Sifting through countless of stocks in the Pharmaceuticals industry can be tedious, and sometimes two stocks are just too similar to judge which is the better investment. If you’re on the fence about investing in Merck & Co., Inc. or Teva Pharmaceutical Industries Limited because you’re not sure how they measure up, it’s important to compare them on a few factors before making your decision.

Read on to learn how Merck & Co., Inc. and Teva Pharmaceutical Industries Limited compare based on key financial metrics to determine which better meets your investment needs.

About Merck & Co., Inc. and Teva Pharmaceutical Industries Limited

Merck & Co., Inc. operates as a healthcare company worldwide. It offers human health pharmaceutical for various areas under the Keytruda, Keytruda Qlex, Welireg, Gardasil, ProQuad, M-M-R II, Varivax, Vaxneuvance, Capvaxive, RotaTeq, Pneumovax 23, Bridion, Prevymis, Dificid, Zerbaxa, Winrevair, Adempas/ Verquvo, Ohtuvayre, Lagevrio, Isentress/Isentress HD, Delstrigo, Pifeltro, Belsomra, Januvia, and Janumet brands. The company 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; and companion animal products under the Bravecto One-Month, Bravecto Injectable/Quantum, Bravecto TriUNO, Bravecto Plus, Sentinel Spectrum, Sentinel Flavor Tabs, Numelvi, Optimmune, Nobivac NXT, GilvetMab, Otomax, Mometamax, Mometamax Ultra, Posatex, Caninsulin/Vetsulin, Panacur, Safeguard, Regumate, Prestige, Scalibor/Exspot, Sure Petcare, and Home Again brands. It 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; 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. has strategic collaboration with Infinimmune, Inc. to discover and develop antibodies against multiple therapeutic targets. The company was founded in 1891 and is headquartered in Rahway, New Jersey.

Teva Pharmaceutical Industries Limited develops, manufactures, markets, and distributes generic and other medicines, and biopharmaceutical products in the United States, Europe, Israel, and internationally. It offers generic medicines in various dosage forms, such as tablets, capsules, injectables, inhalants, liquids, transdermal patches, ointments, and creams; sterile products, hormones, high-potency drugs, and cytotoxic substances in parenteral and solid dosage forms; and generic products with medical devices and combination products. The company also focuses on the central nervous system (CNS), respiratory, oncology, and other areas. It provides active pharmaceutical ingredients, as well as contract manufacturing services; and operates an out-licensing platform that offers a portfolio of products to other pharmaceutical companies. The company also offers BENDEKA and TREANDA injections for the treatment of chronic lymphocytic leukemia and indolent b-cell non-hodgkin’s lymphoma; COPAXONE, glatiramer acetate injection to treat patients with relapsing forms of multiple sclerosis; AJOVY for the preventive treatment of migraine in adults; AUSTEDO for the treatment of tardive dyskinesia, chorea associated with Huntington’s disease and tardive dyskinesia; UZEDY for the treatment of schizophrenia; QVAR RediHaler to treat asthma; BRALTUS, a long-acting muscarinic antagonist; CINQAIR/CINQAERO injection; DuoResp Spiromax budesonide and formoterol powder inhaler; AirDuo RespiClick fluticasone propionate and salmeterol inhalation powder; and ProAir RespiClick inhalation powder. It offers its OTC products under the SUDOCREM, NasenDuo, DICLOX FORTE, OLFEN Max, and FLEGAMINA brand names. The company has collaboration agreements with MedinCell S.A.; Sanofi; Alvotech; and Biolojic Design Ltd., as well as license agreement with MODAG GmbH. Teva Pharmaceutical Industries Limited was founded in 1901 and is based in Tel Aviv-Yafo, Israel.

Latest Pharmaceuticals and Merck & Co., Inc., Teva Pharmaceutical Industries Limited Stock News

As of September 1, 2026, Merck & Co., Inc. had a $369.7 billion market capitalization, compared to the Pharmaceuticals median of $654.2 million. Merck & Co., Inc.’s stock is up 44.1% in 2026, down 1% in the previous five trading days and up 78.15% in the past year.

Currently, Merck & Co., Inc.’s price-earnings ratio is 117.7. Merck & Co., Inc.’s trailing 12-month revenue is $66.6 billion with a 4.8% net profit margin. Year-over-year quarterly sales growth most recently was 5.1%. Analysts expect adjusted earnings to reach $2.747 per share for the current fiscal year. Merck & Co., Inc. currently has a 2.3% dividend yield.

