Amphastar PharmaceuticalsAMPH +0.98%83 Days Payable is 30.81 as of Mar. 2026, which is 20% below its 10-year median of 38.29. 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 923 Drug Manufacturers companies, Amphastar Pharmaceuticals ranks worse than 83.97% 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 Days Payable, along with its competitors' market caps and Days Payable 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 Days Payable vs Drug Manufacturers Industry
For the Drug Manufacturers industry and Healthcare sector, Amphastar Pharmaceuticals's Days Payable distribution charts can be found below:
* The bar in red indicates where Amphastar Pharmaceuticals's Days Payable falls into.
Amphastar Pharmaceuticals Days Payable Calculation
Days Payable indicates the number of days that the account payable relative to cost of goods sold the company has. An increase of Days Payable may suggest that the company delays paying its suppliers.
Amphastar Pharmaceuticals's Days Payable for the fiscal year that ended in Dec. 2025 is calculated as
* 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 Days Payable of 30.81 as of Mar. 2026. Days payable represents the average amount of days a company waits to pay its invoices from suppliers. View historical data on Amphastar Pharmaceuticals and its competitors. This is 20% below median its historical median of 38.29. Over the past decade, Amphastar Pharmaceuticals' Days Payable has ranged from 28.51 to 54.03. According to the industry distribution chart, Amphastar Pharmaceuticals ranks #775 out of 923 companies in the Drug Manufacturers industry, placing it in the top 84%.
Is Amphastar Pharmaceuticals' Days Payable too high?
Amphastar Pharmaceuticals' current Days Payable of 30.81 is 20% below median its 10-year median of 38.29. Over the past 10 years, this metric has ranged from a low of 28.51 to a high of 54.03. The Drug Manufacturers industry median Days Payable is 90.98. Amphastar Pharmaceuticals' value of 30.81 is 66.1% below this industry median. Based on the distribution chart, Amphastar Pharmaceuticals ranks #775 out of 923 companies in the Drug Manufacturers industry, which is in the bottom quartile 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' Days Payable compare to ETON and ESPR?
According to the Drug Manufacturers industry distribution chart, Amphastar Pharmaceuticals ranks #775 out of 923 companies for Days Payable. This places Amphastar Pharmaceuticals in the lower half of its industry. The industry median Days Payable is 90.98. Amphastar Pharmaceuticals' value of 30.81 is 66.1% below this benchmark. Historically, Amphastar Pharmaceuticals' own Days Payable has ranged from 28.51 to 54.03 over the past decade. While the company's 10-year median is 38.29 vs. the industry median of 90.98, Amphastar Pharmaceuticals has consistently been below 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 Days Payable for a Drug Manufacturers company?
The median Days Payable among Drug Manufacturers companies is 90.98, based on 923 companies in the industry. Companies in the top quartile (top 25%) have a Days Payable significantly above this median, while those in the bottom quartile fall well below. However, Days Payable should not be evaluated in isolation — investors should consider it alongside profitability, growth, and financial strength metrics. Amphastar Pharmaceuticals's current Days Payable of 30.81 is 66.1% below 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 Days Payable mean?
A high Days Payable can signal that a stock is expensive relative to its fundamentals. Days payable represents the average amount of days a company waits to pay its invoices from suppliers. View historical data on Amphastar Pharmaceuticals and its competitors. For the Drug Manufacturers industry, the median Days Payable is 90.98 — values significantly above this may indicate overvaluation, while values below may suggest a bargain or underlying issues. Amphastar Pharmaceuticals's current Days Payable is 30.81, which is 20% below median its own 10-year median of 38.29. 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 $21.22 — trading 56.5% below its estimated fair value. The current Days Payable is 30.81, which is 20% below median its 10-year median of 38.29 and 66.1% below the Drug Manufacturers industry median of 90.98. 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 Days Payable calculated?
Days Payable is calculated from a company's financial statements. For Amphastar Pharmaceuticals (AMPH), the current Days Payable is 30.81 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 $21.22 is trading 56.5% below its estimated GF Value™ of $48.78.
GuruFocus considers Amphastar Pharmaceuticals to be Significantly Undervalued.
Key valuation signals for AMPH:
Days Payable: 30.81 (20% below median its 10-year median of 38.29)
GF Value™: $48.78 vs. price of $21.22 (56.5% below fair value)
Industry Position: 66.1% below the Drug Manufacturers median (#775 of 923)
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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