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Compare stocks with our powerful stock comparison tool. Analyze fundamentals, price performance, and key financial indicators to make informed investment decisions. Our tool lets you compare up to ten stocks side by side based on Performance Charts, Price & Volume, MarketRank™, Analyst Ratings, Sales & Book Value, Profitability & Earnings, Dividends, Debt, Ownership, Headlines, and more. Simply enter up to ten stock symbols (e.g., BAC, JPM, WFC, C, GS) to get started and uncover top investment opportunities.

CompanyCurrent Price50-Day Moving Average52-Week RangeMarket CapBetaAvg. VolumeToday's Volume
GSK PLC Sponsored ADR stock logo
GSK
GSK
$51.38
+0.0%
$53.86
$35.45
$61.69
$104.26B0.384.18 million shs3.15 million shs
Merck & Co., Inc. stock logo
MRK
Merck & Co., Inc.
$122.55
+0.1%
$116.05
$75.40
$125.14
$302.33B0.188.53 million shs14.75 million shs
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Compare Price Performance

Company1-Day Performance7-Day Performance30-Day Performance90-Day Performance1-Year Performance
GSK PLC Sponsored ADR stock logo
GSK
GSK
0.00%+3.46%-5.59%-13.28%+32.79%
Merck & Co., Inc. stock logo
MRK
Merck & Co., Inc.
0.00%+10.05%+9.58%-0.87%+57.94%
CompanyCurrent Price50-Day Moving Average52-Week RangeMarket CapBetaAvg. VolumeToday's Volume
GSK PLC Sponsored ADR stock logo
GSK
GSK
$51.38
+0.0%
$53.86
$35.45
$61.69
$104.26B0.384.18 million shs3.15 million shs
Merck & Co., Inc. stock logo
MRK
Merck & Co., Inc.
$122.55
+0.1%
$116.05
$75.40
$125.14
$302.33B0.188.53 million shs14.75 million shs
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Compare Price Performance

Company1-Day Performance7-Day Performance30-Day Performance90-Day Performance1-Year Performance
GSK PLC Sponsored ADR stock logo
GSK
GSK
0.00%+3.46%-5.59%-13.28%+32.79%
Merck & Co., Inc. stock logo
MRK
Merck & Co., Inc.
0.00%+10.05%+9.58%-0.87%+57.94%
CompanyConsensus Rating ScoreConsensus RatingConsensus Price Target% Upside from Current Price
GSK PLC Sponsored ADR stock logo
GSK
GSK
1.90
Reduce$53.003.15% Upside
Merck & Co., Inc. stock logo
MRK
Merck & Co., Inc.
2.68
Moderate Buy$128.184.59% Upside

Current Analyst Ratings Breakdown

Latest MRK and GSK Analyst Ratings

DateCompanyBrokerageActionRatingPrice TargetDetails
5/15/2026
Merck & Co., Inc. stock logo
MRK
Merck & Co., Inc.
DowngradeHold (C+)Hold (C)
5/6/2026
Merck & Co., Inc. stock logo
MRK
Merck & Co., Inc.
Initiated CoverageNeutral$125.00
5/1/2026
GSK PLC Sponsored ADR stock logo
GSK
GSK
UpgradeHold (C+)Buy (B)
5/1/2026
Merck & Co., Inc. stock logo
MRK
Merck & Co., Inc.
Reiterated RatingHold (C+)
5/1/2026
Merck & Co., Inc. stock logo
MRK
Merck & Co., Inc.
Lower Price TargetOverweight$150.00 ➝ $145.00
4/13/2026
Merck & Co., Inc. stock logo
MRK
Merck & Co., Inc.
Boost Price TargetBuy$130.00 ➝ $145.00
4/6/2026
Merck & Co., Inc. stock logo
MRK
Merck & Co., Inc.
Boost Price TargetOverweight$125.00 ➝ $135.00
3/30/2026
Merck & Co., Inc. stock logo
MRK
Merck & Co., Inc.
Reiterated RatingOutperform$142.00
3/20/2026
Merck & Co., Inc. stock logo
MRK
Merck & Co., Inc.
Boost Price TargetNeutral$120.00 ➝ $125.00
3/19/2026
GSK PLC Sponsored ADR stock logo
GSK
GSK
DowngradeBuy (B-)Hold (C+)
3/17/2026
Merck & Co., Inc. stock logo
MRK
Merck & Co., Inc.
UpgradeStrong SellHold
(Data available from 5/25/2023 forward. View 10+ years of historical ratings with our analyst ratings screener.)
CompanyAnnual RevenuePrice/SalesCashflowPrice/CashBook ValuePrice/Book
GSK PLC Sponsored ADR stock logo
GSK
GSK
$43.07B2.42$6.00 per share8.56$11.57 per share4.44
Merck & Co., Inc. stock logo
MRK
Merck & Co., Inc.
$65.01B4.66$11.43 per share10.72$18.60 per share6.59
CompanyNet IncomeEPSTrailing P/E RatioForward P/E RatioP/E GrowthNet MarginsReturn on Equity (ROE)Return on Assets (ROA)Next Earnings Date
GSK PLC Sponsored ADR stock logo
GSK
GSK
$7.54B$3.8513.3510.022.6317.82%44.28%11.49%7/28/2026 (Estimated)
Merck & Co., Inc. stock logo
MRK
Merck & Co., Inc.
$18.25B$3.5534.5212.532.7613.59%27.55%10.73%8/4/2026 (Estimated)

