Compare Stocks

Comparative Price Performance Over Time

Compare Stocks - Price & Volume

CompanyCurrent Price50-Day Moving Average52-Week RangeMarket CapBetaAvg. VolumeToday's Volume
Altimmune, Inc. stock logo
ALT
Altimmune
$7.08
-6.5%
$9.35
$2.09
$14.84
$501.90M0.055.39 million shs2.20 million shs
Amryt Pharma plc stock logo
AMYT
Amryt Pharma
$14.70
+0.1%
$14.64
$6.41
$14.77
$940.21M0.84757,360 shs2.39 million shs
Athersys, Inc. stock logo
ATHX
Athersys
$0.00
$0.01
$0.01
$1.99
$278K-0.91.77 million shs147,446 shs
Avid Bioservices, Inc. stock logo
CDMO
Avid Bioservices
$6.83
+2.2%
$7.02
$4.07
$19.19
$431.92M1.631.26 million shs1.44 million shs
Prothena Co. plc stock logo
PRTA
Prothena
$20.56
$25.66
$20.32
$79.65
$1.10B0.21756,326 shs341,791 shs
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Price Performance

Company1-Day Performance7-Day Performance30-Day Performance90-Day Performance1-Year Performance
Altimmune, Inc. stock logo
ALT
Altimmune
-6.47%+0.57%-17.00%-23.71%+35.37%
Amryt Pharma plc stock logo
AMYT
Amryt Pharma
0.00%0.00%0.00%0.00%0.00%
Athersys, Inc. stock logo
ATHX
Athersys
-4.26%+12.50%-30.77%-82.76%-99.44%
Avid Bioservices, Inc. stock logo
CDMO
Avid Bioservices
+2.25%+1.79%0.00%-1.30%-63.22%
Prothena Co. plc stock logo
PRTA
Prothena
0.00%-2.10%-19.06%-35.87%-62.09%

MarketRank™

CompanyOverall ScoreAnalyst's OpinionShort Interest ScoreDividend StrengthESG ScoreNews and Social Media SentimentCompany OwnershipEarnings & Valuation
Altimmune, Inc. stock logo
ALT
Altimmune
1.6153 of 5 stars
3.32.00.00.03.21.70.0
Amryt Pharma plc stock logo
AMYT
Amryt Pharma
N/AN/AN/AN/AN/AN/AN/AN/A
Athersys, Inc. stock logo
ATHX
Athersys
N/AN/AN/AN/AN/AN/AN/AN/A
Avid Bioservices, Inc. stock logo
CDMO
Avid Bioservices
3.8803 of 5 stars
3.43.00.04.52.71.70.0
Prothena Co. plc stock logo
PRTA
Prothena
3.3137 of 5 stars
4.41.00.00.02.64.20.6

Analyst Ratings

CompanyConsensus Rating ScoreConsensus RatingConsensus Price Target% Upside from Current Price
Altimmune, Inc. stock logo
ALT
Altimmune
2.67
Moderate Buy$15.00111.86% Upside
Amryt Pharma plc stock logo
AMYT
Amryt Pharma
N/AN/AN/AN/A
Athersys, Inc. stock logo
ATHX
Athersys
N/AN/AN/AN/A
Avid Bioservices, Inc. stock logo
CDMO
Avid Bioservices
2.75
Moderate Buy$14.25108.64% Upside
Prothena Co. plc stock logo
PRTA
Prothena
2.71
Moderate Buy$68.14231.43% Upside