As of September 1, 2026, Teva Pharmaceutical Industries Limited had a $42.2 billion market cap, putting it in the 92nd percentile of all stocks. Teva Pharmaceutical Industries Limited’s stock is up 20.1% in 2026, down 1.1% in the previous five trading days and up 96.9% in the past year.

Currently, Teva Pharmaceutical Industries Limited’s price-earnings ratio is 60.1. Teva Pharmaceutical Industries Limited’s trailing 12-month revenue is $17.3 billion with a 4.1% net profit margin. Year-over-year quarterly sales growth most recently was -0.8%. Analysts expect adjusted earnings to reach $2.143 per share for the current fiscal year. Teva Pharmaceutical Industries Limited does not currently pay a dividend.

How We Compare Merck & Co., Inc. and Teva Pharmaceutical Industries Limited Stock Grades

Stock evaluation requires access to huge amounts of data and the knowledge and time to sift through it all, make sense of financial ratios, read income statements and analyze recent stock movements. AAII created A+ Investor, a robust data suite that condenses data research in an actionable and customizable way suitable for investors of all knowledge levels, to help investors streamline and work through such data.

AAII’s proprietary stock grades come with A+ Investor. These offer intuitive A‐F grades for each of five key investing factors: value, growth, momentum, earnings estimate revisions and quality. Here, we’ll take a closer look at Merck & Co., Inc. and Teva Pharmaceutical Industries Limited’s stock grades to see how they measure up against one another.

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Merck & Co., Inc. and Teva Pharmaceutical Industries Limited Stock Value Grades

Company	Ticker	Value
Merck & Co., Inc.	MRK	F
Teva Pharmaceutical Industries Limited	TEVA	D

Successful stock investing involves buying low and selling high, so stock valuation is an important consideration for stock selection.

Buying stocks that are going to go up typically means buying stocks that are undervalued in the first place, although momentum investors may argue that point.

AAII’s A+ Investor Value Grade derives from a stock’s value score. The Value Score is the percentile rank of the average of the percentile ranks of the price-to-sales ratio, price-earnings ratio, enterprise-value-to-EBITDA (EV/EBITDA) ratio, shareholder yield, price-to-book-value ratio and price-to-free-cash-flow ratio. The score is variable, meaning it can consider all six ratios or, should any of the six ratios not be valid, the remaining ratios that are valid. To be assigned a Value Score, stocks must have a valid (non-null) ratio and corresponding ranking for at least two of the six valuation ratios.

Stocks with a Value Score from 81 to 100 are considered deep value, those with a score between 61 and 80 are a good value and so on.

Merck & Co., Inc. has a Value Score of 20, which is Ultra Expensive. Teva Pharmaceutical Industries Limited has a Value Score of 24, which is Expensive.

The Value Stock Winner: No Clear Winner

Neither Merck & Co., Inc. or Teva Pharmaceutical Industries Limited has a high enough value grade to be considered a “winner.” Investors who are considering these companies should do additional due diligence and research to see if either could be a good addition to their portfolio. It’s important to look at a wide range of financial metrics in order to determine if Merck & Co., Inc. or Teva Pharmaceutical Industries Limited is the better investment when it comes to value.

Merck & Co., Inc. and Teva Pharmaceutical Industries Limited’s Quality Grades

Company	Ticker	Quality
Merck & Co., Inc.	MRK	B
Teva Pharmaceutical Industries Limited	TEVA	B

Like the Value Grade, AAII’s A+ Investor Quality Grade comes from the percentile rank of key metrics. Specifically, the Quality Score is the percentile rank of the average of the percentile ranks of return on assets (ROA), return on invested capital (ROIC), gross profit relative to assets, buyback yield, change in total liabilities to assets, accruals, Z double prime bankruptcy risk (Z) score and the F-Score.

The score is variable, meaning it can consider all eight measures or, should any of the eight measures not be valid, the remaining measures that are valid. To be assigned a Quality Score, stocks must have a valid (non-null) measure and corresponding ranking for at least four of the eight quality measures.

The Quality Score is used to assess the underlying “quality” of a particular stock. A higher-quality stock possesses traits associated with upside potential and reduced downside risk. Backtesting of the Quality Grade shows that stocks with higher grades, on average, outperformed stocks with lower grades over the period of 1998 through 2019.

Stocks receive better grades (higher scores) for having higher scores for the quality subcomponents and worse grades (lower scores) for lower scores for the subcomponents.

