CellSource CoTSE:4880 -2.15%69 WACC % is 3.7% as of Jul. 09, 2026, which is 37% below its 10-year median of 5.85. GuruFocus rates TSE:4880 with a GF Score™ of 69/100 and a GF Value™ of 円781.48 (Significantly Undervalued). The stock has 6 warning signs investors should review. Among 1,416 Biotechnology companies, CellSource Co ranks better than 86.09% on this metric.
As of today (2026-07-09), CellSource Co's weighted average cost of capital is 3.7%%. CellSource Co's ROIC % is 4.51% (calculated using TTM income statement data).
CellSource Co generates higher returns on investment than it costs the company to raise the capital needed for that investment. It is earning excess returns. A firm that expects to continue generating positive excess returns on new investments in the future will see its value increase as growth increases.
For a comprehensive WACC calculation, please access the WACC Calculator.
CellSource Co (TSE:4880) WACC % Explanation
Because it costs money to raise capital. A firm that generates higher ROIC % than it costs the company to raise the capital needed for that investment is earning excess returns. A firm that expects to continue generating positive excess returns on new investments in the future will see its value increase as growth increases, whereas a firm that earns returns that do not match up to its cost of capital will destroy value as it grows.
As of today, CellSource Co's weighted average cost of capital is 3.7%%. CellSource Co's ROIC % is 4.51% (calculated using TTM income statement data).
CellSource Co generates higher returns on investment than it costs the company to raise the capital needed for that investment. It is earning excess returns. A firm that expects to continue generating positive excess returns on new investments in the future will see its value increase as growth increases.
Be Aware
1. GuruFocus uses book value of debt (D) to do the calculation. It is simplified by adding latest one-year semi-annual average Short-Term Debt & Capital Lease Obligation and Long-Term Debt & Capital Lease Obligation together.
For companies that report quarterly, GuruFocus combines all of the most recent year's quarterly debt data from the beginning of the year to the year-end and calculates the average.
For companies that report semi-annually, GuruFocus combines all of the most recent year's semi-annual debt data from the start of the year to the year-end and calculates the average.
For companies that report annually, GuruFocus combines the beginning and ending annual debt data from the most recent year and then calculates the average.
2. The WACC formula discussed above does not include Preferred Stock. Please adjust if preferred stock is considered.
3. (Expected Return of the Market - Risk-Free Rate of Return) is also called market premium. GuruFocus requires market premium to be 6%.
4. GuruFocus uses the latest TTM Interest Expense divided by the latest one-year semi-annual average debt to get the simplified cost of debt.
Related Terms
CellSource Co WACC % Historical Data
* Premium members only.
The historical data trend for CellSource Co's WACC % 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.
For the Biotechnology subindustry, CellSource Co's WACC %, along with its competitors' market caps and WACC % 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 WACC % vs Biotechnology Industry
For the Biotechnology industry and Healthcare sector, CellSource Co's WACC % distribution charts can be found below:
* The bar in red indicates where CellSource Co's WACC % falls into.
The weighted average cost of capital (WACC) is the rate that a company is expected to pay on average to all its security holders to finance its assets. The WACC is commonly referred to as the firm's cost of capital. Generally speaking, a company's assets are financed by debt and equity. WACC is the average of the costs of these sources of financing, each of which is weighted by its respective use in the given situation. By taking a weighted average, we can see how much interest the company has to pay for every dollar it finances.
WACC
=
E
/
(E + D)
*
Cost of Equity
+
D
/
(E + D)
*
Cost of Debt
*
(1 - Tax Rate)
1. Weights:
Generally speaking, a company's assets are financed by debt and equity. We need to calculate the weight of equity and the weight of debt.
The market value of equity (E) is also called "Market Cap". As of today, CellSource Co's market capitalization (E) is 円6331.256 Mil.
The market value of debt is typically difficult to calculate, therefore, GuruFocus uses book value of debt (D) to do the calculation. It is simplified by adding the latest one-year semi-annual average Short-Term Debt & Capital Lease Obligation and Long-Term Debt & Capital Lease Obligation together. As of Apr. 2026, CellSource Co's latest one-year semi-annual average Book Value of Debt (D) is 円40.9905 Mil.
a) weight of equity = E / (E + D) = 6331.256 / (6331.256 + 40.9905) = 0.9936
b) weight of debt = D / (E + D) = 40.9905 / (6331.256 + 40.9905) = 0.0064
2. Cost of Equity:
GuruFocus uses Capital Asset Pricing Model (CAPM) to calculate the required rate of return. The formula is:
Cost of Equity = Risk-Free Rate of Return + Beta of Asset * (Expected Return of the Market - Risk-Free Rate of Return)
a) GuruFocus uses 10-Year Treasury Constant Maturity Rate as the risk-free rate. It is updated daily. The current risk-free rate is 2.65%. Please go to Economic Indicators page for more information. Please note that we use the 10-Year Treasury Constant Maturity Rate of the country/region where the company is headquartered. If the data for that country/region is not available, then we will use the 10-Year Treasury Constant Maturity Rate of the United States as default.
b) Beta is the sensitivity of the expected excess asset returns to the expected excess market returns. CellSource Co's beta is 0.1775.
c) (Expected Return of the Market - Risk-Free Rate of Return) is also called market premium. GuruFocus requires market premium to be 6%.