Current Analyst Ratings

Latest CDMO, ALT, ATHX, AMYT, and PRTA Analyst Ratings

DateCompanyBrokerageActionRatingPrice TargetDetails
4/10/2024
Prothena Co. plc stock logo
PRTA
Prothena
Cantor Fitzgerald
Subscribe to MarketBeat All Access for the recommendation accuracy rating
Reiterated RatingOverweight
4/1/2024
Altimmune, Inc. stock logo
ALT
Altimmune
HC Wainwright
Subscribe to MarketBeat All Access for the recommendation accuracy rating
Lower Price TargetBuy ➝ Buy$15.00 ➝ $12.00
3/28/2024
Altimmune, Inc. stock logo
ALT
Altimmune
B. Riley
Subscribe to MarketBeat All Access for the recommendation accuracy rating
Reiterated RatingBuy ➝ Buy$20.00
3/13/2024
Prothena Co. plc stock logo
PRTA
Prothena
HC Wainwright
Subscribe to MarketBeat All Access for the recommendation accuracy rating
Reiterated RatingBuy ➝ Buy$90.00
3/7/2024
Avid Bioservices, Inc. stock logo
CDMO
Avid Bioservices
Royal Bank of Canada
Subscribe to MarketBeat All Access for the recommendation accuracy rating
Reiterated RatingOutperform ➝ Outperform$7.00
2/20/2024
Prothena Co. plc stock logo
PRTA
Prothena
Oppenheimer
Subscribe to MarketBeat All Access for the recommendation accuracy rating
Lower Price TargetOutperform ➝ Outperform$98.00 ➝ $80.00
2/16/2024
Prothena Co. plc stock logo
PRTA
Prothena
JMP Securities
Subscribe to MarketBeat All Access for the recommendation accuracy rating
Boost Price TargetMarket Outperform ➝ Market Outperform$81.00 ➝ $85.00
2/16/2024
Prothena Co. plc stock logo
PRTA
Prothena
Royal Bank of Canada
Subscribe to MarketBeat All Access for the recommendation accuracy rating
Lower Price TargetSector Perform ➝ Sector Perform$36.00 ➝ $35.00
2/13/2024
Altimmune, Inc. stock logo
ALT
Altimmune
B. Riley
Subscribe to MarketBeat All Access for the recommendation accuracy rating
Reiterated RatingBuy ➝ Buy$20.00
1/30/2024
Prothena Co. plc stock logo
PRTA
Prothena
Bank of America
Subscribe to MarketBeat All Access for the recommendation accuracy rating
Reiterated RatingBuy ➝ Neutral$68.00 ➝ $38.00
1/25/2024
Prothena Co. plc stock logo
PRTA
Prothena
Royal Bank of Canada
Subscribe to MarketBeat All Access for the recommendation accuracy rating
Lower Price TargetSector Perform ➝ Sector Perform$43.00 ➝ $36.00
(Data available from 4/25/2021 forward. View 10+ years of historical ratings with our analyst ratings screener.)

Sales & Book Value

CompanyAnnual RevenuePrice/SalesCashflowPrice/CashBook ValuePrice/Book
Altimmune, Inc. stock logo
ALT
Altimmune
$430K1,167.21N/AN/A$2.75 per share2.57
Amryt Pharma plc stock logo
AMYT
Amryt Pharma
$222.54M4.22$0.98 per share14.98$5.58 per share2.63
Athersys, Inc. stock logo
ATHX
Athersys
$146K1.90N/AN/A($1.33) per share0.00
Avid Bioservices, Inc. stock logo
CDMO
Avid Bioservices
$140.94M3.06$0.16 per share41.56$3.03 per share2.25
Prothena Co. plc stock logo
PRTA
Prothena
$91.37M12.09N/AN/A$10.46 per share1.97

Profitability & Earnings

CompanyNet IncomeEPSTrailing P/E RatioForward P/E RatioP/E GrowthNet MarginsReturn on Equity (ROE)Return on Assets (ROA)Next Earnings Date
Altimmune, Inc. stock logo
ALT
Altimmune
-$88.45M-$1.65N/AN/AN/A-20,780.75%-44.77%-40.72%5/9/2024 (Estimated)
Amryt Pharma plc stock logo
AMYT
Amryt Pharma
$1M-$0.06N/A735.00N/A-8.19%1.70%0.75%N/A
Athersys, Inc. stock logo
ATHX
Athersys
-$72.53M-$2.03N/AN/AN/AN/A-223.03%N/A
Avid Bioservices, Inc. stock logo
CDMO
Avid Bioservices
$560K-$0.17N/AN/A-8.12%-5.18%-2.16%4/29/2024 (Estimated)
Prothena Co. plc stock logo
PRTA
Prothena
-$147.03M-$2.80N/AN/AN/A-160.91%-24.84%-20.24%5/2/2024 (Estimated)

Latest CDMO, ALT, ATHX, AMYT, and PRTA Earnings

DateQuarterCompanyConsensus EstimateReported EPSBeat/MissGap EPSRevenue EstimateActual RevenueDetails
3/27/2024Q4 2023
Altimmune, Inc. stock logo
ALT
Altimmune
-$0.35-$0.33+$0.02-$0.12N/A$0.04 million
2/15/2024Q4 2023
Prothena Co. plc stock logo
PRTA
Prothena
-$1.23-$1.26-$0.03-$1.26$2.15 million$0.32 million    

