Full Analysis

What is CellSource Co Effective Interest Rate on Debt %?

CellSource Co TSE:4880 -0.97% 70 Effective Interest Rate on Debt % is 2.38% as of Apr. 2026. GuruFocus rates TSE:4880 with a GF Score™ of 70/100 and a GF Value™ of 円779.27 (Significantly Undervalued). The stock has 6 warning signs investors should review.

Effective Interest Rate on Debt % is the usage rate that a borrower actually pays on a debt. It is calculated as the positive value of Interest Expense divided by its average total debt. Total debt equals to Long-Term Debt & Capital Lease Obligation plus Short-Term Debt & Capital Lease Obligation. CellSource Co's annualized positive value of Interest Expense for the quarter that ended in Apr. 2026 was 円1 Mil. CellSource Co's average total debt for the quarter that ended in Apr. 2026 was 円41 Mil. Therefore, CellSource Co's annualized Effective Interest Rate on Debt % for the quarter that ended in Apr. 2026 was 2.38%.


CellSource Co  (TSE:4880) Effective Interest Rate on Debt % Explanation

Effective Interest Rate on Debt % measures the usage rate that a borrower actually pays on a debt.


CellSource Co Effective Interest Rate on Debt % Related Terms


CellSource Co Effective Interest Rate on Debt % Historical Data

* Premium members only.

The historical data trend for CellSource Co's Effective Interest Rate on Debt % can be seen below:

* For Operating Data section: All numbers are indicated by the unit behind each term and all currency related amount are in USD.
* For other sections: All numbers are in millions except for per share data, ratio, and percentage. All currency related amount are indicated in the company's associated stock exchange currency.

CellSource Co Effective Interest Rate on Debt % Chart

CellSource Co Annual Data
Trend Oct17 Oct18 Oct19 Oct20 Oct21 Oct22 Oct23 Oct24 Oct25
Effective Interest Rate on Debt %
Get a 7-Day Free Trial Premium Member Only 5.05 1.00 0.39 1.56 1.96

CellSource Co Semi-Annual Data
Oct17 Oct18 Oct19 Apr20 Oct20 Apr21 Oct21 Apr22 Oct22 Apr23 Oct23 Apr24 Oct24 Apr25 Oct25 Apr26
Effective Interest Rate on Debt % Get a 7-Day Free Trial Premium Member Only Premium Member Only Premium Member Only Premium Member Only Premium Member Only Premium Member Only Premium Member Only Premium Member Only 1.48 1.66 1.46 2.64 2.38

TSE:4880 vs VRTX, REGN, RVMD: Effective Interest Rate on Debt % Comparison

For the Biotechnology subindustry, CellSource Co's Effective Interest Rate on Debt %, along with its competitors' market caps and Effective Interest Rate on Debt % data, can be viewed below:

* Competitive companies are chosen from companies within the same industry, with headquarter located in same country, with closest market capitalization; x-axis shows the market cap, and y-axis shows the term value; the bigger the dot, the larger the market cap. Note that "N/A" values will not show up in the chart.


CellSource Co Effective Interest Rate on Debt % vs Biotechnology Industry

For the Biotechnology industry and Healthcare sector, CellSource Co's Effective Interest Rate on Debt % distribution charts can be found below:

* The bar in red indicates where CellSource Co's Effective Interest Rate on Debt % falls into.


TSE:4880
70GF Score
CellSource Co Ltd TSE:4880
Effective Interest Rate on Debt % is just one metric. See GF Score™, valuation, warning signs, and more.
View Full Analysis

CellSource Co Effective Interest Rate on Debt % Calculation

CellSource Co's annualized Effective Interest Rate on Debt % for the fiscal year that ended in Oct. 2025 is calculated as

Effective Interest Rate on Debt %
=-1  *  Interest Expense/( (Total Debt  (A: Oct. 2024 )+Total Debt  (A: Oct. 2025 ))/ count )
=-1  *  -1.314/( (77.29+56.719)/ 2 )
=-1  *  -1.314/67.0045
=1.96 %

where

Total Debt  (A: Oct. 2024 )
=Long-Term Debt & Capital Lease Obligation + Short-Term Debt & Capital Lease Obligation
=56.719 + 20.571
=77.29

Total Debt  (A: Oct. 2025 )
=Long-Term Debt & Capital Lease Obligation + Short-Term Debt & Capital Lease Obligation
=35.829 + 20.89
=56.719

CellSource Co's annualized Effective Interest Rate on Debt % for the quarter that ended in Apr. 2026 is calculated as

Effective Interest Rate on Debt %
=-1  *  Interest Expense/( (Total Debt  (Q: Oct. 2025 )+Total Debt  (Q: Apr. 2026 ))/ count )
=-1  *  -0.974/( (56.719+25.262)/ 2 )
=-1  *  -0.974/40.9905
=2.38 %

where

Total Debt  (Q: Oct. 2025 )
=Long-Term Debt & Capital Lease Obligation + Short-Term Debt & Capital Lease Obligation
=35.829 + 20.89
=56.719

Total Debt  (Q: Apr. 2026 )
=Long-Term Debt & Capital Lease Obligation + Short-Term Debt & Capital Lease Obligation
=25.262 + 0
=25.262

* For Operating Data section: All numbers are indicated by the unit behind each term and all currency related amount are in USD.
* For other sections: All numbers are in millions except for per share data, ratio, and percentage. All currency related amount are indicated in the company's associated stock exchange currency.

