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.
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.
CStone PharmaceuticalsCSPHF 42 Earnings Yield (Joel Greenblatt) % is -6.29% as of Dec. 2025. GuruFocus rates CSPHF with a GF Score™ of 42/100 and a GF Value™ of $0.13 (Significantly Overvalued). The stock has 7 warning signs investors should review. Among 1,328 Biotechnology companies, CStone Pharmaceuticals ranks better than 60.17% on this metric.
CStone Pharmaceuticals's Enterprise Value for the quarter that ended in Dec. 2025 was $1,235.28 Mil.
CStone Pharmaceuticals's EBIT for the trailing twelve months (TTM) ended in Dec. 2025 was $-57.59 Mil. CStone Pharmaceuticals's Earnings Yield (Joel Greenblatt) for the quarter that ended in Dec. 2025 was -6.29%.
The historical rank and industry rank for CStone Pharmaceuticals's Earnings Yield (Joel Greenblatt) % or its related term are showing as below:
CSPHF'
s Earnings Yield (Joel Greenblatt) % Range Over the Past 10 Years
Min: -117.25 Med: -23.58 Max: -0.53
Current: -5.75
During the past 10 years, the highest Earnings Yield (Joel Greenblatt) of CStone Pharmaceuticals was -0.53%. The lowest was -117.25%. And the median was -23.58%.
CSPHF's Earnings Yield (Joel Greenblatt) % is ranked better than 60.17% of 1328
companies
in the Biotechnology industry
Industry Median: -10.11
vs CSPHF: -5.75
Joel Greenblatt's definition of earnings yield has the same problems the regular earnings yield does. It does not consider the growth of the company. It only looks at one-year's business operation. For cyclical companies, the earnings yield is usually highest at the peak of the business cycle. But these earnings are rarely sustainable.
A better indicator of the attractiveness of an investment which takes growth into account is the Forward Rate of Return (Yacktman) %. CStone Pharmaceuticals's Forward Rate of Return (Yacktman) % for the quarter that ended in Dec. 2025 was 0.00%. The Forward Rate of Return uses the normalized Free Cash Flow of the past five years, and considers growth. The forward rate of return can be thought of as the return that investors buying the stock today can expect from it in the future.
Joel Greenblatt defines the earnings yield using the above equation because it more accurately reflects the company's profitability relative to its stock price. Items like interest payment and tax etc. are not directly related to the company's operational profitability.
Enterprise Value instead of market cap (share price) is used in the calculation because it is the real price stock and bond investors together pay for the company.
Be Aware
Joel Greenblatt's definition of earnings yield has the same problems the regular earnings yield does. It does not consider the growth of the company. It only looks at one-year's business operation. For cyclical companies, the earnings yield is usually highest at the peak of the business cycle. But these earnings are rarely sustainable.
CStone Pharmaceuticals Earnings Yield (Joel Greenblatt) % Related Terms
CStone Pharmaceuticals Earnings Yield (Joel Greenblatt) % Historical Data
* Premium members only.
The historical data trend for CStone Pharmaceuticals's Earnings Yield (Joel Greenblatt) % 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, CStone Pharmaceuticals's Earnings Yield (Joel Greenblatt) %, along with its competitors' market caps and Earnings Yield (Joel Greenblatt) % 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.
CStone Pharmaceuticals Earnings Yield (Joel Greenblatt) % vs Biotechnology Industry
For the Biotechnology industry and Healthcare sector, CStone Pharmaceuticals's Earnings Yield (Joel Greenblatt) % distribution charts can be found below:
* The bar in red indicates where CStone Pharmaceuticals's Earnings Yield (Joel Greenblatt) % falls into.
In his book, The Little That Beat the Market, hedge fund manager Joel Greenblatt defines Earnings Yield as operating income divided by enterprise value.
CStone Pharmaceuticalss Earnings Yield (Joel Greenblatt) for the fiscal year that ended in Dec. 2025 is calculated as
For company reported semi-annually or annually, GuruFocus only calculate annual data for Earnings Yield (Joel Greenblatt) and apply the annual figure to corresponding quarter.
What does a Earnings Yield (Joel Greenblatt) % of -6.29% mean?