Dividends

CompanyAnnual PayoutDividend Yield3-Year Dividend GrowthPayout RatioYears of Consecutive Growth
Altimmune, Inc. stock logo
ALT
Altimmune
N/AN/AN/AN/AN/A
Amryt Pharma plc stock logo
AMYT
Amryt Pharma
N/AN/AN/AN/AN/A
Athersys, Inc. stock logo
ATHX
Athersys
N/AN/AN/AN/AN/A
Avid Bioservices, Inc. stock logo
CDMO
Avid Bioservices
N/AN/AN/AN/AN/A
Prothena Co. plc stock logo
PRTA
Prothena
N/AN/AN/AN/AN/A

Debt

CompanyDebt-to-Equity RatioCurrent RatioQuick Ratio
Altimmune, Inc. stock logo
ALT
Altimmune
N/A
17.26
17.26
Amryt Pharma plc stock logo
AMYT
Amryt Pharma
0.64
1.57
0.94
Athersys, Inc. stock logo
ATHX
Athersys
N/A
0.06
0.06
Avid Bioservices, Inc. stock logo
CDMO
Avid Bioservices
0.81
1.35
0.85
Prothena Co. plc stock logo
PRTA
Prothena
N/A
11.24
11.24

Ownership

Institutional Ownership

CompanyInstitutional Ownership
Altimmune, Inc. stock logo
ALT
Altimmune
78.05%
Amryt Pharma plc stock logo
AMYT
Amryt Pharma
71.31%
Athersys, Inc. stock logo
ATHX
Athersys
19.35%
Avid Bioservices, Inc. stock logo
CDMO
Avid Bioservices
97.16%
Prothena Co. plc stock logo
PRTA
Prothena
97.08%

Insider Ownership

CompanyInsider Ownership
Altimmune, Inc. stock logo
ALT
Altimmune
4.10%
Amryt Pharma plc stock logo
AMYT
Amryt Pharma
5.66%
Athersys, Inc. stock logo
ATHX
Athersys
0.03%
Avid Bioservices, Inc. stock logo
CDMO
Avid Bioservices
2.39%
Prothena Co. plc stock logo
PRTA
Prothena
28.10%

Miscellaneous

CompanyEmployeesShares OutstandingFree FloatOptionable
Altimmune, Inc. stock logo
ALT
Altimmune
5970.89 million67.99 millionOptionable
Amryt Pharma plc stock logo
AMYT
Amryt Pharma
2,02063.96 million60.34 millionNot Optionable
Athersys, Inc. stock logo
ATHX
Athersys
2461.72 million61.70 millionNo Data
Avid Bioservices, Inc. stock logo
CDMO
Avid Bioservices
36563.24 million61.73 millionOptionable
Prothena Co. plc stock logo
PRTA
Prothena
17353.72 million38.63 millionOptionable

