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Amphastar PharmaceuticalsAMPH -2.18%83 Earnings Yield (Joel Greenblatt) % is 10.13% as of Mar. 2026, which is 83% above its 10-year median of 5.53. GuruFocus rates AMPH with a GF Score™ of 83/100 and a GF Value™ of $49.05 (Significantly Undervalued). The stock has 4 warning signs investors should review. Among 1,011 Drug Manufacturers companies, Amphastar Pharmaceuticals ranks better than 82.2% on this metric.
Amphastar Pharmaceuticals's Enterprise Value for the quarter that ended in Mar. 2026 was $1,268.9 Mil.
Amphastar Pharmaceuticals's EBIT for the trailing twelve months (TTM) ended in Mar. 2026 was $128.6 Mil. Amphastar Pharmaceuticals's Earnings Yield (Joel Greenblatt) for the quarter that ended in Mar. 2026 was 10.13%.
The historical rank and industry rank for Amphastar Pharmaceuticals's Earnings Yield (Joel Greenblatt) % or its related term are showing as below:
AMPH'
s Earnings Yield (Joel Greenblatt) % Range Over the Past 10 Years
Min: -2.08 Med: 5.53 Max: 13.24
Current: 10.48
During the past 13 years, the highest Earnings Yield (Joel Greenblatt) of Amphastar Pharmaceuticals was 13.24%. The lowest was -2.08%. And the median was 5.53%.
AMPH's Earnings Yield (Joel Greenblatt) % is ranked better than 82.2% of 1011
companies
in the Drug Manufacturers industry
Industry Median: 3.31
vs AMPH: 10.48
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) %. Amphastar Pharmaceuticals's Forward Rate of Return (Yacktman) % for the quarter that ended in Mar. 2026 was 31.67%. 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.
Amphastar Pharmaceuticals Earnings Yield (Joel Greenblatt) % Related Terms
Amphastar Pharmaceuticals Earnings Yield (Joel Greenblatt) % Historical Data
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The historical data trend for Amphastar 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 Drug Manufacturers - Specialty & Generic subindustry, Amphastar 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.
Amphastar Pharmaceuticals Earnings Yield (Joel Greenblatt) % vs Drug Manufacturers Industry
For the Drug Manufacturers industry and Healthcare sector, Amphastar Pharmaceuticals's Earnings Yield (Joel Greenblatt) % distribution charts can be found below:
* The bar in red indicates where Amphastar 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.
Amphastar Pharmaceuticalss Earnings Yield (Joel Greenblatt) for the fiscal year that ended in Dec. 2025 is calculated as
Amphastar Pharmaceuticals's EBIT for the trailing twelve months (TTM) ended in Mar. 2026 adds up the quarterly data reported by the company within the most recent 12 months, which was $128.6 Mil.
What does a Earnings Yield (Joel Greenblatt) % of 10.13% mean?
Amphastar Pharmaceuticals (AMPH) has a Earnings Yield (Joel Greenblatt) % of 10.13% as of Mar. 2026. Joel Greenblatt's earnings yield equals the ratio of earnings before interest and taxes to enterprise value. View historical data on Amphastar Pharmaceuticals and its competitors. This is 83% above median its historical median of 5.53. According to the industry distribution chart, Amphastar Pharmaceuticals ranks #180 out of 1011 companies in the Drug Manufacturers industry, placing it in the top 17.8%.
Is Amphastar Pharmaceuticals' Earnings Yield (Joel Greenblatt) % too high?
Amphastar Pharmaceuticals' current Earnings Yield (Joel Greenblatt) % of 10.13% is 83% above median its 10-year median of 5.53. The Drug Manufacturers industry median Earnings Yield (Joel Greenblatt) % is 3.31. Amphastar Pharmaceuticals' value of 10.13% is 206% above this industry median. Based on the distribution chart, Amphastar Pharmaceuticals ranks #180 out of 1011 companies in the Drug Manufacturers industry, which is in the top quartile — a strong position relative to peers. Overall, Amphastar Pharmaceuticals has a GF Score™ of 83/100 and is considered Significantly Undervalued, reflecting its overall financial health beyond just this single metric.
