Boston Scientific

BSX on NYSE. Boston Scientific sells medical devices to hospitals, doctors, and healthcare providers. Market value $61.4bn.

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.

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
5.9%fair

For every $100 of what the whole company costs, it produced $5.90 of spare cash in the past 12 months. A savings account pays about $4.

Price to profit
past 12 months to June 2026
17.7×full

You pay 17.7 years of operating profit for the business. The average large US company costs around 18.

Return on capital
five annual reports to December 2025
6.4%five-year median

Each dollar kept in the business earns 6 cents a year. Above 10 is good.

Quality score: 88 of 100. Price score: 88 of 100. Our list needs 70 on quality and 60 on price.

$42.40 a share, at its 1-year low

Over the past year the price has ranged from $41.94 to $105.65.

Pays no dividend

Prices from Monday’s close (5 October).

Five years of cash, in billions

1.3
0.9
1.8
2.6
3.7
3.6
2021202220232024202512 monthsto Jun '26
Revenue
$11.9bn$12.7bn$14.2bn$16.7bn$20.1bn
Operating margin
10.1%13.0%16.5%15.5%18.0%
Debt to equity
0.550.510.470.490.47
Shares outstanding
1.43bn1.46bn1.47bn1.48bn1.45bn

Health checks

  • Free cash flow positive5 of 5 years
  • Accounting looks honest (Beneish)Nothing unusual
  • Financial strength (Piotroski)7 of 8 checks we could run
  • Profit backed by cash (accruals)Yes
  • Debt0.47× equity
  • Revenue growth, five yearsStrong, 15.2% a year
  • Buying back its own sharesRoughly flat

The quarter to June 2026

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

  • Sales: $5.4 billion last quarter, up 8% on a year ago.
  • Profit: $907 million, up 14% on a year ago.
  • It keeps 20 cents of each $1 of sales as operating profit, up from 17 cents a year earlier.
  • Spare cash over the past 12 months: $3.6 billion, up from $3.5 billion.
  • 1% fewer shares than a year ago. Each share owns a bit more of the company.
  • Debt is $12.1 billion more than cash, up from $11.1 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$4.2bn
December 2024$4.6bn
March 2025$4.7bn
June 2025$5.1bn
September 2025$5.1bn
December 2025$5.3bn
March 2026$5.2bn
June 2026$5.4bn
Profit by quarter
Profit by quarter
Quarter toAmount
September 2024$469m
December 2024$565m
March 2025$674m
June 2025$797m
September 2025$755m
December 2025$672m
March 2026$1.3bn
June 2026$907m

From the company's quarterly reports to the SEC.

Dates

Next results (estimated)
21 October 2026
Last annual report (10-K)
17 February 2026
Next quarterly (estimated, 10-Q)
2 November 2026

Who owns it

11 long-term investors we follow own it, up from 10 last quarter. 1,474 funds in all.

Jun '25
Dec '25
Jun '26

Sold out this quarter

Largest holders overall

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

Big holders and activists

3 investors own more than 5%.

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

What insiders did

In the last 12 months, 5 insiders bought $10m of shares on the open market. 4 sold $24m, $24m of it under preset trading plans.

Cluster buy4 insiders bought within 30 days (31 July 2026 to 25 August 2026).
  • Morano Susan E
    Director
    Bought
    Date
    25 August 2026
    Shares
    2,040
    Price
    $49.22
    Value
    $100,408
  • Habiger David C
    Director
    Bought
    Date
    5 August 2026
    Shares
    2,100
    Price
    $47.59
    Value
    $99,937
  • Habiger David C
    Director
    Bought
    Date
    4 August 2026
    Shares
    140
    Price
    $48.59
    Value
    $6,802
  • Habiger David C
    Director
    Bought
    Date
    3 August 2026
    Shares
    1,042
    Price
    $48.07
    Value
    $50,084
  • Mahoney Michael F
    Chairman, President & CEO, Director
    Bought
    Date
    3 August 2026
    Shares
    186,240
    Price
    $48.33
    Value
    $9m
  • LUDWIG EDWARD J
    Director
    Bought
    Date
    31 July 2026
    Shares
    5,000
    Price
    $45.48
    Value
    $227,400
  • Pegus Cheryl
    Director
    Bought
    Date
    20 May 2026
    Shares
    1,770
    Price
    $56.49
    Value
    $99,987
  • LUDWIG EDWARD J
    Director
    Bought
    Date
    20 May 2026
    Shares
    3,580
    Price
    $56.68
    Value
    $202,914
  • Habiger David C
    Director
    Bought
    Date
    20 May 2026
    Shares
    2,250
    Price
    $55.92
    Value
    $125,820
  • Habiger David C
    Director
    Bought
    Date
    19 May 2026
    Shares
    2,200
    Price
    $56.95
    Value
    $125,290

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 17 Feb 2026, plus the 10-Q filed 3 Aug 2026 and 12 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.

  • Changes in tax laws, unfavorable resolution of tax contingencies, or exposure to additional income tax liabilities could have a material impact on our financial condition, results of operations and/or liquidity.

    Could happen
    We are subject to certain U.S. tariffs that are currently subject to legal challenge before the U.S. Supreme Court. The timing and outcome of this litigation are uncertain, and the Court’s decision could result in the modification, invalidation, or continuation of such tariffs. Any modification of existing tariffs, or the introduction of new U.S. tariffs under alternative authorities, on imports from the countries where we do business for an extended period and without specific exemptions for our products, and any reciprocal tariffs or other reactions by other countries thereto, could have a material adverse impact on our financial condition, results of operations and cash flows. In addition, while we have paid tariffs that could potentially be subject to refund depending on the outcome of the litigation, there can be no assurance that any such refund would be realized or, if realized, the timing thereof. Any of these developments could have a material adverse effect on our financial condition, results of operations and cash flow.
    Read more
  • Changes in tax laws, unfavorable resolution of tax contingencies, or exposure to additional income tax liabilities could have a material impact on our financial condition, results of operations and/or liquidity.

    Could happen
    Many countries where we do business have implemented into their national laws, a global minimum effective tax rate of 15% based on the Pillar Two framework issued by the Organization for Economic Cooperation and Development (OECD). Other countries are considering enacting laws consistent with the Pillar Two rules, while others have yet to announce their intention to adopt. The United States has not enacted the Pillar Two global minimum tax and on January 5, 2026, the OECD released new Administrative Guidance that introduced two new safe harbors which would effectively exempt US-based multinational companies and their subsidiaries from certain elements of the OECD global minimum tax framework beginning in 2026. However, these safe harbors must now be legislated domestically by each framework member country in accordance with their own process and timelines. We expect that, if ultimately enacted into law in the relevant countries, the new safe harbors would be beneficial to our tax rate from continuing operations. However, Pillar Two remains enacted law and significant uncertainty exists regarding the implementation of the January 5th guidance as well as the interpretation of the existing Pillar Two rules, whether such rules will be implemented consistently across taxing jurisdictions, how such rules interact with existing national tax laws and whether such rules are consistent with existing tax treaty obligations. Accordingly, the final adoption, implementation, and interpretation of Pillar Two across all jurisdictions where we do business could have a material adverse impact on our financial condition, results of operations and cash flows.
    Read more

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

It's near its lowest price in a year. The deep dive tells you if that's a bargain or a warning.

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What a finished deep dive looks like

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.