CDMO, ALT, ATHX, AMYT, and PRTA Headlines

SourceHeadline
Prothena (NASDAQ:PRTA) Reaches New 1-Year Low at $20.32Prothena (NASDAQ:PRTA) Reaches New 1-Year Low at $20.32
marketbeat.com - April 24 at 1:57 PM
Zacks Research Brokers Increase Earnings Estimates for Prothena Co. plc (NASDAQ:PRTA)Zacks Research Brokers Increase Earnings Estimates for Prothena Co. plc (NASDAQ:PRTA)
americanbankingnews.com - April 18 at 5:46 AM
Prothena (NASDAQ:PRTA) Hits New 12-Month Low at $21.31Prothena (NASDAQ:PRTA) Hits New 12-Month Low at $21.31
americanbankingnews.com - April 18 at 4:50 AM
Prothena reports potential AL amyloidosis treatmentProthena reports potential AL amyloidosis treatment
investing.com - April 17 at 1:23 AM
Prothena (NASDAQ:PRTA) Reaches New 1-Year Low at $21.31Prothena (NASDAQ:PRTA) Reaches New 1-Year Low at $21.31
marketbeat.com - April 16 at 11:02 AM
Financial Comparison: Prothena (NASDAQ:PRTA) and China Health Industries (OTCMKTS:CHHE)Financial Comparison: Prothena (NASDAQ:PRTA) and China Health Industries (OTCMKTS:CHHE)
americanbankingnews.com - April 16 at 2:40 AM
Prothena Announces Review on Birtamimab Mechanism of Action and Pharmacological Characteristics Published in Leukemia & LymphomaProthena Announces Review on Birtamimab Mechanism of Action and Pharmacological Characteristics Published in Leukemia & Lymphoma
businesswire.com - April 15 at 4:05 PM
Leerink Partnrs Weighs in on Prothena Co. plcs Q1 2024 Earnings (NASDAQ:PRTA)Leerink Partnrs Weighs in on Prothena Co. plc's Q1 2024 Earnings (NASDAQ:PRTA)
marketbeat.com - April 12 at 6:08 AM
Prothena (NASDAQ:PRTA) Trading Up 3.7%Prothena (NASDAQ:PRTA) Trading Up 3.7%
marketbeat.com - April 11 at 2:49 PM
Prothena (NASDAQ:PRTA) Stock Rating Reaffirmed by Cantor FitzgeraldProthena (NASDAQ:PRTA) Stock Rating Reaffirmed by Cantor Fitzgerald
marketbeat.com - April 10 at 2:17 PM
Prothena (NASDAQ:PRTA) Hits New 12-Month Low at $21.91Prothena (NASDAQ:PRTA) Hits New 12-Month Low at $21.91
marketbeat.com - April 10 at 10:44 AM
Prothena (NASDAQ:PRTA) Stock Price Down 3%Prothena (NASDAQ:PRTA) Stock Price Down 3%
marketbeat.com - April 4 at 5:28 PM
Prothena (NASDAQ:PRTA) Sets New 12-Month Low at $23.41Prothena (NASDAQ:PRTA) Sets New 12-Month Low at $23.41
marketbeat.com - April 3 at 12:47 PM
Prothena (NASDAQ:PRTA) Shares Gap Down to $26.15Prothena (NASDAQ:PRTA) Shares Gap Down to $26.15
marketbeat.com - April 2 at 11:19 AM
Prothena Co. plc (NASDAQ:PRTA) Given Average Rating of "Moderate Buy" by BrokeragesProthena Co. plc (NASDAQ:PRTA) Given Average Rating of "Moderate Buy" by Brokerages
marketbeat.com - April 1 at 4:15 AM
Prothena (NASDAQ:PRTA) Trading Down 2.3%Prothena (NASDAQ:PRTA) Trading Down 2.3%
marketbeat.com - March 28 at 4:33 PM
Prothena Co. plc (NASDAQ:PRTA) Shares Purchased by SG Americas Securities LLCProthena Co. plc (NASDAQ:PRTA) Shares Purchased by SG Americas Securities LLC
marketbeat.com - March 25 at 5:41 AM
Demystifying Prothena Corp: Insights From 8 Analyst ReviewsDemystifying Prothena Corp: Insights From 8 Analyst Reviews
markets.businessinsider.com - March 13 at 3:52 PM
Piper Sandler Reaffirms Their Buy Rating on Prothena (PRTA)Piper Sandler Reaffirms Their Buy Rating on Prothena (PRTA)
markets.businessinsider.com - March 7 at 6:13 PM
Prothena to Participate in Upcoming Healthcare ConferencesProthena to Participate in Upcoming Healthcare Conferences
businesswire.com - March 5 at 4:05 PM
Prothena Appoints David Ford to Newly Created Chief People Officer PositionProthena Appoints David Ford to Newly Created Chief People Officer Position
finance.yahoo.com - March 4 at 8:23 PM
Prothena Corporation plc (PRTA)Prothena Corporation plc (PRTA)
finance.yahoo.com - March 1 at 2:50 PM
Prothena: Alzheimers Data Update In 2024 Could Move The NeedleProthena: Alzheimer's Data Update In 2024 Could Move The Needle
seekingalpha.com - February 23 at 12:31 PM
Prothena Announces Appointment of Daniel G. Welch as Director and Chair DesignateProthena Announces Appointment of Daniel G. Welch as Director and Chair Designate
pharmiweb.com - February 21 at 8:48 PM

New MarketBeat Followers Over Time

Media Sentiment Over Time

Top Headlines

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Company Descriptions

Altimmune logo

Altimmune

NASDAQ:ALT
Altimmune, Inc., a clinical stage biopharmaceutical company, focuses on developing treatments for obesity and liver diseases. The company's lead product candidate, pemvidutide, a GLP-1/glucagon dual receptor agonist that is in Phase 2 trial for the treatment of obesity and metabolic dysfunction-associated steatohepatitis. It is also developing HepTcell, an immunotherapeutic product candidate, which is in Phase 2 clinical trial for patients chronically infected with the hepatitis B virus. The company was formerly known as Vaxin Inc. and changed its name to Altimmune, Inc. in September 2015. Altimmune, Inc. was founded in 1997 is headquartered in Gaithersburg, Maryland.
Amryt Pharma logo

