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Celyad OncologyCLYYF -20.00%28 Earnings Yield (Joel Greenblatt) % is 15.15% as of Dec. 2025. GuruFocus rates CLYYF with a GF Score™ of 28/100 and a GF Value™ of $0.15 (Significantly Overvalued). The stock has 6 warning signs investors should review. Among 1,327 Biotechnology companies, Celyad Oncology ranks better than 94.05% on this metric.
Celyad Oncology's Enterprise Value for the quarter that ended in Dec. 2025 was $4.71 Mil.
Celyad Oncology's EBIT for the trailing twelve months (TTM) ended in Dec. 2025 was $1.11 Mil. Celyad Oncology's Earnings Yield (Joel Greenblatt) for the quarter that ended in Dec. 2025 was 15.15%.
The historical rank and industry rank for Celyad Oncology's Earnings Yield (Joel Greenblatt) % or its related term are showing as below:
CLYYF'
s Earnings Yield (Joel Greenblatt) % Range Over the Past 10 Years
Min: -39188.06 Med: -27.21 Max: 2881.84
Current: 9
During the past 13 years, the highest Earnings Yield (Joel Greenblatt) of Celyad Oncology was 2881.84%. The lowest was -39188.06%. And the median was -27.21%.
CLYYF's Earnings Yield (Joel Greenblatt) % is ranked better than 94.05% of 1327
companies
in the Biotechnology industry
Industry Median: -10.16
vs CLYYF: 9.00
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) %. Celyad Oncology'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.
Celyad Oncology Earnings Yield (Joel Greenblatt) % Related Terms
Celyad Oncology Earnings Yield (Joel Greenblatt) % Historical Data
* Premium members only.
The historical data trend for Celyad Oncology'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, Celyad Oncology'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.
Celyad Oncology Earnings Yield (Joel Greenblatt) % vs Biotechnology Industry
For the Biotechnology industry and Healthcare sector, Celyad Oncology's Earnings Yield (Joel Greenblatt) % distribution charts can be found below:
* The bar in red indicates where Celyad Oncology'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.
Celyad Oncologys 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 15.15% mean?
Celyad Oncology (CLYYF) has a Earnings Yield (Joel Greenblatt) % of 15.15% 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 Celyad Oncology and its competitors. According to the industry distribution chart, Celyad Oncology ranks #79 out of 1327 companies in the Biotechnology industry, placing it in the top 6%.
Is Celyad Oncology's Earnings Yield (Joel Greenblatt) % too high?
Celyad Oncology's current Earnings Yield (Joel Greenblatt) % is 15.15%. Based on the distribution chart, Celyad Oncology ranks #79 out of 1327 companies in the Biotechnology industry, which is in the top quartile — a strong position relative to peers. Overall, Celyad Oncology has a GF Score™ of 28/100 and is considered Significantly Overvalued, reflecting its overall financial health beyond just this single metric.
How does Celyad Oncology's Earnings Yield (Joel Greenblatt) % compare to VRTX and REGN?
According to the Biotechnology industry distribution chart, Celyad Oncology ranks #79 out of 1327 companies for Earnings Yield (Joel Greenblatt) %. This places Celyad Oncology in the top 6% 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 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 Celyad Oncology and its competitors. Celyad Oncology's current Earnings Yield (Joel Greenblatt) % is 15.15%. However, context matters — high-growth companies often justify higher valuations. Always evaluate alongside other metrics like GF Score™ and GF Value™.
Is Celyad Oncology stock overvalued right now?
Based on GuruFocus' analysis, Celyad Oncology (CLYYF) is currently considered Significantly Overvalued. The stock's GF Value™ is $0.15, compared to a current price of $0.20 — trading 33.3% above its estimated fair value. The current Earnings Yield (Joel Greenblatt) % is 15.15%. Celyad Oncology's overall GF Score™ is 28/100 with 6 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 Celyad Oncology (CLYYF), the current Earnings Yield (Joel Greenblatt) % is 15.15% 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 Celyad Oncology (CLYYF) Overvalued in 2026?
Based on GuruFocus' analysis, Celyad Oncology stock appears to be overvalued.
The current stock price of $0.20 is trading 33.3% above its estimated GF Value™ of $0.15.
GuruFocus considers Celyad Oncology to be Significantly Overvalued.
Key valuation signals for CLYYF:
Earnings Yield (Joel Greenblatt) %: 15.15%
GF Value™: $0.15 vs. price of $0.20 (33.3% above fair value)
No single metric tells the full story. See the CLYYF stock analysis page for a complete view including 30-year financials, guru trades, and insider activity.
Celyad Oncology SA is a biopharmaceutical company focused on the discovery and development of technologies for chimeric antigen receptor T-cell (CAR T) therapies. The company focuses on solid tumors and hematological malignancies. The firm has CYAD-01 and CYAD-02 programs in the pipeline. The company owns trademarks and service marks, including CELYAD, C-CATH, C_CURE, CAR-T Cell, THINK, CYAD01 - Deplethink, CYAD02 - Cycle1, CwalityCAR, CYAD-101, and new engagers. The firm has Cardiology and Immuno-oncology operating segments. It generates the majority of its revenue from the Cardiology segment.
28GF Score
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Earnings Yield (Joel Greenblatt) % is just one metric. See GF Value™, 30-year financials, guru trades, warning signs, and more.
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