18.41

1.38% 0.25

After Hours: 18.41

Amphastar Pharmaceuticals Inc (AMPH)

Overview News Price History Option Chain Financials Why AMPH Down? Discussions Forecast

Amphastar Pharmaceuticals Inc stock is traded at $18.41, with a volume of 485.17K. It is up +1.38% in the last 24 hours and down -12.29% 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.

Previous Close:

$18.16

Open:

$18.25

24h Volume:

485.17K

Relative Volume:

0.77

Market Cap:

$811.75M

Revenue:

$719.89M

Net Income/Loss:

$98.09M

P/E Ratio:

9.0538

EPS:

2.0334

Net Cash Flow:

$118.98M

1W Performance:

+9.13%

1M Performance:

-12.29%

6M Performance:

-29.22%

1Y Performance:

-23.93%

1-Day Range:

$17.93

$18.44

1-Week Range:

$16.64

$18.44

52-Week Range:

$16.64

$31.26

Amphastar Pharmaceuticals Inc Stock (AMPH) Company Profile

Name

Amphastar Pharmaceuticals Inc

Sector

Healthcare (1108)

Industry

Drug Manufacturers - Specialty & Generic (86)

Phone

909-980-9484

Address

11570 SIXTH STREET, RANCHO CUCAMONGA, CA

Employee

1,976

Twitter

Next Earnings Date

2026-05-07

Latest SEC Filings

AMPH's Discussions on Twitter

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

Stocks	Price	Market Cap	Revenue	Net Income	Cash Flow	EPS
AMPH Amphastar Pharmaceuticals Inc	18.41	800.73M	719.89M	98.09M	118.98M	2.0334
TAK Takeda Pharmaceutical Co Adr	16.25	52.07B	29.91B	1.30B	3.49B	0.4056
HLN Haleon Plc Adr	9.29	41.28B	14.54B	2.22B	2.58B	0.4871
TEVA Teva Pharmaceutical Industries Ltd Adr	34.07	39.78B	17.53B	1.58B	444.18M	1.3457
ZTS Zoetis Inc	81.32	33.57B	9.51B	2.64B	2.14B	6.0361
UTHR United Therapeutics Corp	568.43	24.02B	3.17B	1.29B	1.01B	27.09

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

May 20, 2026

Why Wells Fargo Lowered Amphastar Pharmaceuticals, Inc. (AMPH) Price Target to $19 - Insider Monkey

May 20, 2026

Why Amphastar Pharmaceuticals (AMPH) Stock Is Trading Lower Today - Yahoo Finance

May 18, 2026

May 17, 2026

Amphastar forecasts BAQSIMI revenue flat to up low single digits, with 3% list price increase - MSN

May 17, 2026

Amphastar Pharmaceuticals Q1 2026: Revenue Miss and Pricing Pressures on BAQSIMI - IndexBox

May 17, 2026

The 5 Most Interesting Analyst Questions From Amphastar Pharmaceuticals’s Q1 Earnings Call - Yahoo Finance

May 17, 2026

May 16, 2026

Pharma Earnings Season 2026: Amphastar Flat, Eli Lilly Surges in Q1News and Statistics - IndexBox

May 16, 2026

Q1 Earnings Roundup: Amphastar Pharmaceuticals (NASDAQ:AMPH) And The Rest Of The Pharmaceuticals Segment - Yahoo Finance

May 16, 2026

May 15, 2026

There May Be Some Bright Spots In Amphastar Pharmaceuticals' (NASDAQ:AMPH) Earnings - simplywall.st

May 15, 2026

Amphastar Pharmaceuticals' (NASDAQ:AMPH) Conservative Accounting Might Explain Soft Earnings - Yahoo Finance

May 15, 2026

Wells Fargo Initiates Amphastar Pharmaceuticals(AMPH.US) With Hold Rating, Announces Target Price $19 - Moomoo

May 15, 2026

May 14, 2026

Is Amphastar Pharmaceuticals Inc (AMPH) a Bargain After 5.6% Dro - GuruFocus

May 14, 2026

Amphastar Shares Fall After Wells Fargo Downgrade - Moomoo

May 14, 2026

This Whirlpool Analyst Is No Longer Bullish; Here Are Top 5 Downgrades For Thursday - Benzinga

May 14, 2026

Amphastar Pharmaceuticals tackles BAQSIMI discount pressure, keeps sales outlook - MSN

May 14, 2026

Amphastar Pharmaceuticals Tackles BAQSIMI Discount Pressure, Keeps Sales Outlook - MarketBeat

May 14, 2026

May 12, 2026

AMPH: Proprietary and biosimilar pipeline expansion drives growth, anchored by BAQSIMI® and Primatene MIST - TradingView

May 12, 2026

How The Amphastar Pharmaceuticals (AMPH) Narrative Is Shifting As Targets Fall And New Drugs Launch - Yahoo Finance

May 12, 2026

May 11, 2026

Amphastar Pharmaceuticals (NASDAQ:AMPH) Earns Neutral Rating from Piper Sandler - MarketBeat

May 11, 2026

(AMPH) Movement as an Input in Quant Signal Sets - Stock Traders Daily

May 11, 2026

Amphastar price target lowered to $21 from $25 at Piper Sandler - TipRanks

May 11, 2026

Earnings Miss: Amphastar Pharmaceuticals, Inc. Missed EPS By 75% And Analysts Are Revising Their Forecasts - Yahoo Finance

May 11, 2026

May 10, 2026

Amphastar Pharmaceuticals (AMPH) Margin Compression Reinforces Bearish Narrative Despite Stable Revenue - Sahm

May 10, 2026

May 09, 2026

Needham downgrades Amphastar Pharmaceuticals (AMPH) - MSN

May 09, 2026

Amphastar Pharmaceuticals (NASDAQ:AMPH) Posts Quarterly Earnings Results - MarketBeat

May 09, 2026

Amphastar Pharmaceuticals, Inc. (NASDAQ:AMPH) Q1 2026 Earnings Call Transcript - Insider Monkey

May 09, 2026