Merck

MRK on NYSE. Merck sells medicines, vaccines, and animal health products to wholesalers, hospitals, doctors and governments. Market value $344.3bn.

Watch this stockFree. We tell you when something changes.

Price checks use the past 12 months to June 2026. Quality checks use five annual reports, the latest for the year to December 2025.

The company doesn't report operating profit, so we work it out from pre-tax profit and interest.

Recent profit includes a big one-time charge, so we price the company excluding that charge.

Should I look at this?

Worth a closer look

Read what could go wrong

This is not advice. Check the numbers below.

Compare with another stock

Cash yield
past 12 months to June 2026
4.6%fair

For every $100 of what the whole company costs, it produced $4.59 of spare cash in the past 12 months. A savings account pays about $4.

Price to profit
past 12 months to June 2026, without the one-off
18.5×full

You pay 18.5 years of operating profit for the business. The average large US company costs around 18.

Return on capital
five annual reports to December 2025
20.3%five-year median

Each dollar kept in the business earns 20 cents a year. Above 10 is good.

Quality score: 100 of 100. Price score: 68 of 100. Our list needs 70 on quality and 60 on price.

$141.94 a share, 73% above its 1-year low

Over the past year the price has ranged from $82.01 to $156.92.

Dividend: 2.3% a year

Paid every year for at least 5 years

Prices from Tuesday’s close (6 October).

Five years of cash, in billions

8.7
14.7
9.1
18.1
12.4
16.1
2021202220232024202512 monthsto Jun '26
Revenue
$48.7bn$59.3bn$60.1bn$64.2bn$65.0bn
Operating margin
30.2%29.4%5.0%33.0%34.5%
Debt to equity
0.870.670.930.800.94
Shares outstanding
2.54bn2.53bn2.53bn2.48bn2.47bn

Health checks

  • Free cash flow positive5 of 5 years
  • Accounting looks honest (Beneish)Nothing unusual
  • Financial strength (Piotroski)4 of 8 checks we could run
  • Profit backed by cash (accruals)Yes
  • Debt0.94× equity
  • Revenue growth, five yearsSlow, 9.4% a year
  • Buying back its own sharesYes, 3% fewer since 2021

The quarter to June 2026

How the business did, compared with the same quarter a year earlier.

  • Sales: $16.6 billion last quarter, up 5% on a year ago.
  • A loss of $1.3 billion, after a profit of $4.4 billion a year ago.
  • Spare cash over the past 12 months: $16.1 billion, up from $14.7 billion.
  • 2% fewer shares than a year ago. Each share owns a bit more of the company.
  • Debt is $47.1 billion more than cash, up from $27.4 billion a year ago.
  • Sales grew on a year ago in each of the last 4 quarters.
Sales by quarter
Sales by quarter
Quarter toAmount
September 2024$16.7bn
December 2024$15.6bn
March 2025$15.5bn
June 2025$15.8bn
September 2025$17.3bn
December 2025$16.4bn
March 2026$16.3bn
June 2026$16.6bn
Profit by quarter
Profit by quarter
Quarter toAmount
September 2024$3.2bn
December 2024$3.7bn
March 2025$5.1bn
June 2025$4.4bn
September 2025$5.8bn
December 2025$3.0bn
March 2026-$4.2bn
June 2026-$1.3bn

From the company's quarterly reports to the SEC.

Dates

Next results (estimated)
29 October 2026
Last annual report (10-K)
24 February 2026
Next quarterly (estimated, 10-Q)
6 November 2026

Who owns it

29 long-term investors we follow own it, unchanged from 29 last quarter. 3,830 funds in all.

Jun '25
Dec '25
Jun '26
Largest holders overall

From 13F filings for the quarter ended 30 June 2026.

Big holders and activists

1 investor owns more than 5%.

From Schedule 13D and 13G filings: anyone owning more than 5% must file one.

What insiders did

No insider bought shares on the open market in the last 12 months. 11 sold $72m.

  • Guindo Chirfi
    EVP, Access, Policy & Comms
    Sold
    Date
    13 August 2026
    Shares
    10,000
    Price
    $135.00
    Value
    $1m
  • Zachary Jennifer
    EVP, General Counsel
    Sold
    Date
    12 August 2026
    Shares
    80,315
    Price
    $133.46
    Value
    $11m
  • DeLuca Richard R.
    EVP&Pres, Merck Animal Heallth
    Sold
    Date
    12 August 2026
    Shares
    11,699
    Price
    $131.63
    Value
    $2m
  • DeLuca Richard R.
    EVP&Pres, Merck Animal Heallth
    Sold
    Date
    11 August 2026
    Shares
    12,837
    Price
    $131.76
    Value
    $2m
  • DeLuca Richard R.
    EVP&Pres, Merck Animal Heallth
    Sold
    Date
    10 August 2026
    Shares
    20,784
    Price
    $130.43
    Value
    $3m
  • DeLuca Richard R.
    EVP&Pres, Merck Animal Heallth
    Sold
    Date
    6 August 2026
    Shares
    6,050
    Price
    $130.38
    Value
    $788,773
  • Guindo Chirfi
    EVP, Access, Policy & Comms
    Sold
    Date
    6 August 2026
    Shares
    15,000
    Price
    $131.00
    Value
    $2m
  • Maraldo David R.
    EVP & Pres. MMD
    Sold
    Date
    5 August 2026
    Shares
    18,706
    Price
    $128.72
    Value
    $2m
  • Williams David Michael
    EVP,Chief Info&Digital Officer
    Sold
    Date
    5 August 2026
    Shares
    52,847
    Price
    $128.77
    Value
    $7m
  • Guindo Chirfi
    Chief Marketing Officer
    Sold
    Date
    12 February 2026
    Shares
    10,000
    Price
    $121.46
    Value
    $1m

From Form 4 filings: insiders must report trades in their own company's shares within two days.

