Amphastar P (AMPH) fair value: what the stock is really worth
As of Nov 6, 2026: fair value (intrinsic value) of Amphastar P stock $46.78, price $28.49, upside +64.2%, quality 56 out of 100. Rating: strongly undervalued. Calculated from audited financials with 24 of our 26 valuation models and 37 quality factors, updated daily.
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Amphastar P
AMPH · USThe stock costs 39% less than our calculation considers fair.
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Price vs Fair Value
White line = price, green steps = our fair value per fiscal year. As of Nov 6, 2026.
How to read this chart
60‑month range $16.87 – $65.00 · fair‑value band $24.94 – $60.82 · the $28.49 price screens below the $46.78 fair value. Green steps = our fair value per fiscal year (point-in-time, no hindsight). 1 fiscal year is left out: there the valuation rested on only a fraction of the usual models. As of Nov 6, 2026.
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Company profile
Amphastar Pharmaceuticals, Inc., a bio-pharmaceutical company, develops, manufactures, markets, and sells generic and proprietary injectable, inhalation, and intranasal products in the United States, China, and France.
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It offers BAQSIMI, a dry nasal spray used in an emergency for the treatment of severe hypoglycemia; Primatene MIST, an epinephrine inhalation product for the temporary relief of mild symptoms of intermittent asthma; Glucagon for injection emergency kit; Enoxaparin, an injectable form of low molecular weight heparin for the prevention and treatment of deep vein thrombosis; and REXTOVY and Naloxone for opioid overdose.
The company also provides Cortrosyn, a lyophilized power for use as a diagnostic agent in the screening of patients with adrenocortical insufficiency; Amphadase, a bovine-sourced hyaluronidase injection; Epinephrine injection for allergic reactions; Lidocaine jelly, an anesthetic product for urological procedures; Lidocaine topical solution for various procedures; Phytonadione injection, a vitamin K1 injection for newborn babies; and emergency syringe products, including atropine, calcium chloride, dextrose, epinephrine, lidocaine, and sodium bicarbonate.
In addition, it offers Albuterol sulfate inhalation aerosol for the treatment or prevention of bronchospasm; Iron sucrose injection, an iron replacement product for the treatment of iron deficiency anemia in patients with chronic kidney disease; Teriparatide injection for managing daily osteoporosis therapy; and Ipratropium Bromide HFA inhalation aerosol, an anticholinergic indicated for the maintenance treatment of bronchospasm associated with chronic obstructive pulmonary disease.
Further, the company provides active pharmaceutical ingredient (API) products, such as Recombinant Human Insulin and porcine insulin API. The company was founded in 1996 and is headquartered in Rancho Cucamonga, California.
Stock analysis
Amphastar P (AMPH) currently trades at $28.49, while our model-based Fair Value estimate is $46.78, implying the stock looks roughly 39% undervalued today.
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Valuation
Bull case: the DCF Models group reads highest at a median of $49.38 per share, and 18 of the 24 models we run sit above the $28.49 price.
Bear case: the Economic Profit group reads lowest at $16.29, and 6 of the 24 models stay below the price. Data coverage for this calculation is medium.
Scenario range: $24.94 (bear) to $60.82 (bull), the price of $28.49 sits inside it. Bear and bull are the same models on cautious and optimistic assumptions, a range, not a price target.
Quality & growth
The Quality Score stands at 56/100 (solid quality), in the Healthcare sector.
Mixed Growth: Revenue is growing, but margins or cash flow do not fully confirm the trend.
Amphastar P reported revenue of $720M in FY2025 versus $438M in FY2021, a compound +13.2%/yr. Reported net income was $98.1M in FY2025, compounding +12.1%/yr from FY2021.
Key figures
Market cap $1.3B Small · P/E ratio 16.9 · P/S ratio 1.69 · EPS (TTM) $1.69 · Net margin 13.3% · Return on equity 12.4% · Return on assets (EBIT) 11.9% (5-year average) · Operating margin 24.5%.