In the calculation of annual Effective Interest Rate on Debt %, the Interest Expense of the last fiscal year and the average total debt over the fiscal year are used. In calculating the quarterly data, the Interest Expense data used here is two times the semi-annual (Apr. 2026) interest expense data. Effective Interest Rate on Debt % is displayed in the 30-year financial page.

What does a Effective Interest Rate on Debt % of 2.38% mean?
CellSource Co (TSE:4880) has a Effective Interest Rate on Debt % of 2.38% as of Apr. 2026. Effective interest rate on debt is the rate a company actually pays on its debt. View historical data on CellSource Co and its competitors.
Is CellSource Co's Effective Interest Rate on Debt % too high?
CellSource Co's current Effective Interest Rate on Debt % is 2.38%. Overall, CellSource Co has a GF Score™ of 70/100 and is considered Significantly Undervalued, reflecting its overall financial health beyond just this single metric.
How does CellSource Co's Effective Interest Rate on Debt % compare to VRTX and REGN?
CellSource Co's Effective Interest Rate on Debt % of 2.38% can be compared against companies in the Biotechnology industry. See the competitive comparison table and distribution chart on this page for a detailed peer-by-peer breakdown.
What is a good Effective Interest Rate on Debt % for a Biotechnology company?
A good Effective Interest Rate on Debt % depends on the Biotechnology industry context. However, Effective Interest Rate on Debt % should not be evaluated in isolation — investors should consider it alongside profitability, growth, and financial strength metrics. Use the industry distribution chart on this page to see where any company falls relative to its peers.
What does a high Effective Interest Rate on Debt % mean?
A high Effective Interest Rate on Debt % can signal that a stock is expensive relative to its fundamentals. Effective interest rate on debt is the rate a company actually pays on its debt. View historical data on CellSource Co and its competitors. CellSource Co's current Effective Interest Rate on Debt % is 2.38%. However, context matters — high-growth companies often justify higher valuations. Always evaluate alongside other metrics like GF Score™ and GF Value™.
Is CellSource Co stock overvalued right now?
Based on GuruFocus' analysis, CellSource Co (TSE:4880) is currently considered Significantly Undervalued. The stock's GF Value™ is 円779.27, compared to a current price of 円307.00 — trading 60.6% below its estimated fair value. The current Effective Interest Rate on Debt % is 2.38%. CellSource Co's overall GF Score™ is 70/100 with 6 warning signs to review. Investors should evaluate multiple metrics — including profitability, growth, and financial strength — before making a decision.
How is Effective Interest Rate on Debt % calculated?
Effective Interest Rate on Debt % is calculated from a company's financial statements. For CellSource Co (TSE:4880), the current Effective Interest Rate on Debt % is 2.38% as of Apr. 2026. GuruFocus calculates this using data sourced from SEC filings and annual reports. See the calculation section and 30-year financial data on this page for the full breakdown.

Is CellSource Co (TSE:4880) Overvalued in 2026?

Based on GuruFocus' analysis, CellSource Co stock appears to be undervalued. The current stock price of 円307.00 is trading 60.6% below its estimated GF Value™ of 円779.27. GuruFocus considers CellSource Co to be Significantly Undervalued.

Key valuation signals for TSE:4880:

  • Effective Interest Rate on Debt %: 2.38%
  • GF Value™: 円779.27 vs. price of 円307.00 (60.6% below fair value)
  • GF Score™: 70/100 with 6 warning signs

No single metric tells the full story. See the TSE:4880 stock analysis page for a complete view including 30-year financials, guru trades, and insider activity.


CellSource Co Business Description

Address Shibuya Mitake Building, 2nd Floor, 1-19-5 Shibuya, Shibuya-ku, Tokyo, JPN, 150-0002
CellSource Co Ltd is engaged in contract manufacturing of fat-and blood-derived organizations and cells from medical institutions, provision of legal support to medical institutions in the regenerative medicine business. The company is also involved in sales of medical devices, and sales of own-brand cosmetics in the consumer business.
70GF Score

Get the complete analysis for TSE:4880

Effective Interest Rate on Debt % is just one metric. See GF Value™, 30-year financials, guru trades, warning signs, and more.

円307.00
Price
円779.27
GF Value