CStone Pharmaceuticals (CSPHF) has a Earnings Yield (Joel Greenblatt) % of -6.29% as of Dec. 2025. Joel Greenblatt's earnings yield equals the ratio of earnings before interest and taxes to enterprise value. View historical data on CStone Pharmaceuticals and its competitors. According to the industry distribution chart, CStone Pharmaceuticals ranks #529 out of 1328 companies in the Biotechnology industry, placing it in the top 39.8%.
Is CStone Pharmaceuticals' Earnings Yield (Joel Greenblatt) % too high?
CStone Pharmaceuticals' current Earnings Yield (Joel Greenblatt) % is -6.29%. Based on the distribution chart, CStone Pharmaceuticals ranks #529 out of 1328 companies in the Biotechnology industry, which is above the industry midpoint. Overall, CStone Pharmaceuticals has a GF Score™ of 42/100 and is considered Significantly Overvalued, reflecting its overall financial health beyond just this single metric.
How does CStone Pharmaceuticals' Earnings Yield (Joel Greenblatt) % compare to VRTX and REGN?
According to the Biotechnology industry distribution chart, CStone Pharmaceuticals ranks #529 out of 1328 companies for Earnings Yield (Joel Greenblatt) %. This puts CStone Pharmaceuticals in the upper half of its industry. See the competitive comparison table and distribution chart on this page for a detailed peer-by-peer breakdown.
What is a good Earnings Yield (Joel Greenblatt) % for a Biotechnology company?
A good Earnings Yield (Joel Greenblatt) % depends on the Biotechnology industry context. However, Earnings Yield (Joel Greenblatt) % 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 Earnings Yield (Joel Greenblatt) % mean?
A high Earnings Yield (Joel Greenblatt) % can signal that a stock is expensive relative to its fundamentals. Joel Greenblatt's earnings yield equals the ratio of earnings before interest and taxes to enterprise value. View historical data on CStone Pharmaceuticals and its competitors. CStone Pharmaceuticals's current Earnings Yield (Joel Greenblatt) % is -6.29%. However, context matters — high-growth companies often justify higher valuations. Always evaluate alongside other metrics like GF Score™ and GF Value™.
Is CStone Pharmaceuticals stock overvalued right now?
Based on GuruFocus' analysis, CStone Pharmaceuticals (CSPHF) is currently considered Significantly Overvalued. The stock's GF Value™ is $0.13, compared to a current price of $0.70 — trading 438.5% above its estimated fair value. The current Earnings Yield (Joel Greenblatt) % is -6.29%. CStone Pharmaceuticals' overall GF Score™ is 42/100 with 7 warning signs to review. Investors should evaluate multiple metrics — including profitability, growth, and financial strength — before making a decision.
How is Earnings Yield (Joel Greenblatt) % calculated?
Earnings Yield (Joel Greenblatt) % is calculated from a company's financial statements. For CStone Pharmaceuticals (CSPHF), the current Earnings Yield (Joel Greenblatt) % is -6.29% as of Dec. 2025. 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 CStone Pharmaceuticals (CSPHF) Overvalued in 2026?
Based on GuruFocus' analysis, CStone Pharmaceuticals stock appears to be overvalued.
The current stock price of $0.70 is trading 438.5% above its estimated GF Value™ of $0.13.
GuruFocus considers CStone Pharmaceuticals to be Significantly Overvalued.
Key valuation signals for CSPHF:
Earnings Yield (Joel Greenblatt) %: -6.29%
GF Value™: $0.13 vs. price of $0.70 (438.5% above fair value)
No single metric tells the full story. See the CSPHF stock analysis page for a complete view including 30-year financials, guru trades, and insider activity.
CStone Pharmaceuticals is engaged in developing and commercializing immuno-oncology and molecularly targeted drugs to address unmet medical needs in cancer treatment. The Group has been operating in one reportable segment, being the research and development of high-complex biopharmaceutical products, the sale of pharmaceutical products, and provide license of its IP or commercialisation licenses to customers.
42GF Score
Get the complete analysis for CSPHF
Earnings Yield (Joel Greenblatt) % is just one metric. See GF Value™, 30-year financials, guru trades, warning signs, and more.
Quick Browse
Personalize
Premium Gurus 
Create New Portfolio
CSPHF has been successfully added to your 
