26.13
price down icon0.53%   -0.14
after-market After Hours: 26.13
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Amphastar Pharmaceuticals Inc stock is traded at $26.13, with a volume of 370.90K. It is down -0.53% in the last 24 hours and up +18.88% over the past month. 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.
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Previous Close:
$26.27
Open:
$26.25
24h Volume:
370.90K
Relative Volume:
0.82
Market Cap:
$1.11B
Revenue:
$720.53M
Net Income/Loss:
$79.23M
P/E Ratio:
15.70
EPS:
1.6648
Net Cash Flow:
$132.94M
1W Performance:
+10.63%
1M Performance:
+18.88%
6M Performance:
+33.52%
1Y Performance:
-0.87%
1-Day Range:
Value
$25.66
$26.63
1-Week Range:
Value
$23.45
$26.63
52-Week Range:
Value
$16.64
$29.52

Amphastar Pharmaceuticals Inc Stock (AMPH) Company Profile

Name
Name
Amphastar Pharmaceuticals Inc
Name
Phone
909-980-9484
Name
Address
11570 SIXTH STREET, RANCHO CUCAMONGA, CA
Name
Employee
1,976
Name
Twitter
Name
Next Earnings Date
2026-11-05
Name
Latest SEC Filings
Name
AMPH's Discussions on Twitter

Compare AMPH vs TAK, TEVA, HLN, ZTS, VTRS

Stocks Price Market Cap Revenue Net Income Cash Flow EPS
AMPH icon
AMPH
Amphastar Pharmaceuticals Inc
26.13 1.11B 720.53M 79.23M 132.94M 1.6648
TAK icon
TAK
Takeda Pharmaceutical Co Adr
18.86 60.23B 29.91B 1.30B 3.49B 0.4056
TEVA icon
TEVA
Teva Pharmaceutical Industries Ltd Adr
39.19 45.71B 17.53B 1.58B 444.18M 1.3457
HLN icon
HLN
Haleon Plc Adr
9.26 40.72B 14.54B 2.22B 2.58B 0.4871
ZTS icon
ZTS
Zoetis Inc
71.05 29.36B 9.51B 2.64B 2.14B 6.0361
VTRS icon
VTRS
Viatris Inc
17.83 20.48B 14.57B -296.50M 1.64B -0.259

Amphastar Pharmaceuticals Inc Stock (AMPH) Upgrades & Downgrades

Date Action Analyst Rating Change
Apr-21-26 Downgrade Jefferies Buy → Hold
Dec-09-25 Initiated Barclays Equal Weight
Aug-12-25 Upgrade Needham Hold → Buy
May-12-25 Downgrade JP Morgan Overweight → Neutral
Feb-04-25 Downgrade Piper Sandler Overweight → Neutral
Nov-22-24 Initiated Wells Fargo Equal Weight
Mar-05-24 Initiated JP Morgan Overweight
Nov-17-23 Initiated BofA Securities Neutral
Jul-25-23 Resumed Jefferies Buy
Oct-21-22 Resumed Jefferies Buy
Jul-29-22 Initiated CapitalOne Overweight
Jan-07-22 Upgrade Piper Sandler Neutral → Overweight
Jan-08-21 Downgrade Wells Fargo Overweight → Equal Weight
Oct-05-20 Upgrade Northland Capital Market Perform → Outperform
May-01-20 Initiated Northland Capital Outperform
Mar-13-19 Downgrade Needham Buy → Hold
Mar-13-19 Downgrade Piper Jaffray Overweight → Neutral
Aug-10-18 Reiterated Needham Buy
Mar-13-18 Reiterated Needham Buy
Dec-01-17 Reiterated Needham Buy
Nov-09-17 Downgrade Raymond James Outperform → Mkt Perform
Sep-27-17 Reiterated Needham Buy
Mar-14-17 Downgrade Raymond James Strong Buy → Outperform
Aug-09-16 Reiterated Needham Buy
May-10-16 Reiterated Needham Buy
Feb-19-16 Initiated Wells Fargo Outperform
Jun-19-15 Reiterated Needham Buy
Jun-03-15 Initiated Raymond James Strong Buy
Jul-21-14 Initiated Needham Buy
View All

Amphastar Pharmaceuticals Inc Stock (AMPH) Latest News

pulisher
Sep 24, 2026

Is It Too Late to Buy Amphastar Pharmaceuticals Inc (AMPH) After 5.2% Rally? GF Value Says Undervalued - GuruFocus

Sep 24, 2026
pulisher
Sep 24, 2026

Amphastar Pharmaceuticals, Inc. (AMPH) Stock Price, News, Quote & History - Yahoo! Finance Canada

Sep 24, 2026
pulisher
Sep 24, 2026

Amphastar Pharmaceuticals, Inc. (AMPH) Stock Forecasts - Yahoo Finance

Sep 24, 2026
pulisher
Sep 23, 2026

Insider Selling: Amphastar Pharmaceuticals (NASDAQ:AMPH) CFO Sells 4,139 Shares - MarketBeat