Cost of Equity = 2.65% + 0.1775 * 6% = 3.715%
3. Cost of Debt:
GuruFocus uses latest TTM Interest Expense divided by the latest one-year semi-annual average debt to get the simplified cost of debt.
As of Apr. 2026, CellSource Co's interest expense (positive number) was 円1.237 Mil. Its total Book Value of Debt (D) is 円40.9905 Mil.
Cost of Debt = 1.237 / 40.9905 = 3.0178%.
4. Multiply by one minus TTM Tax Rate:
GuruFocus uses the most recent TTM Tax Expense divided by the most recent TTM Pre-Tax Income to calculate the tax rate. The calculated TTM tax rate is limited to between 0% and 100%. If the calculated tax rate is higher than 100%, it is set to 100%. If the calculated tax rate is less than 0%, it is set to 0%.
The latest calculated TTM Tax Rate = 124.422 / 195.099 = 63.77%.
CellSource Co's Weighted Average Cost Of Capital (WACC) for Today is calculated as:
WACC
=
E / (E + D)
*
Cost of Equity
+
D / (E + D)
*
Cost of Debt
*
(1 - Tax Rate)
=
0.9936
*
3.715%
+
0.0064
*
3.0178%
*
(1 - 63.77%)
=
3.7%
* 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 (TSE:4880) has a WACC % of 3.7% as of Jul. 09, 2026. The weighted average cost of capital (WACC) is the average rate a company pays to finance assets. View historical data on CellSource Co and its competitors. This is 37% below median its historical median of 5.85. Over the past decade, CellSource Co's WACC % has ranged from 2.99 to 6.85. According to the industry distribution chart, CellSource Co ranks #197 out of 1416 companies in the Biotechnology industry, placing it in the top 13.9%.
Is CellSource Co's WACC % too high?
CellSource Co's current WACC % of 3.7% is 37% below median its 10-year median of 5.85. Over the past 10 years, this metric has ranged from a low of 2.99 to a high of 6.85. The Biotechnology industry median WACC % is 10.01. CellSource Co's value of 3.7% is 63% below this industry median. Based on the distribution chart, CellSource Co ranks #197 out of 1416 companies in the Biotechnology industry, which is in the top quartile — a strong position relative to peers. Overall, CellSource Co has a GF Score™ of 69/100 and is considered Significantly Undervalued, reflecting its overall financial health beyond just this single metric.
How does CellSource Co's WACC % compare to VRTX and REGN?
According to the Biotechnology industry distribution chart, CellSource Co ranks #197 out of 1416 companies for WACC %. This places CellSource Co in the top 14% of its industry — outperforming the majority of peers. The industry median WACC % is 10.01. CellSource Co's value of 3.7% is 63% below this benchmark. Historically, CellSource Co's own WACC % has ranged from 2.99 to 6.85 over the past decade. While the company's 10-year median is 5.85 vs. the industry median of 10.01, CellSource Co has consistently been below the industry average. See the competitive comparison table and distribution chart on this page for a detailed peer-by-peer breakdown.
What is a good WACC % for a Biotechnology company?
The median WACC % among Biotechnology companies is 10.01, based on 1,416 companies in the industry. Companies in the top quartile (top 25%) have a WACC % significantly above this median, while those in the bottom quartile fall well below. However, WACC % should not be evaluated in isolation — investors should consider it alongside profitability, growth, and financial strength metrics. CellSource Co's current WACC % of 3.7% is 63% below the industry median. Use the industry distribution chart on this page to see where any company falls relative to its peers.
What does a high WACC % mean?
A high WACC % can signal that a stock is expensive relative to its fundamentals. The weighted average cost of capital (WACC) is the average rate a company pays to finance assets. View historical data on CellSource Co and its competitors. For the Biotechnology industry, the median WACC % is 10.01 — values significantly above this may indicate overvaluation, while values below may suggest a bargain or underlying issues. CellSource Co's current WACC % is 3.7%, which is 37% below median its own 10-year median of 5.85. 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781.48, compared to a current price of 円319.00 — trading 59.2% below its estimated fair value. The current WACC % is 3.7%, which is 37% below median its 10-year median of 5.85 and 63% below the Biotechnology industry median of 10.01. CellSource Co's overall GF Score™ is 69/100 with 6 warning signs to review. Investors should evaluate multiple metrics — including profitability, growth, and financial strength — before making a decision.
How is WACC % calculated?
WACC % is calculated from a company's financial statements. For CellSource Co (TSE:4880), the current WACC % is 3.7% as of Jul. 09, 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319.00 is trading 59.2% below its estimated GF Value™ of 円781.48.
GuruFocus considers CellSource Co to be Significantly Undervalued.
Key valuation signals for TSE:4880:
WACC %: 3.7% (37% below median its 10-year median of 5.85)
GF Value™: 円781.48 vs. price of 円319.00 (59.2% below fair value)
Industry Position: 63% below the Biotechnology median (#197 of 1416)
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 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.
69GF Score
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