Amryt Pharma

NASDAQ:AMYT
Amryt Pharma plc, a commercial-stage biopharmaceutical company, focuses on acquiring, developing, and commercializing various treatments to help improve the lives of patients with rare and orphan diseases. The company provides metreleptin, an adjunct to diet as replacement therapy to treat the complications of leptin deficiency in patients with congenital or acquired generalized lipodystrophy; oral octreotide, a long-term maintenance therapy in acromegaly patients; and lomitapide, an adjunct to a low-fat diet and other lipid-lowering medicinal products for adults with the Homozygous familial Hypercholesteraemia. Its development candidates include Oleogel-S10 for the cutaneous manifestations of Junctional and Dystrophic Epidermolysis Bullosa (EB), a rare and distressing genetic skin disorder affecting young children and adults; and AP103, a pre-clinical gene therapy for patients with dystrophic EB. The company sells its products in the Americas, Europe, and the Middle East. Amryt Pharma plc was founded in 2015 and is headquartered in Dublin, Ireland.
Athersys logo

Athersys

NASDAQ:ATHX
Athersys, Inc., a biotechnology company, focuses on the research and development activities in the field of regenerative medicine. Its clinical development programs are focused on treating neurological conditions, cardiovascular diseases, inflammatory and immune disorders, and pulmonary and other conditions. The company's lead platform product includes MultiStem cell therapy, an allogeneic stem cell product for the treatment of patients suffering from neurological damage from an ischemic stroke, as well as for acute respiratory distress syndrome, trauma complications, HSC transplant support, and other indications. It also develops MultiStem cell therapy to promote tissue repair and healing for animal patients. The company has license and collaboration agreements with Healios K.K. to develop and commercialize MultiStem cell therapy for ischemic stroke, acute respiratory distress syndrome, and ophthalmological indications, as well as for the treatment of liver, kidney, pancreas, and intestinal tissue diseases; and the University of Minnesota to develop MultiStem cell therapy platform. The company was founded in 1995 and is headquartered in Cleveland, Ohio.
Avid Bioservices logo

Avid Bioservices

NASDAQ:CDMO
Avid Bioservices, Inc., a contract development and manufacturing organization, provides process development and current good manufacturing practices (CGMP) clinical and commercial manufacturing services of biologics for the biotechnology and biopharmaceutical industries. The company offers various services, including clinical and commercial drug substance manufacturing, bulk packaging, release and stability testing, and regulatory submission and support. It also provides various process development services, such as upstream and downstream development and optimization, analytical methods development, cell line development, testing, and characterization. The company was formerly known as Peregrine Pharmaceuticals, Inc. and changed its name to Avid Bioservices, Inc. in January 2018. Avid Bioservices, Inc. was incorporated in 1981 and is headquartered in Tustin, California.
Prothena logo

Prothena

NASDAQ:PRTA
Prothena Corporation plc, a late-stage clinical biotechnology company, focuses on discovery and development of novel therapies to treat diseases caused by protein dysregulation in the United States. The company is involved in developing birtamimab, an investigational humanized antibody that is in Phase III clinical trial for the treatment of AL amyloidosis; Prasinezumab, a humanized monoclonal antibody, for the treatment of Parkinson's disease and other related synucleinopathies which is in Phase IIb clinical trial; NNC6019 that is in Phase lI clinical trial for the treatment of ATTR amyloidosis; and BMS-986446 and PRX012, which is in Phase I clinical trial for the treatment of Alzheimer's disease. Its discovery and preclinical programs include PRX123, a dual Aß-Tau vaccine for the treatment and prevention of Alzheimer's disease; and PRX019 for the treatment of neurogenerative diseases, as well as TDP-43 for the treatment of amyotrophic lateral sclerosis. Prothena Corporation plc has a license, development, and commercialization agreement with F. Hoffmann-La Roche Ltd. and Hoffmann-La Roche Inc. to develop and commercialize antibodies that target a-synuclein, including prasinezumab; and a collaboration agreement with Bristol-Myers Squibb to develop and commercialize antibodies targeting tau, TDP-43. The company was incorporated in 2012 and is based in Dublin, Ireland.