Avoid the stress of overpaying for a stock or missing an opportunity by using the right tools and insights to evaluate Merck & Co., Inc. before investing.

In this article, we go over a few key elements for understanding Merck & Co., Inc.’s stock price such as:

• Merck & Co., Inc.’s current stock price and volume
• Why Merck & Co., Inc.’s stock price changed recently
• Upgrades and downgrades for MRK from analysts
• MRK’s stock price momentum as measured by its relative strength

About Merck & Co., Inc. (MRK)

Before we jump into Merck & Co., Inc.’s stock price, history, target price and what caused it to recently rise, let’s take a look at some background.

Merck & Co., Inc. operates as a healthcare company worldwide. It operates through two segments, Pharmaceutical and Animal Health. The company offers human health pharmaceutical for various areas, including oncology, vaccines, hospital acute care, cardiovascular, virology, neuroscience, and diabetes under the Keytruda, Welireg, Gardasil, ProQuad, M-M-R II, Varivax, Vaxneuvance, RotaTeq, Pneumovax 23, Bridion, Dificid, Zerbaxa, Noxafil, Winrevair, Adempas, Verquvo, Lagevrio, Isentress/Isentress HD, Delstrigo, Pifeltro, Belsomra, Januvia, and Janumet brands. It also provides veterinary pharmaceuticals, vaccines and health management solutions and services, such as livestock products under the Nuflor, Bovilis/Vista, Bovilis Cryptium, Banamine, Estrumate, Matrix, Resflor, Zuprevo, Revalor, Safe-Guard, M+Pac, Porcilis, Circumvent, Nobilis/Innovax, Paracox and Coccivac, Exzolt, Slice, Imvixa, Clynav, Aquavac/Norvax, Aquaflor, Flexolt brands; Allflex Livestock Intelligence solutions for animal identification, monitoring and traceability; and companion animal products under the Bravecto One-Month, Bravecto Injectable/Quantum, Bravecto Plus, Sentinel Spectrum, Sentinel Flavor Tabs, Optimmune, Nobivac NXT, GilvetMab, Otomax, Mometamax, Mometamax Ultra, Posatex, Caninsulin/Vetsulin, Panacur, Regumate, Prestige, Scalibor/Exspot, Sure Petcare, and Home Again brands. The company has development and commercialization agreement for three of Daiichi Sankyo’s deruxtecan ADC candidates; AstraZeneca PLC to co-development and co-commercialize AstraZeneca’s Lynparza products for multiple cancer types, and Koselugo for multiple indications; licensed to develop, manufacture and commercialize LM-299, a novel investigational PD-1/VEGF bispecific antibody from LaNova; and collaboration agreement with Eisai Co., Ltd., Bayer AG, and Ridgeback Biotherapeutics LP, as well Moderna, Inc. Merck & Co., Inc. was founded in 1891 and is headquartered in Rahway, New Jersey.

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Merck & Co., Inc.’s Stock Price as of Market Close

As of May 12, 2025, 1:02 PM, CST, Merck & Co., Inc.’s stock price was $80.390.

Merck & Co., Inc. is up 5.82% from its previous closing price of $75.970.

During the last market session, Merck & Co., Inc.’s stock traded between $75.830 and $80.450. Currently, there are approximately 2,523.00 million shares outstanding for Merck & Co., Inc..

Merck & Co., Inc.’s price-earnings (P/E) ratio is currently at 11.0, which is low compared to the Pharmaceuticals industry median of 17.1. The price-earnings ratio gauges market expectation of future performance by relating a stock’s current share price to its earnings per share.

Merck & Co., Inc. Stock Price History

Merck & Co., Inc.’s (MRK) price is currently down 5.65% so far this month.

During the month of May, Merck & Co., Inc.’s stock price has reached a high of $84.710 and a low of $75.820.

Over the last year, Merck & Co., Inc. has hit prices as high as $134.630 and as low as $75.820. Year to date, Merck & Co., Inc.’s stock is down 19.19%.

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What Caused Merck & Co., Inc. Stock’s Price to Rise?

Stock prices are primarily based on seller supply and buyer demand. But have you ever wondered about what other factors affect a stock's price?

When an analyst changes their opinion of a stock by upgrading or downgrading their rating, it often leads to a sudden stock price adjustment. As of May 09, 2025, there were 12 analysts who downgraded Merck & Co., Inc.’s stock and 1 analyst who upgraded over the last month.

Additionally, you'll want to evaluate Merck & Co., Inc.’s financial health and valuation. Investors can use AAII's Value Grade, which combines six key valuation metrics like P/E and P/S ratios for a comprehensive analysis to conduct analysis on Merck & Co., Inc.’s valuation and financial health. This approach mitigates the limitations of single-metric evaluations.

Merck & Co., Inc.’s current valuation based on AAII’s Value Grade is a C, which means it is considered to be Average.

Learn how to evaluate stocks with AAII Grades and Scores with A+ Investor today.

Lastly, news and media coverage as well as recent press reports about the company or its industry may cause stock prices to fluctuate. You can check out the most recent news articles about Merck & Co., Inc. (MRK) by visiting AAII Stock Evaluator.

Relative Price Strength of Merck & Co., Inc.

Relative price strength measures a stock's performance against the market, helping investors identify stocks that are outperforming benchmarks.

For AAII’s Momentum Grade, a weighted relative price strength is calculated. Follow this link to learn more about the Momentum Grade.

As of May 09, 2025, Merck & Co., Inc. has a weighted four-quarter relative price strength of -12.50%, which translates to a Momentum Score of 21 and is considered to be Weak.

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Merck & Co., Inc. Stock Price: Bottom Line

As of May 12, 2025, Merck & Co., Inc.’s stock price is $80.390, which is up 5.82% from its previous closing price.

AAII advises against making stock decisions based solely on price or past returns. Instead, consider a variety of metrics, fundamentals, and analytics to evaluate a stock like Merck & Co., Inc. stock prices are influenced by market supply and demand and offer just a snapshot of a company's overall health.

Subscribing to AAII's A+ Investor provides access to comprehensive analytics and insights for confident investing.