How does Amphastar Pharmaceuticals' Earnings Yield (Joel Greenblatt) % compare to ETON and PCRX?
According to the Drug Manufacturers industry distribution chart, Amphastar Pharmaceuticals ranks #180 out of 1011 companies for Earnings Yield (Joel Greenblatt) %. This places Amphastar Pharmaceuticals in the top 18% of its industry — outperforming the majority of peers. The industry median Earnings Yield (Joel Greenblatt) % is 3.31. Amphastar Pharmaceuticals' value of 10.13% is 206% above this benchmark. While the company's 10-year median is 5.53 vs. the industry median of 3.31, Amphastar Pharmaceuticals has consistently been above 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 Earnings Yield (Joel Greenblatt) % for a Drug Manufacturers company?
The median Earnings Yield (Joel Greenblatt) % among Drug Manufacturers companies is 3.31, based on 1,011 companies in the industry. Companies in the top quartile (top 25%) have a Earnings Yield (Joel Greenblatt) % significantly above this median, while those in the bottom quartile fall well below. However, Earnings Yield (Joel Greenblatt) % should not be evaluated in isolation — investors should consider it alongside profitability, growth, and financial strength metrics. Amphastar Pharmaceuticals's current Earnings Yield (Joel Greenblatt) % of 10.13% is 206% above 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 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 Amphastar Pharmaceuticals and its competitors. For the Drug Manufacturers industry, the median Earnings Yield (Joel Greenblatt) % is 3.31 — values significantly above this may indicate overvaluation, while values below may suggest a bargain or underlying issues. Amphastar Pharmaceuticals's current Earnings Yield (Joel Greenblatt) % is 10.13%, which is 83% above median its own 10-year median of 5.53. However, context matters — high-growth companies often justify higher valuations. Always evaluate alongside other metrics like GF Score™ and GF Value™.
Is Amphastar Pharmaceuticals stock overvalued right now?
Based on GuruFocus' analysis, Amphastar Pharmaceuticals (AMPH) is currently considered Significantly Undervalued. The stock's GF Value™ is $49.05, compared to a current price of $18.87 — trading 61.5% below its estimated fair value. The current Earnings Yield (Joel Greenblatt) % is 10.13%, which is 83% above median its 10-year median of 5.53 and 206% above the Drug Manufacturers industry median of 3.31. Amphastar Pharmaceuticals' overall GF Score™ is 83/100 with 4 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 Amphastar Pharmaceuticals (AMPH), the current Earnings Yield (Joel Greenblatt) % is 10.13% as of Mar. 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 Amphastar Pharmaceuticals (AMPH) Overvalued in 2026?
Based on GuruFocus' analysis, Amphastar Pharmaceuticals stock appears to be undervalued.
The current stock price of $18.87 is trading 61.5% below its estimated GF Value™ of $49.05.
GuruFocus considers Amphastar Pharmaceuticals to be Significantly Undervalued.
Key valuation signals for AMPH:
Earnings Yield (Joel Greenblatt) %: 10.13% (83% above median its 10-year median of 5.53)
GF Value™: $49.05 vs. price of $18.87 (61.5% below fair value)
Industry Position: 206% above the Drug Manufacturers median (#180 of 1011)
No single metric tells the full story. See the AMPH stock analysis page for a complete view including 30-year financials, guru trades, and insider activity.
Amphastar Pharmaceuticals Inc is a bio-pharmaceutical company focusing on developing, manufacturing, marketing, and selling technically challenging generic and proprietary injectable, inhalation, and intranasal products, as well as insulin active pharmaceutical ingredient (or insulin API products. The company's finished products are used in hospital or urgent care clinical settings and are contracted and distributed through group purchasing organizations and drug wholesalers. The company has one reportable segment: pharmaceutical products. Geographically, the business presence of the firm is seen in the United States, China, and France, of which the U.S. accounts for the majority of the revenue.
83GF Score
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