Competitive moat
Our AI-assisted moat analysis scores the competitive advantage at 59 out of 100 (medium confidence).
What moves the price
The last reported earnings sit well below what analysts expect (earnings in transition, for example after write-downs or an earnings dip); whether the stock is cheap or expensive hinges on the expected recovery actually arriving. Read the fair value with that caveat.
The share trades about 3% below its 52-week high and 69% above its 52-week low, currently above its 200-day average.
For context, the median of 10 Healthcare peers we cover trades at −27% fair-value upside, at 64%, AMPH screens cheaper than that median.
Fair Value models
All 24 models by family
Quality Score breakdown
It rates the business: profits, how they develop, real cash, balance sheet, investing and share count.
Insider trades
In the last 6 months, 3 officers or directors sold shares worth $1.6M and none bought.
- SaleWilliam J PetersCFO, EVP & TREASURER, Director3× since Aug 7, 2026: 40,950 shares, avg. $26.91$1.1MNov 5, 202610b5-1 plan
- SaleRong ZhouSENIOR EVP, PRODUCTION CENTER3× since Dec 17, 2025: 22,974 shares, avg. $24.86$571,128Sep 16, 2026
- SaleRichard K PrinsDirector2× since Nov 25, 2025: 12,152 shares, avg. $22.64$275,103Aug 11, 2026
- SaleFloyd F. PetersenDirector2× since Nov 13, 2025: 20,842 shares, avg. $26.36$549,332Dec 12, 2025
Plus 10 other filings such as grants, option exercises or tax withholding. They are not market purchases or sales.
Sales are often planned (taxes, diversification, 10b5-1 plans). Purchases with their own money are seen as the stronger sign. For information only: not part of the quality score or Fair Value.
Source: SEC Form 4, as of Nov 6, 2026. All filings at the SEC ↗
Revenue & earnings trend
Growth Forecast
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Compare Amphastar P with another stock
Price, fair value, quality and upside side by side.
Peer GroupⓘHow this stock ranks against its industry: the green marker is this stock, the band is the typical 25–75% peer range, and the tick is the median.Drug Manufacturers - Specialty & Generic · 549 stocks
Valuation Multiplesvs Drug Manufacturers - Specialty & Generic median · lower = cheaper
Strength profile in five axes (Snowflake)
Context: sector, industry, market
- Is the Health Care sector expensive or cheap?
- P/E, EV/EBITDA and margins by industry (reference tables)
- Fair value gap by industry
- Return on assets by industry
- Stock screener with 62 metrics
- Undervalued stocks: US Stocks
- Valuation of the USA market
Values & ESG
Does this company touch areas you may want to avoid? The classification is inferred from sector and industry.
Similar stocks
10 more Drug Manufacturers - Specialty & Generic stocks, each showing price versus our Fair Value estimate.
| Stock | Price | Fair Value | vs Fair Value | Compare |
|---|---|---|---|---|
| Zoetis Inc ZTS | $79.40 | $111.63 | +41% | vs AMPH |
| Jiangsu Hengrui Pharmaceuticals Co 600276 | ¥50.43 | ¥55.21 | +9% | vs AMPH |
| Sun Pharmaceutical Industries Limited SUNPHARMA | ₹1,860 | ₹1,947 | +5% | vs AMPH |
| Haleon plc HLN | $9.14 | $8.61 | −6% | vs AMPH |
| Merck KGaA MRK | €148.75 | €109.18 | −27% | vs AMPH |
| Galderma Group GALD | CHF 191.75 | CHF 109.86 | −43% | vs AMPH |
| Takeda Pharmaceutical Company TAK | $21.02 | $11.31 | −46% | vs AMPH |
| Teva Pharmaceutical Industries Limited TEVA | $42.61 | $20.74 | −51% | vs AMPH |
| Sandoz Group SDZ | CHF 83.78 | CHF 39.70 | −53% | vs AMPH |
| Divi's Laboratories Limited DIVISLAB | ₹10,321 | ₹1,567 | −85% | vs AMPH |
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