Latest MRK and GSK Earnings

DateQuarterCompanyConsensus EstimateReported EPSBeat/MissGap EPSRevenue EstimateActual RevenueDetails
4/30/2026Q1 2026
Merck & Co., Inc. stock logo
MRK
Merck & Co., Inc.
-$1.47-$1.28+$0.19-$1.72$15.85 billion$16.29 billion
CompanyAnnual PayoutDividend Yield5-Year Annualized Dividend GrowthPayout RatioYears of Consecutive Growth
GSK PLC Sponsored ADR stock logo
GSK
GSK
$1.813.52%-7.86%47.01%N/A
Merck & Co., Inc. stock logo
MRK
Merck & Co., Inc.
$3.402.77%+5.75%95.77%14 Years

Latest MRK and GSK Dividends

AnnouncementCompanyPeriodAmountYieldEx-Dividend DateRecord DatePayable Date
4/29/2026
GSK PLC Sponsored ADR stock logo
GSK
GSK
quarterly$0.443.71%5/15/20265/15/20267/9/2026
1/1/2100
GSK PLC Sponsored ADR stock logo
GSK
GSK
quarterly$0.42064.3%8/15/20258/15/202510/9/2025
(Data available from 1/1/2013 forward)
CompanyDebt-to-Equity RatioCurrent RatioQuick Ratio
GSK PLC Sponsored ADR stock logo
GSK
GSK
0.80
0.79
0.52
Merck & Co., Inc. stock logo
MRK
Merck & Co., Inc.
1.02
1.30
1.06

Institutional Ownership

CompanyInstitutional Ownership
GSK PLC Sponsored ADR stock logo
GSK
GSK
15.74%
Merck & Co., Inc. stock logo
MRK
Merck & Co., Inc.
76.07%

Insider Ownership

CompanyInsider Ownership
GSK PLC Sponsored ADR stock logo
GSK
GSK
10.00%
Merck & Co., Inc. stock logo
MRK
Merck & Co., Inc.
0.17%
CompanyEmployeesShares OutstandingFree FloatOptionable
GSK PLC Sponsored ADR stock logo
GSK
GSK
66,8412.03 billion1.83 billionOptionable
Merck & Co., Inc. stock logo
MRK
Merck & Co., Inc.
75,0002.47 billion2.47 billionOptionable

Recent News About These Companies

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LSV Asset Management Cuts Stake in Merck & Co., Inc. $MRK

New MarketBeat Followers Over Time

Media Sentiment Over Time

GSK stock logo

GSK NYSE:GSK

$51.38 +0.00 (+0.01%)
Closing price 05/22/2026 03:59 PM Eastern
Extended Trading
$51.49 +0.11 (+0.21%)
As of 05/22/2026 07:33 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 Massive. Learn more.

GSK plc, together with its subsidiaries, engages in the research, development, and manufacture of vaccines, and specialty and general medicines to prevent and treat disease in the United Kingdom, the United States, and internationally. It operates through two segments, Commercial Operations and Total R&D. The company offers shingles, meningitis, respiratory syncytial virus, flu, polio, influenza, and pandemic vaccines. It also provides medicines for HIV, oncology, respiratory/immunology, and other specialty medicine products, as well as inhaled medicines for asthma and chronic obstructive pulmonary disease, and antibiotics for infections. It has a collaboration agreement with CureVac to develop mRNA-based influenza vaccines, and with Wave Life Sciences and Elsie Biotechnologies, Inc for oligonucleotide platform development. The company was formerly known as GlaxoSmithKline plc and changed its name to GSK plc in May 2022. GSK plc was founded in 1715 and is headquartered in Brentford, the United Kingdom.

Merck & Co., Inc. stock logo

Merck & Co., Inc. NYSE:MRK

$122.55 +0.14 (+0.11%)
Closing price 05/22/2026 03:59 PM Eastern
Extended Trading
$122.52 -0.02 (-0.02%)
As of 05/22/2026 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 Massive. 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.