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CompanyCurrent Price50-Day Moving Average52-Week RangeMarket CapBetaAvg. VolumeToday's Volume
Altimmune, Inc. stock logo
ALT
Altimmune
$5.58
-3.5%
$5.11
$3.55
$11.16
$429.74M1.132.83 million shs2.11 million shs
Cyanotech Co. stock logo
CYAN
Cyanotech
$0.32
-20.0%
$3.01
$2.37
$6.29
$2.29M-0.113,483 shs10,600 shs
Merck & Co., Inc. stock logo
MRK
Merck & Co., Inc.
$76.08
+1.7%
$83.46
$73.31
$134.63
$190.99B0.4312.45 million shs15.00 million shs
OKYO Pharma Limited stock logo
OKYO
OKYO Pharma
$1.48
+6.5%
$1.33
$0.81
$1.74
$50.08M-0.38120,654 shs16,422 shs
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Compare Price Performance

Company1-Day Performance7-Day Performance30-Day Performance90-Day Performance1-Year Performance
Altimmune, Inc. stock logo
ALT
Altimmune
0.00%-0.18%+22.50%-12.40%-37.09%
Cyanotech Co. stock logo
CYAN
Cyanotech
-19.98%-23.79%+11.30%-19.37%+10.23%
Merck & Co., Inc. stock logo
MRK
Merck & Co., Inc.
0.00%+0.26%-2.38%-8.35%-42.25%
OKYO Pharma Limited stock logo
OKYO
OKYO Pharma
0.00%+2.07%+21.31%+35.16%-0.67%
CompanyOverall ScoreAnalyst's OpinionShort Interest ScoreDividend StrengthESG ScoreNews and Social Media SentimentCompany OwnershipEarnings & Valuation
Altimmune, Inc. stock logo
ALT
Altimmune
2.5075 of 5 stars
3.51.00.00.02.63.30.6
Cyanotech Co. stock logo
CYAN
Cyanotech
N/AN/AN/AN/AN/AN/AN/AN/A
Merck & Co., Inc. stock logo
MRK
Merck & Co., Inc.
4.9992 of 5 stars
3.35.05.03.93.42.53.8
OKYO Pharma Limited stock logo
OKYO
OKYO Pharma
1.5487 of 5 stars
3.53.00.00.00.01.70.0
CompanyConsensus Rating ScoreConsensus RatingConsensus Price Target% Upside from Current Price
Altimmune, Inc. stock logo
ALT
Altimmune
3.00
Buy$20.20262.01% Upside
Cyanotech Co. stock logo
CYAN
Cyanotech
0.00
N/AN/AN/A
Merck & Co., Inc. stock logo
MRK
Merck & Co., Inc.
2.55
Moderate Buy$109.1943.52% Upside
OKYO Pharma Limited stock logo
OKYO
OKYO Pharma
3.00
Buy$7.00372.97% Upside

