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BSX

BSX Institutional Buying & Selling Tracker

Boston Scientific CORP

-$45.6B

Net Activity

Institutions Holding

1662

Popularity Rank

#189

Avg Weight

0.26%

Total Value

$85.7B

Ownership Trend

1662 institutions currently hold BSX, with 845 net buyers and 906 net sellers this quarter.

Institutional Moves

Institutional Moves (Q1 2026)

Neutral

Based on recent trading activity

Net Selling Institutions

906

Net Buying Institutions

845

Key Holders

Key Holders

Top 5 by Value

BI
BlackRock, Inc.
$8.3B
VC
Vanguard Capital Management LLC
$6.0B
FL
FMR LLC
$4.7B
SS
State Street CORP
$4.3B
JC
Jpmorgan Chase & Co
$2.1B

Top 5 by Conviction

BG
Bollard Group LLC
34.26%
EM
Edgewood Management LLC
3.09%
FC
Farallon Capital Management LLC
2.67%
VH
Vontobel Holding Ltd.
1.72%
PM
Primecap Management Co/ca/
1.61%
View all 1662 holding institutions

Across its top 20 institutional holders, BSX's holder base skews toward low-concentration, low-turnover investors on average (avg. concentration score 7/100, avg. turnover score 24/100).

Quarterly Activity

Recent Activity

+$44.0B

Total Buy Value

$68.2B

Total Sell Value

New buy172
Trim626
Add673
Sold out280

845

Net Buyers

906

Net Sellers

Game Theory Scenarios

Bearish— Distribution Signal

Institutions and Insiders Align in Bearish Divestment

Signal Basis

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.

Smart Money Convergence

BSX does not currently show a 13F-and-insider convergence signal — its insider confidence score is 0/100, below the threshold this product uses to flag combined buying pressure.

13F data as of 2026-06-30 quarterly filings. Note: many large institutions file close to the 45-day post-quarter deadline, so early-quarter flow figures can shift substantially as more filings arrive.

Insider Trading (Form 4)

90d confidence

0

unique buyers

—

buy value

data as of 2026-07-18

12-Month Buy/Sell Activity

Feb 25
May 25
Aug 25
Nov 25
BuySell
ActionInsiderTitleDateValue
SellMahoney Michael FChairman, President & CEO2026-02-02$14.93M
SellMahoney Michael FChairman, President & CEO2026-02-02$113K
SellButcher Arthur CEVP& Grp Pres, MedSurg & APAC2025-12-01$1.76M
SellZane Ellen MDirector2025-11-06$1.27M
SellFitzgerald Joseph MichaelEVP & Group Pres, Cardiology2025-11-03$1.69M
SellFitzgerald Joseph MichaelEVP & Group Pres, Cardiology2025-11-03$2.92M
SellFitzgerald Joseph MichaelEVP & Group Pres, Cardiology2025-11-03$363K
SellZane Ellen MDirector2025-10-28$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

CUSIP

101137107

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.

Related Stocks

Same Sector

Other stocks in the same GICS sector

JNJ

Johnson & Johnson

Institutions Holding

4,603

Total reported value

$438.8B

1460 institutions currently hold both BSX and this stock

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LLY

Eli Lilly & Co

Institutions Holding

4,337

Total reported value

$730.5B

1514 institutions currently hold both BSX and this stock

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ABBV

Abbvie INC

Institutions Holding

4,024

Total reported value

$283.9B

1420 institutions currently hold both BSX and this stock

View detail

Trending Institutional Adds

The most-added stocks by 13F institutions this quarter

MSFT

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Institutions Holding

6,150

Total reported value

$2.1T

3245 13F institutions increased their position this quarter

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AMZN

Amazon.com INC

Institutions Holding

5,957

Total reported value

$1.5T

3028 13F institutions increased their position this quarter

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NVDA

Nvidia CORP

Institutions Holding

5,764

Total reported value

$3.0T

2743 13F institutions increased their position this quarter

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