CellSource Co (TSE:4880) Buyback Yield %: -0.02 (As of Jul. 18, 2026)

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TSE:4880 CellSource Co Ltd TSE:4880
69 GF Score
Price 円342.00
GF Value 円780.71
Valuation Significantly Undervalued
! 6 Warning Signs
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What is CellSource Co Buyback Yield %?

CellSource Co TSE:4880 -0.29% 69 Buyback Yield % is -0.02 as of Jul. 18, 2026. GuruFocus rates TSE:4880 with a GF Score™ of 69/100 and a GF Value™ of 円780.71 (Significantly Undervalued). The stock has 6 warning signs investors should review. Among 740 Biotechnology companies, CellSource Co ranks better than 84.73% on this metric.

Buyback yield is the net repurchase of shares outstanding over the market capital of the company. It is a measure of shareholder return.

CellSource Co's current buyback yield was -0.02%.


CellSource Co Buyback Yield % Historical Data

* Premium members only.

The historical data trend for CellSource Co's Buyback Yield % 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 Buyback Yield % Chart

CellSource Co Annual Data
Trend Oct17 Oct18 Oct19 Oct20 Oct21 Oct22 Oct23 Oct24 Oct25
Buyback Yield %
Get a 7-Day Free Trial Premium Member Only -0.01 -0.02 -4.15 0.02 0.00

CellSource Co Semi-Annual Data
Oct17 Oct18 Oct19 Apr20 Oct20 Apr21 Oct21 Apr22 Oct22 Apr23 Oct23 Apr24 Oct24 Apr25 Oct25 Apr26
Buyback Yield % 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 -4.71 0.02 0.00 0.00 -0.02

TSE:4880 vs VRTX, REGN, ALNY: Buyback Yield % Comparison

For the Biotechnology subindustry, CellSource Co's Buyback Yield %, along with its competitors' market caps and Buyback Yield % 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 Buyback Yield % vs Biotechnology Industry

For the Biotechnology industry and Healthcare sector, CellSource Co's Buyback Yield % distribution charts can be found below:

* The bar in red indicates where CellSource Co's Buyback Yield % falls into.


TSE:4880
69GF Score
CellSource Co Ltd TSE:4880
Buyback Yield % is just one metric. See GF Score™, valuation, warning signs, and more.
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CellSource Co Buyback Yield % Calculation

Buyback yield is a measure of shareholder return.

CellSource Co's Buyback Yield for the fiscal year that ended in Oct. 2025 is calculated as

Buyback Yield=Net Issuance of Stock / Market Cap
=- (Repurchase of Stock + Issuance of Stock) / Market Cap
=- (0 + 0.207) / 10008.595
=-0.00%

CellSource Co's annualized Buyback Yield for the quarter that ended in Apr. 2026 is calculated as

Buyback Yield=Net Issuance of Stock(TTM) / Market Cap
=- (Repurchase of Stock + Issuance of Stock) (TTM)** / Market Cap
=- (0 + 1.615) / 7283.849
=-0.02%

* 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.

** If the quarter corresponds to the year-end period, we will use the annual Repurchase of Stock and Issuance of Stock data .

Frequently Asked Questions Learn more about Buyback Yield % →
What does a Buyback Yield % of -0.02 mean?
CellSource Co (TSE:4880) has a Buyback Yield % of -0.02 as of Jul. 18, 2026. Share buyback yield equals the net issuance of stock divided by market cap. View historical data on CellSource Co and its competitors. According to the industry distribution chart, CellSource Co ranks #113 out of 740 companies in the Biotechnology industry, placing it in the top 15.3%.
Is CellSource Co's Buyback Yield % too high?
CellSource Co's current Buyback Yield % is -0.02. Based on the distribution chart, CellSource Co ranks #113 out of 740 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 Buyback Yield % compare to VRTX and REGN?
According to the Biotechnology industry distribution chart, CellSource Co ranks #113 out of 740 companies for Buyback Yield %. This places CellSource Co in the top 15% of its industry — outperforming the majority of peers. See the competitive comparison table and distribution chart on this page for a detailed peer-by-peer breakdown.
What is a good Buyback Yield % for a Biotechnology company?
A good Buyback Yield % depends on the Biotechnology industry context. However, Buyback Yield % 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 Buyback Yield % mean?
A high Buyback Yield % can signal that a stock is expensive relative to its fundamentals. Share buyback yield equals the net issuance of stock divided by market cap. View historical data on CellSource Co and its competitors. CellSource Co's current Buyback Yield % is -0.02. 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780.71, compared to a current price of 円342.00 — trading 56.2% below its estimated fair value. The current Buyback Yield % is -0.02. 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 Buyback Yield % calculated?
Buyback Yield % is calculated from a company's financial statements. For CellSource Co (TSE:4880), the current Buyback Yield % is -0.02 as of Jul. 18, 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342.00 is trading 56.2% below its estimated GF Value™ of 円780.71. GuruFocus considers CellSource Co to be Significantly Undervalued.

Key valuation signals for TSE:4880:

  • Buyback Yield %: -0.02
  • GF Value™: 円780.71 vs. price of 円342.00 (56.2% below fair value)
  • GF Score™: 69/100 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.
69GF Score

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Buyback Yield % is just one metric. See GF Value™, 30-year financials, guru trades, warning signs, and more.

円342.00
Price
円780.71
GF Value