Skip to content
Esta página está disponible en españolCambiar →
GestorLensSign up

#8 among the stocks most managers dropped in Q2 2026 →

Boston Scientific (BSX): which funds own it

Health Care →Data as of Jun 30, 2026 (Q2 2026) · updated on Nov 5, 2026

A 13F shows the portfolio at quarter-end and is filed up to 45 days later: these are not real-time positions and they may have changed.

Follow BSX for free
Share

Sections with a free account

26 concentrated managers hold it (−8 vs last quarter); combined they have held more shares for 2 quarters in a row (10 added, 7 trimmed). Its median weight in those portfolios is 0.8%. 5 officers or directors bought in 6 months.

Who owns Boston Scientific?

Holders reporting more than 5% of the shares to the SEC (Schedules 13D/13G): BlackRock, 7.6% (13G/A filed Apr 17, 2025) and Vanguard Capital Management, 7.5% (13G filed Apr 29, 2026). As of Jun 30, 2026, the largest holders reported on Form 13F were BlackRock (8.7% of the shares), Vanguard Capital Management (6.5%) and State Street (4.7%).

Which institutions hold the most Boston Scientific shares?

Per Form 13F filings as of Jun 30, 2026, as a share of all shares outstanding:

  1. 1. BlackRock: 8.7%
  2. 2. Vanguard Capital Management: 6.5%
  3. 3. State Street: 4.7%
  4. 4. Primecap Management: 3.4%
  5. 5. FMR: 3.1%
  6. 6. Geode Capital Management: 2.2%
  7. 7. Vanguard Portfolio Management: 2.0%
  8. 8. D. E. Shaw: 1.7%
  9. 9. Massachusetts Financial Services: 1.7%
  10. 10. JPMorgan Chase: 1.6%

How much of Boston Scientific do institutions own?

The 1,486 institutions that file 13F reported 89.4% of the shares as of Jun 30, 2026 (not counting 1 position with implausible figures).

Sources:13G/A by BlackRock (Apr 17, 2025) ↗13G by Vanguard Capital Management (Apr 29, 2026) ↗All of the company's proxy statements on EDGAR ↗

13F percentages divide the shares each institution reports by the shares outstanding on the cover of the company's latest report before the quarter end (Apr 29, 2026). Entities of the same group file separately and are not added up. We hold 13D and 13G filings made since Dec 23, 2024: a holder above 5% that has not filed since then does not appear here.

Boston Scientific revenue

Boston Scientific reported annual revenue of $20.07 billion for fiscal year 2025 (year ended December 31, 2025), according to its Form 10-K filed with the SEC (XBRL data).

Concentrated managers
26
All 13F: 1,486
Consensus
39/100
across 26 concentrated managersRanks by accumulation, portfolio weight and number of managers; it does not say more are buying than selling.
Price at Jun 30, 2026 (per 13F)
$42.68
-32.0% in the quarter · reported value ÷ shares, not the quote · See current quote ↗

Quarter flow (concentrated managers)

Change in managers (34 → 26): 7 opened · 16 exited · 1 more with no comparable data = −8

“No comparable data”: managers whose previous-quarter portfolio we cannot compare (first 13F, or they did not file that quarter), plus spin-offs and corporate exits (mergers, delistings). They change the count without being a clean buy or sale. It is a net figure: “more” when more of them enter the count than leave it, “fewer” when it is the other way round. Here: 1 entered with no comparable quarter.

Net flow in the quarter: −$295M (−6.9 M shares) · bought $251M and sold $546MShares concentrated managers added minus those they cut, valued at the 13F quarter-end implied price, not each trade's price. It is a different measure from the change in managers: the two can have opposite signs.

Accumulation: combined they have held more shares for 2 quarters in a row (10 added, 7 trimmed). It is the combined share count of those still holding it: one large buyer can outweigh many who trimmed.

The set of concentrated managers changed between quarters: with the set as it was then, 36 held it last quarter (the chart point); with today's set, 34 (the base for the change).

Concentrated managers holding it

Up to 15, sorted by position value. The percentage is the weight in each manager's portfolio.

Other relevant holders

Filers with $100M or more in the stock that do not count as concentrated managers because of their type: they are left out of the counts, the consensus and the accumulation.

Largest holders of BSX (all 13F filers)

The 10 13F filers with the most shares as of Jun 30, 2026, whatever their type (index firms usually come first). “Change”: shares added or cut versus the previous quarter, split-adjusted; “no data” = there is no comparable portfolio for the previous quarter (no filing, or a filing with its holdings under confidential treatment). “% of the company” only where shares outstanding are up to date. Entities of the same group file separately and some 13F filings include other managers: there may be double counting. With a free account: the top 25, the largest buyers and the largest sellers.