Current Analyst Ratings Breakdown

Latest ALT, MRK, CYAN, and OKYO Analyst Ratings

DateCompanyBrokerageActionRatingPrice TargetDetails
5/14/2025
Merck & Co., Inc. stock logo
MRK
Merck & Co., Inc.
Citigroup
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Reiterated RatingBuy ➝ Neutral$115.00 ➝ $84.00
5/5/2025
OKYO Pharma Limited stock logo
OKYO
OKYO Pharma
HC Wainwright
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Reiterated RatingBuy ➝ Buy$7.00 ➝ $7.00
4/22/2025
Merck & Co., Inc. stock logo
MRK
Merck & Co., Inc.
Cantor Fitzgerald
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Initiated CoverageNeutral$85.00
4/17/2025
Merck & Co., Inc. stock logo
MRK
Merck & Co., Inc.
Guggenheim
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Reiterated RatingBuy ➝ Buy$115.00 ➝ $115.00
4/3/2025
Altimmune, Inc. stock logo
ALT
Altimmune
HC Wainwright
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Reiterated RatingBuy ➝ Buy$12.00 ➝ $12.00
3/18/2025
Altimmune, Inc. stock logo
ALT
Altimmune
HC Wainwright
Subscribe to MarketBeat All Access for the recommendation accuracy rating
Reiterated RatingBuy ➝ Buy$12.00 ➝ $12.00
3/14/2025
Altimmune, Inc. stock logo
ALT
Altimmune
William Blair
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Reiterated RatingMarket Perform
3/3/2025
Altimmune, Inc. stock logo
ALT
Altimmune
HC Wainwright
Subscribe to MarketBeat All Access for the recommendation accuracy rating
Reiterated RatingBuy ➝ Buy$12.00 ➝ $12.00
2/28/2025
Altimmune, Inc. stock logo
ALT
Altimmune
William Blair
Subscribe to MarketBeat All Access for the recommendation accuracy rating
Initiated CoverageMarket Perform
2/18/2025
Merck & Co., Inc. stock logo
MRK
Merck & Co., Inc.
Deutsche Bank Aktiengesellschaft
Subscribe to MarketBeat All Access for the recommendation accuracy rating
DowngradeBuy ➝ Hold$128.00 ➝ $105.00
2/18/2025
OKYO Pharma Limited stock logo
OKYO
OKYO Pharma
HC Wainwright
Subscribe to MarketBeat All Access for the recommendation accuracy rating
Reiterated RatingBuy ➝ Buy$7.00 ➝ $7.00
(Data available from 5/18/2022 forward. View 10+ years of historical ratings with our analyst ratings screener.)
CompanyAnnual RevenuePrice/SalesCashflowPrice/CashBook ValuePrice/Book
Altimmune, Inc. stock logo
ALT
Altimmune
$20K21,486.91N/AN/A$2.75 per share2.03
Cyanotech Co. stock logo
CYAN
Cyanotech
$23.07M0.10N/AN/A$1.33 per share0.24
Merck & Co., Inc. stock logo
MRK
Merck & Co., Inc.
$63.92B2.99$2.64 per share28.82$14.85 per share5.12
OKYO Pharma Limited stock logo
OKYO
OKYO Pharma
N/AN/AN/AN/A($0.20) per shareN/A
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-$1.34N/AN/AN/A-199,076.92%-55.81%-50.60%N/A
Cyanotech Co. stock logo
CYAN
Cyanotech
-$5.27M-$0.66N/AN/A-19.50%-44.71%-19.12%N/A
Merck & Co., Inc. stock logo
MRK
Merck & Co., Inc.
$17.12B$6.8711.307.680.7726.67%45.35%17.36%7/29/2025 (Estimated)
OKYO Pharma Limited stock logo
OKYO
OKYO Pharma
-$16.83MN/A0.00N/AN/AN/AN/AN/AN/A

Latest ALT, MRK, CYAN, and OKYO Earnings

DateQuarterCompanyConsensus EstimateReported EPSBeat/MissGap EPSRevenue EstimateActual RevenueDetails
5/13/2025Q1 2025
Altimmune, Inc. stock logo
ALT
Altimmune
-$0.35-$0.26+$0.09-$0.26$0.00 million$0.01 million
4/24/2025Q1 2025
Merck & Co., Inc. stock logo
MRK
Merck & Co., Inc.
$2.16$2.22+$0.06$2.01$15.59 billion$15.53 billion
2/27/2025Q4 2024
Altimmune, Inc. stock logo
ALT
Altimmune
-$0.34-$0.33+$0.01-$0.33$0.00 million$0.01 million
CompanyAnnual PayoutDividend Yield3-Year Dividend GrowthPayout RatioYears of Consecutive Growth
Altimmune, Inc. stock logo
ALT
Altimmune
N/AN/AN/AN/AN/A
Cyanotech Co. stock logo
CYAN
Cyanotech
N/AN/AN/AN/AN/A
Merck & Co., Inc. stock logo
MRK
Merck & Co., Inc.
$3.244.26%+5.73%47.16%14 Years
OKYO Pharma Limited stock logo
OKYO
OKYO Pharma
N/AN/AN/AN/AN/A
CompanyDebt-to-Equity RatioCurrent RatioQuick Ratio
Altimmune, Inc. stock logo
ALT
Altimmune
N/A
16.87
16.87
Cyanotech Co. stock logo
CYAN
Cyanotech
0.11
1.06
0.28
Merck & Co., Inc. stock logo
MRK
Merck & Co., Inc.
0.79
1.36
1.15
OKYO Pharma Limited stock logo
OKYO
OKYO Pharma
N/A
0.28
N/A

Institutional Ownership

CompanyInstitutional Ownership
Altimmune, Inc. stock logo
ALT
Altimmune
78.05%
Cyanotech Co. stock logo
CYAN
Cyanotech
24.40%
Merck & Co., Inc. stock logo
MRK
Merck & Co., Inc.
76.07%
OKYO Pharma Limited stock logo
OKYO
OKYO Pharma
2.97%