Sep 23, 2026
pulisher
Sep 23, 2026

At $25 a share, Amphastar Pharmaceuticals (AMPH) CFO William Peters sold 4,139 shares. - Stock Titan

Sep 23, 2026
pulisher
Sep 21, 2026

Amphastar (NASDAQ: AMPH) exec plans 4,139-share Rule 144 sale - Stock Titan

Sep 21, 2026
pulisher
Sep 21, 2026

Amphastar Pharmaceuticals, Inc. (AMPH) Stock forecasts - Yahoo Finance UK

Sep 21, 2026
pulisher
Sep 17, 2026

Amphastar Pharmaceuticals (NASDAQ:AMPH) EVP Rong Zhou Sells 10,000 Shares of Stock - MarketBeat

Sep 17, 2026
pulisher
Sep 17, 2026

Amphastar Pharmaceuticals (NASDAQ:AMPH): Strongest Q2 Results from the Generic Pharmaceuticals Group - finance.yahoo.com

Sep 17, 2026
pulisher
Sep 16, 2026

Squarepoint Ops LLC Has $1.59 Million Stock Holdings in Amphastar Pharmaceuticals, Inc. $AMPH - MarketBeat

Sep 16, 2026
pulisher
Sep 12, 2026

Amphastar Pharmaceuticals (NASDAQ:AMPH) Lowered to "Buy" Rating by Wall Street Zen - MarketBeat

Sep 12, 2026
pulisher
Sep 07, 2026

Legal & General Group Plc Makes New $1.58 Million Investment in Amphastar Pharmaceuticals, Inc. $AMPH - MarketBeat

Sep 07, 2026
pulisher
Sep 06, 2026

Amphastar Pharmaceuticals (AMPH) Rebounds In Focus, Is It Slightly Overvalued? - Yahoo Finance

Sep 06, 2026
pulisher
Sep 06, 2026

Bank of New York Mellon Corp Makes New Investment in Amphastar Pharmaceuticals, Inc. $AMPH - MarketBeat

Sep 06, 2026
pulisher
Sep 05, 2026

Amphastar Pharmaceuticals, Inc. (NASDAQ:AMPH) Receives Consensus Recommendation of "Reduce" from Analysts - MarketBeat

Sep 05, 2026
pulisher
Sep 05, 2026

Amphastar Pharmaceuticals (AMPH) Stock Looks Cheap With Earnings Doing The Heavy Lifting - Yahoo Finance

Sep 05, 2026
pulisher
Sep 03, 2026

Rong Zhou Sells 3,187 Shares of Amphastar Pharmaceuticals (NASDAQ:AMPH) Stock - MarketBeat

Sep 03, 2026
pulisher
Sep 03, 2026

Insider sells 3,187 shares at Amphastar (NASDAQ: AMPH) - Stock Titan

Sep 03, 2026
pulisher
Sep 02, 2026

A Look at Amphastar Pharmaceuticals Inc (AMPH) After 3.3% Gain -- GF Value $35.96 vs Price $23.74 - GuruFocus

Sep 02, 2026
pulisher
Sep 02, 2026

Empowered Funds LLC Invests $3.29 Million in Amphastar Pharmaceuticals, Inc. $AMPH - MarketBeat

Sep 02, 2026
pulisher
Sep 01, 2026

Amphastar (NASDAQ: AMPH) VP plans Rule 144 stock sale led by 10,000-share option exercise - Stock Titan

Sep 01, 2026
pulisher
Sep 01, 2026

Amphastar Pharmaceuticals to Present at the Wells Fargo 21st Annual Healthcare Conference - Stock Titan

Sep 01, 2026
pulisher
Aug 31, 2026

Zacks Industry Outlook Highlights Amphastar Pharmaceuticals, Sandoz and Viatris - Yahoo Finance

Aug 31, 2026
pulisher
Aug 31, 2026

Bank of America Corp DE Acquires 46,149 Shares of Amphastar Pharmaceuticals, Inc. $AMPH - MarketBeat

Aug 31, 2026
pulisher
Aug 29, 2026

Amphastar Pharmaceuticals, Inc. $AMPH Stock Holdings Lifted by Algert Global LLC - marketbeat.com

Aug 29, 2026
pulisher
Aug 28, 2026

Amphastar Pharmaceuticals (NASDAQ:AMPH) Stock Price Passes Above 50-Day Moving AverageShould You Sell? - marketbeat.com

Aug 28, 2026
pulisher
Aug 22, 2026

Analysts Estimate Amphastar Pharmaceuticals (AMPH) to Report a Decline in Earnings: What to Look Out for - Eastern Progress