Merck & Co., Inc. has a Quality Score of 80, which is Strong. Teva Pharmaceutical Industries Limited has a Quality Score of 74, which is Strong.

The Quality Grade Winner: It’s a Tie!

Looking at the Quality Grade breakdown above, both Merck & Co., Inc. and Teva Pharmaceutical Industries Limited have a grade of B. For investors who focus solely on a company’s overall quality, you will need to conduct further research into both companies to see if they are a good fit for your portfolio. As a good rule of thumb, you should always analyze multiple factors based on a wide range of metrics before choosing a company to invest in.

Merck & Co., Inc. and Teva Pharmaceutical Industries Limited’s Estimate Revisions Grades

Company	Ticker	Earnings Estimate
Merck & Co., Inc.	MRK	C
Teva Pharmaceutical Industries Limited	TEVA	D

Earnings estimate revisions scores consider the magnitude of a company’s earnings surprise in its last two reported fiscal quarters. Often, positive surprises beget further positive surprises‐or at least continued sales growth (the exact opposite is generally true, too).

Estimate revisions offer an indication of what analysts are thinking about the short-term prospects of a firm. Estimate revisions are based on the statistical significance of a firm’s last two quarterly earnings surprises and the percentage change in its consensus estimate for the current fiscal year over the past month and past three months.

Merck & Co., Inc. has a Earnings Estimate Score of 46, which is Neutral. Teva Pharmaceutical Industries Limited has a Earnings Estimate Score of 36, which is Negative.

The Earnings Estimate Revisions Stock Winner: No Clear Winner

Neither Merck & Co., Inc. or Teva Pharmaceutical Industries Limited has an Earnings Estimate Revisions Grade that could be considered a “winner.” Investors considering these companies should do additional due diligence and research to see if either could be a good addition to their portfolios. It’s important to look at a wide range of financial metrics in order to determine if Merck & Co., Inc. or Teva Pharmaceutical Industries Limited is the better investment when it comes to estimate revisions.

Other Merck & Co., Inc. and Teva Pharmaceutical Industries Limited Grades

In addition to Value, Estimate Revisions and Quality, A+ Investor also provides grades for Growth and Momentum.

Momentum grades help uncover stocks experiencing anomalously high rates of return; research finds that stocks with high relative levels of momentum tend to outperform, whereas those with low levels of momentum tend to continue underperforming.

Growth investing builds on the idea that stocks of companies exhibiting strong, consistent and prolonged growth outperform those of slower-growth companies. AAII measures growth through consistency of annual sales growth, five-year sales growth rankings adjusted for extreme levels, and consistency of positive annual cash from operations.

These 2 key factors, when combined with the above, provide a holistic view into a particular stock. Further, by joining A+ Investor you can see whether Merck & Co., Inc. and Teva Pharmaceutical Industries Limited pass any of our 60+ stock screens that have outperformed the market since their creation.

So, Which Is the Better Investment, Merck & Co., Inc. or Teva Pharmaceutical Industries Limited Stock?

Overall, Merck & Co., Inc. stock has a Value Score of 20, Estimate Revisions Score of 46 and Quality Score of 80.

Teva Pharmaceutical Industries Limited stock has a Value Score of 24, Estimate Revisions Score of 36 and Quality Score of 74.

Comparing Merck & Co., Inc. and Teva Pharmaceutical Industries Limited’s grades, scores and metrics can act as a solid basis to determine whether they may be a good investment or not. You’ll also want to look at your portfolio’s asset allocation as well as your risk tolerance and financial goals to see if either of these stocks would make a good fit for you. AAII can help you figure out which investments align with your individual needs and preferences.

Investors are encouraged to do their own due diligence and research. In this way, individuals can effectively become managers of their own assets‐without having to rely on others for financial independence. You can count on AAII for timeless articles on financial planning and stock-picking, unbiased research and actionable analysis.

A+ Investor adds to our qualitative teaching with a powerful data suite to help you whittle down investment choices to find stocks, exchange-traded funds (ETFs) or mutual funds that meet your needs.

AAII Disclaimer

We make no representations or warranties that any investor will, or is likely to, achieve profits similar to those shown, because past, hypothetical or simulated performance is not necessarily indicative of future results. Before making an investment decision, you should consider your circumstances and whether the information on our content is applicable to your situation. This information was prepared in good faith, and we accept no liability for any errors or omissions. The full disclaimer can be read here.