Insider Ownership

CompanyInsider Ownership
Altimmune, Inc. stock logo
ALT
Altimmune
4.10%
Cyanotech Co. stock logo
CYAN
Cyanotech
29.10%
Merck & Co., Inc. stock logo
MRK
Merck & Co., Inc.
0.13%
OKYO Pharma Limited stock logo
OKYO
OKYO Pharma
40.46%
CompanyEmployeesShares OutstandingFree FloatOptionable
Altimmune, Inc. stock logo
ALT
Altimmune
5077.01 million68.21 millionOptionable
Cyanotech Co. stock logo
CYAN
Cyanotech
957.16 million5.07 millionNot Optionable
Merck & Co., Inc. stock logo
MRK
Merck & Co., Inc.
69,0002.51 billion2.53 billionOptionable
OKYO Pharma Limited stock logo
OKYO
OKYO Pharma
733.84 million20.15 millionNot Optionable

Recent News About These Companies

OKYO Pharma confirms stability of drug candidate
OKYO Pharma seeks FDA Fast Track for eye pain drug

New MarketBeat Followers Over Time

Media Sentiment Over Time

Top Headlines

View All Headlines
Altimmune stock logo

Altimmune NASDAQ:ALT

$5.58 -0.20 (-3.46%)
Closing price 05/16/2025 04:00 PM Eastern
Extended Trading
$5.48 -0.10 (-1.79%)
As of 05/16/2025 07:55 PM Eastern
Extended trading is trading that happens on electronic markets outside of regular trading hours. This is a fair market value extended hours price provided by Polygon.io. Learn more.

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.

Cyanotech stock logo

Cyanotech NASDAQ:CYAN

Cyanotech Corp. engages in the cultivation, production, and sale of natural products derived from microalgae for the health and human nutrition markets worldwide. Its products include BioAstin Hawaiian Astaxanthin, a dietary antioxidant, which is used as a human dietary supplement and dietary ingredient to support and maintain the body's natural inflammatory response, enhance skin, and support eye, joint, and immune health; and Hawaiian Spirulina Pacifica, a nutrient-rich dietary supplement that is used for extra energy, a strengthened immune system, cardiovascular benefits, and as a source of antioxidant carotenoids. The company was founded by Gerald R. Cysewski in 1983 and is headquartered in Kailua-Kona, HI.

Merck & Co., Inc. stock logo

Merck & Co., Inc. NYSE:MRK

$76.08 +1.28 (+1.71%)
Closing price 05/16/2025 03:59 PM Eastern
Extended Trading
$75.72 -0.36 (-0.47%)
As of 05/16/2025 07:59 PM Eastern
Extended trading is trading that happens on electronic markets outside of regular trading hours. This is a fair market value extended hours price provided by Polygon.io. Learn more.

Merck & Co., Inc. is a health care company, which engages in the provision of health solutions through its prescription medicines, vaccines, biologic therapies, animal health, and consumer care products. It operates through the following segments: Pharmaceutical, Animal Health, and Other. The Pharmaceutical segment includes human health pharmaceutical and vaccine products. The Animal Health segment discovers, develops, manufactures, and markets animal health products, such as pharmaceutical and vaccine products, for the prevention, treatment and control of disease in livestock, and companion animal species. The Other segment consists of sales for the non-reportable segments of healthcare services. The company was founded in 1891 and is headquartered in Rahway, NJ.

OKYO Pharma stock logo

OKYO Pharma NASDAQ:OKYO

$1.48 +0.09 (+6.47%)
Closing price 05/16/2025 03:49 PM Eastern
Extended Trading
$1.49 +0.01 (+0.68%)
As of 05/16/2025 07:30 PM Eastern
Extended trading is trading that happens on electronic markets outside of regular trading hours. This is a fair market value extended hours price provided by Polygon.io. Learn more.

OKYO Pharma Limited, a clinical-stage biopharmaceutical company, engages in developing therapeutics for patients suffering from inflammatory eye diseases and ocular pain in the United Kingdom. Its lead preclinical product candidate is OK-101, which is in Phase II clinical trials for the treatment of dry eye disease. The company is also developing OK-201, a bovine adrenal medulla, lipidated-peptide preclinical analogue candidate for the treatment of neuropathic chronic pain. The company was incorporated in 2007 and is headquartered in London, the United Kingdom.