Institutional holders recorded $45.6B net value outflow with 906 sellers vs 845 buyers, while insiders executed $15M in sales with zero buys over 90 days.

Confirmation

Further insider filings at the same pace and continued institutional net selling next quarter would confirm distribution.

Invalidation Risk

A surprise insider purchase or institutional net accumulation in the next 13F invalidates the bearish view.

The above is AI-generated from public regulatory filings and summarizes historical data only. It is not investment advice and should not be used as the basis for any buy or sell decision.

Insider Trading (Form 4)

90d confidence

unique buyers

—

buy value

data as of 2026-07-16

12-Month Buy/Sell Activity

Feb 25

May 25

Aug 25

Nov 25

BuySell

操作	內部人	職稱	交易日	金額
賣出	Mahoney Michael F	Chairman, President & CEO	2026-02-02	$14.93M
賣出	Mahoney Michael F	Chairman, President & CEO	2026-02-02	$113K
賣出	Butcher Arthur C	EVP& Grp Pres, MedSurg & APAC	2025-12-01	$1.76M
賣出	Zane Ellen M	Director	2025-11-06	$1.27M
賣出	Fitzgerald Joseph Michael	EVP & Group Pres, Cardiology	2025-11-03	$1.69M
賣出	Fitzgerald Joseph Michael	EVP & Group Pres, Cardiology	2025-11-03	$2.92M
賣出	Fitzgerald Joseph Michael	EVP & Group Pres, Cardiology	2025-11-03	$363K
賣出	Zane Ellen M	Director	2025-10-28	$297K

View all insider trades →

Form 144 Pre-Sale Notices

No Form 144 planned sale filings in the last 90 days

Beneficial Ownership (13D/13G)

No Schedule 13D/13G filings for this ticker

Material Events (8-K)

No Form 8-K filings for this ticker

FAQ

Who are the top institutional investors holding BOSTON SCIENTIFIC CORP (BSX)?

Major stakeholders currently include BlackRock, Inc. ($8.3B), Vanguard Capital Management LLC ($6.0B), FMR LLC ($4.7B). Based on the latest 13F filings, there are a total of 1662 tracked investment funds and institutions maintaining positions in BSX.

What is the overall institutional sentiment toward BSX recently?

Institutional sentiment appears Bearish (Net Selling). During the most recent reporting quarter, the stock experienced a net outflow of $45.6B, driven by 845 managers accumulating shares while 906 reduced their exposure.

Which institutions have been selling or reducing their BSX positions?

In the latest period, 626 funds trimmed their holdings, and 280 managers completely exited their positions. The aggregate reported sell value was $68.2B.

Are there any notable investors adding BSX to their portfolios?

Yes, buying activity remains notable. 172 institutions opened new positions in {ticker}, and 673 existing holders added to their shares. The total reported buy value for the quarter amounted to $44.0B.