Aug 22, 2026
pulisher
Aug 20, 2026

Amphastar Pharmaceuticals Earnings Call Balances Growth And Risk - TipRanks

Aug 20, 2026
pulisher
Aug 20, 2026

Denali Advisors LLC Has $7.59 Million Position in Amphastar Pharmaceuticals, Inc. $AMPH - MarketBeat

Aug 20, 2026
pulisher
Aug 19, 2026

Amphastar (AMPH) Quarterly Results: EPS Exceeds Its Estimate in Latest Trading; Trading Response: The Stock Ends Up 2.30% on the DayEarnings Weakness Phase - Vinanet

Aug 19, 2026
pulisher
Aug 18, 2026

Amphastar (NASDAQ: AMPH) insider lines up stock sale after option exercise - Stock Titan

Aug 18, 2026
pulisher
Aug 18, 2026

Barclays Issues Positive Forecast for Amphastar Pharmaceuticals (NASDAQ:AMPH) Stock Price - MarketBeat

Aug 18, 2026
pulisher
Aug 18, 2026

Barclays Adjusts Price Target on Amphastar Pharmaceuticals to $23 From $20, Maintains Equalweight Rating - marketscreener.com

Aug 18, 2026
pulisher
Aug 14, 2026

Is It Too Late to Buy Amphastar Pharmaceuticals Inc (AMPH) After 3.6% Rally? GF Value Says Undervalued - GuruFocus

Aug 14, 2026
pulisher
Aug 14, 2026

Lead Independent Director Richard Prins Sold A Bunch Of Shares In Amphastar Pharmaceuticals - simplywall.st

Aug 14, 2026
pulisher
Aug 14, 2026

The Top 5 Analyst Questions From Amphastar Pharmaceuticals’s Q2 Earnings Call - Yahoo Finance

Aug 14, 2026
pulisher
Aug 13, 2026

Amphastar Pharmaceuticals (AMPH) Director Richard Prins Sells 7, - GuruFocus

Aug 13, 2026
pulisher
Aug 12, 2026

Richard Prins Sells 7,973 Shares of Amphastar Pharmaceuticals (NASDAQ:AMPH) Stock - MarketBeat

Aug 12, 2026
pulisher
Aug 12, 2026

Amphastar director Richard Prins disposes of shares valued at $161,851 By Investing.com - Investing.com South Africa

Aug 12, 2026
pulisher
Aug 12, 2026

Amphastar director Richard Prins disposes of shares valued at $161,851 - Investing.com

Aug 12, 2026
pulisher
Aug 12, 2026

Director Richard Prins sells 7,973 Amphastar (AMPH) shares at $20.30 - Stock Titan

Aug 12, 2026
pulisher
Aug 12, 2026

Amphastar CFO William Peters sells $183,886 in company stock - Investing.com

Aug 12, 2026
pulisher
Aug 12, 2026

Enterprise value to EBITDA forward of Amphastar Pharmaceuticals, Inc. – MUN:29A - TradingView

Aug 12, 2026
pulisher
Aug 11, 2026

Amphastar Pharmaceuticals (NASDAQ:AMPH) CFO William Peters Sells 8,180 Shares - MarketBeat

Aug 11, 2026
pulisher
Aug 11, 2026

Amphastar (AMPH) CFO exercises options and sells 8,180 shares in 10b5-1 trade - Stock Titan

Aug 11, 2026
pulisher
Aug 11, 2026

AMPH (AMPH) schedules Rule 144 stock sale tied to RSU vesting - Stock Titan

Aug 11, 2026
pulisher
Aug 11, 2026

Amphastar Pharmaceuticals, Inc. (NASDAQ:AMPH) Receives Average Recommendation of "Reduce" from Analysts - MarketBeat

Aug 11, 2026
pulisher
Aug 10, 2026

Weekly Recap: Amphastar Q2 growth, $100M BAQSIMI and IMS FDA warning - TradingView

Aug 10, 2026
pulisher
Aug 09, 2026

Results: Amphastar Pharmaceuticals, Inc. Exceeded Expectations And The Consensus Has Updated Its Estimates - Moomoo

Aug 09, 2026
pulisher
Aug 08, 2026

Amphastar Pharmaceuticals (AMPH) Stock Rebound Meets Margin Pressure And Valuation Gap - Sahm

Aug 08, 2026
pulisher
Aug 08, 2026

Amphastar Pharmaceuticals (NASDAQ:AMPH) Upgraded by Wall Street Zen to "Strong-Buy" Rating - MarketBeat

Aug 08, 2026

Amphastar Pharmaceuticals Inc Stock (AMPH) Financials Data

Revenue

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Net Income

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Cash Flow

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EPS

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$19.77
price down icon 0.18%
RDY RDY
$12.25
price down icon 0.41%
$22.31
price down icon 0.18%
$138.40
price down icon 0.39%
$475.45
price up icon 0.69%
$17.83
price up icon 2.35%
Cap:     |  Volume (24h):