Held by institutions (13F)

Institutions (13F): 89.4% of the shares · top 10: 35.7% · in index firms: 31.4% of the institutional total

Share of the stock held by 13F filers

Q2 2026: 89.4%

93.3%89.4%
Q3 2021Q2 2026

Shares reported by the 1,486 13F filers as of Jun 30, 2026 (not counting 1 position with implausible figures), divided by the shares outstanding on the cover of the company's latest report (Apr 29, 2026). It is not all institutional ownership: only managers above $100M file a 13F, and it excludes short positions. Entities of the same group file separately and some 13F filings include other managers: there may be double counting. We only publish it where the figure is credible: not for ADRs, companies with more than one share class or stale shares-outstanding data.

Fundamentals

12-month figures to Sep 30, 2026 · balance sheet as of Sep 30, 2026.

Profitability
Operating margin
18.7%
Net margin
16.6%
ROE
13.7%
Growth
Revenue (TTM)
$21.1 bn
Revenue growth
8.9%
Net income (TTM)
$3.5 bn
Balance sheet
Net debt / EBITDA
2.1x
Free cash flow (TTM)
$3.3 bn
Quality vs sector
62/100

Figures from the statements the company filed with the SEC (10-K, 10-Q). Free cash flow = operating cash flow − capital expenditures; empty if the company does not report capex. “Quality vs sector”: 0 to 100, the average of its percentiles in ROE, operating margin, free-cash-flow margin, revenue and earnings growth and net debt / EBITDA (at least 3 needed) against companies in its sector above $300M. How each figure is calculated

Shares outstanding: buybacks and dilution

Diluted shares by fiscal year (split-adjusted)

2025: 1.49 bn

1.49 bn0
20162025
1 year
+0.6%
3 years
+3.8%
5 years
+5.5%
Buybacks (FY 2025)
no data
Share issuance
no data
Stock-based compensation
$299M1.5% of revenue
Dividends paid
no data

From the statements the company filed with the SEC (10-K). The change compares average diluted shares of each fiscal year, on today's basis: negative = it bought back more than it issued; positive = dilution. “No data” = the company does not report that item under a tag we can read; it does not mean zero.

Earnings quality and debt

Operating cash flow ÷ net income (12 months)
1.21
Interest coverage (operating income ÷ interest)
10.4 timesfiscal 2025
Debt due within 12 months
$1.0 bn1.71 times cash and investments

From the figures the company filed with the SEC. Cash flow over net income near or above 1 means earnings are collected in cash; far below, that part is accounting. Coverage says how many times operating income pays the latest fiscal year's interest. Maturities come from the debt note of the latest annual report, counted from its closing date. “No data” never means zero.

Insiders (Form 4)

Officers and directors who bought (6 m)
5
Amount (6 m)
$10.0M
CEO/CFO bought (12 m)
Yes

10% owners who bought (6 m): 0

Open-market purchases, excluding 10b5-1 plans. Officers and directors only; joint filers of the same purchase count as one. 10% owners with no role are shown separately. 0 = nobody bought; “no data” = we do not have its Form 4 filings.

Each of the company's Form 4 filings, on EDGAR ↗Latest trades, with date and filing →

Above 5% (13D/13G)

Disclosed stakes, with their amendments. A filing is not always a purchase: there are also reductions and changes of filing entity.

This list may be incomplete: we hold 13D and 13G filings made since Dec 23, 2024. A holder above 5% that has not filed anything since then is not shown here.

Above 5% over time (13D/13G)

Each holder with its filings in order. History since December 2024.

Flagged material events (8-K)

  • Sep 8, 2026Mediumfiling ↗

    Material cybersecurity incident (Item 1.05)

  • Jul 27, 2026Mediumfiling ↗

    Exit or restructuring costs (Item 2.05)

  • Oct 7, 2026Routinefiling ↗

    Change in directors or officers (Item 5.02)

    «Boston Scientific appoints Joseph M. Fitzgerald Executive Vice President and Chief Operating Officer»

  • Sep 23, 2026Routinefiling ↗

    Change in directors or officers (Item 5.02)

  • Feb 23, 2026Routinefiling ↗

    Change in directors or officers (Item 5.02)

    «Boston Scientific elects Cathy Smith and Christophe Weber to Board of Directors»

  • Feb 5, 2026Routinefiling ↗

    Change in directors or officers (Item 5.02)

  • Nov 19, 2025Routinefiling ↗

    Change in directors or officers (Item 5.02)

Alert items the company itself flagged in its 8-K filings with the SEC, most serious first. It is the form's label, with no interpretation from us: Item 5.02 covers routine appointments as well as a chief executive's departure; open the filing. The quoted headline is the original press release's.

All material events (8-K)

Earnings, agreements, financing, management changes and announcements from the last year, with a filter by type and a link to each filing.

Other Health Care stocks in managers' portfolios

Same sector and a similar number of concentrated managers holding them. It is a list to keep exploring, not a recommendation.

All of Health Care →

Follow BSX for free

If someone reports a 5%+ stake, we email you (if you turn it on). And when you come back, see whether concentrated managers got in or out. No credit card.

Follow BSX