Amphastar PharmaceuticalsAMPH +0.12%83 OCF Margin % is 27.95% as of Mar. 2026, which is 63% above its 10-year median of 17.12. GuruFocus rates AMPH with a GF Score™ of 83/100 and a GF Value™ of $48.78 (Significantly Undervalued). The stock has 5 warning signs investors should review. Among 959 Drug Manufacturers companies, Amphastar Pharmaceuticals ranks better than 83.73% on this metric.
* 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 OCF Margin %, along with its competitors' market caps and OCF Margin % 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 OCF Margin % vs Drug Manufacturers Industry
For the Drug Manufacturers industry and Healthcare sector, Amphastar Pharmaceuticals's OCF Margin % distribution charts can be found below:
* The bar in red indicates where Amphastar Pharmaceuticals's OCF Margin % falls into.
* 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.
Amphastar Pharmaceuticals (AMPH) has a OCF Margin % of 27.95% as of Mar. 2026. OCF Margin is the ratio of Cash Flow from Operations to Total Revenue. View historical data on Amphastar Pharmaceuticals and its competitors. This is 63% above median its historical median of 17.12. Over the past decade, Amphastar Pharmaceuticals' OCF Margin % has ranged from 12.96 to 29.15. According to the industry distribution chart, Amphastar Pharmaceuticals ranks #156 out of 959 companies in the Drug Manufacturers industry, placing it in the top 16.3%.
Is Amphastar Pharmaceuticals' OCF Margin % too high?
Amphastar Pharmaceuticals' current OCF Margin % of 27.95% is 63% above median its 10-year median of 17.12. Over the past 10 years, this metric has ranged from a low of 12.96 to a high of 29.15. The Drug Manufacturers industry median OCF Margin % is 9.95. Amphastar Pharmaceuticals' value of 27.95% is 180.9% above this industry median. Based on the distribution chart, Amphastar Pharmaceuticals ranks #156 out of 959 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' OCF Margin % compare to ETON and ESPR?
According to the Drug Manufacturers industry distribution chart, Amphastar Pharmaceuticals ranks #156 out of 959 companies for OCF Margin %. This places Amphastar Pharmaceuticals in the top 16% of its industry — outperforming the majority of peers. The industry median OCF Margin % is 9.95. Amphastar Pharmaceuticals' value of 27.95% is 180.9% above this benchmark. Historically, Amphastar Pharmaceuticals' own OCF Margin % has ranged from 12.96 to 29.15 over the past decade. While the company's 10-year median is 17.12 vs. the industry median of 9.95, 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 OCF Margin % for a Drug Manufacturers company?
The median OCF Margin % among Drug Manufacturers companies is 9.95, based on 959 companies in the industry. Companies in the top quartile (top 25%) have a OCF Margin % significantly above this median, while those in the bottom quartile fall well below. However, OCF Margin % should not be evaluated in isolation — investors should consider it alongside profitability, growth, and financial strength metrics. Amphastar Pharmaceuticals's current OCF Margin % of 27.95% is 180.9% 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 OCF Margin % mean?
A high OCF Margin % can signal that a stock is expensive relative to its fundamentals. OCF Margin is the ratio of Cash Flow from Operations to Total Revenue. View historical data on Amphastar Pharmaceuticals and its competitors. For the Drug Manufacturers industry, the median OCF Margin % is 9.95 — values significantly above this may indicate overvaluation, while values below may suggest a bargain or underlying issues. Amphastar Pharmaceuticals's current OCF Margin % is 27.95%, which is 63% above median its own 10-year median of 17.12. 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 $48.78, compared to a current price of $21.04 — trading 56.9% below its estimated fair value. The current OCF Margin % is 27.95%, which is 63% above median its 10-year median of 17.12 and 180.9% above the Drug Manufacturers industry median of 9.95. Amphastar Pharmaceuticals' overall GF Score™ is 83/100 with 5 warning signs to review. Investors should evaluate multiple metrics — including profitability, growth, and financial strength — before making a decision.
How is OCF Margin % calculated?
OCF Margin % is calculated from a company's financial statements. For Amphastar Pharmaceuticals (AMPH), the current OCF Margin % is 27.95% 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 $21.04 is trading 56.9% below its estimated GF Value™ of $48.78.
GuruFocus considers Amphastar Pharmaceuticals to be Significantly Undervalued.
Key valuation signals for AMPH:
OCF Margin %: 27.95% (63% above median its 10-year median of 17.12)
GF Value™: $48.78 vs. price of $21.04 (56.9% below fair value)
Industry Position: 180.9% above the Drug Manufacturers median (#156 of 959)
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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