Warning signs in its filings

Problems the company itself reported to the SEC, in its own words.

None of the warning signs we check for were found.

We look for five warning signs: doubt it can keep going, weak checks on its own accounts, a notice that its past accounts can't be relied on, a change of auditor, and one customer bringing in a big share of sales. We don't check lawsuits, investigations or debt yet.

We checked the auditor's report, internal controls, restatement notices, auditor changes and big customers in the 10-K filed 24 Feb 2026, plus the 10-Q filed 7 Aug 2026 and 4 later 8-Ks.

A 10-K is the yearly report every US company files with the SEC. An 8-K is a short notice of a big event.

What could go wrong

Cheap for a reason is the question the numbers cannot answer.

Whether the price already reflects the risks is what the deep dive is for.

What changed in the risks this year

Companies must list what could hurt them each year. These are the parts that changed since last year’s report.

  • Unfavorable or uncertain economic conditions, together with cost-reduction measures being taken by the U.S. and other countries, could negatively affect the Company’s operating results.

    Could happen
    In addition, it is possible that as a consequence of the MFN Agreement, certain of the Company’s products may not be launched in the MFN Countries or their launch may be delayed and as a result, the MFN Countries may take actions that adversely impact the Company.
  • The Company faces continued pricing pressure with respect to its products in the public and private sectors.

    Could happen
    Also, as noted above, in December 2025, the Company entered into the MFN Agreement with the U.S. government pursuant to which the Company will provide key products through a direct-to-patient program at affordable prices for eligible patients in the U.S. This currently includes Januvia , Janumet , and Janumet XR , and will be expanded in the future to include enlicitide decanoate pending FDA approval. The Company also agreed to offer its existing medicines at discounted prices to Medicaid, excluding certain products. In addition, the Company has agreed that products launched during the term of the MFN Agreement (with certain exceptions) will be subject to “most-favored-nation” pricing in reference to prices for such products in the MFN Countries.
    Read more
  • The Company’s business in China experienced significantly lower sales of Gardasil/Gardasil 9 in 2025 and the Company expects that sales of Gardasil/Gardasil 9 in China will not materially increase in 2026. As a consequence of the reduced sales of Gardasil/Gardasil 9 , the Company’s business in China declined significantly.

    Already happened
    The Company’s business in China experienced significantly lower sales of Gardasil/Gardasil 9 in 2025. Due to above normal inventory levels at the Company’s commercialization partner in China, the Company made a decision to pause shipments to China beginning in February 2025 and has not resumed shipments to date. The Company will not resume shipments until inventory levels return to normal levels and it cannot predict when shipments to China will resume nor the levels of sales that the Company will achieve and as a result, the Company expects that sales of Gardasil/Gardasil 9 in China will not materially increase in 2026. In June 2025, a nine-valent HPV vaccine produced by a local manufacturer received regulatory approval in China for use in females 9-45 years of age.
    Read more
  • The health care industry in the U.S. has been, and will continue to be, subject to increasing regulation and political action.

    In 2022, Congress passed the IRA, which made significant changes to how drugs are covered and paid for under the Medicare program, including the creation of financial penalties for drugs whose prices rise faster than the rate of inflation, redesign of the Medicare Part D program to require manufacturers to bear more of the liability for certain drug benefits, which has taken effect in 2025, and government price setting for certain Medicare Part D drugs, starting in 2026, and Medicare Part B drugs starting in 2028. Furthermore, government price setting may also impact pricing in the private market, negatively affecting the Company’s performance. As noted in Item 1. “Competition and the Health Care Environment,” in 2023, HHS selected Januvia for the first year of the IRA’s price setting program, which resulted in a government set price becoming effective on January 1, 2026. In 2025, HHS selected Janumet and Janumet XR for government price setting, the set price for which will become effective on January 1, 2027. In addition, in January 2026, HHS announced that Lenvima has been selected for government price setting, the set price for which will become effective on January 1, 2028. Furthermore, the Company expects that in 2027 HHS will include Keytruda in a subsequent selection of products to undergo IRA price setting, with such price to become effective on January 1, 2029 and the Company expects that, as a result, U.S. sales of Keytruda will decline materially after that time.
    Read more
  • • The Company’s products, including products in development, cannot be marketed unless the Company obtains and maintains regulatory…

    Could happen
    • The Company’s products, including products in development, cannot be marketed unless the Company obtains and maintains regulatory approval or authorization.

Read it in the annual report

The deep dive

Everything above is arithmetic on public filings. The deep dive reads the last ten years of annual reports, the proxy statements, and the earnings calls, then argues the case the way Buffett, Klarman, and Hohn would, and checks every claim against the source.

  • What the business is worth, as a range, and the margin of safety at today’s price
  • Prices to start buying, buy, and buy hard
  • The three things that would make this a mistake
  • Every number footnoted to the filing it came from
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Not advice. Numbers on this page come from SEC filings and are updated each night; prices are updated again after the US market closes. The five-year figures are rounded.