GuruTrack
BSX

BSX

BOSTON SCIENTIFIC CORP

Data as of 2026 Q1 (03-31) · 13F snapshot

Summary
BOSTON SCIENTIFIC CORP (BSX) is held by 13 tracked hedge-fund managers, a combined reported value of ~$2.09B; the largest are Ken Griffin, David Einhorn, Izzy Englander. This quarter: 3 added, 4 trimmed, 1 closed. 20 members of Congress have disclosed STOCK Act trades. Data as of 2026 Q1, from public SEC 13F filings, delayed up to ~45 days.
Attention · HighThis quarter · Cooling
Gurus holding13
Congress trades20
Price$43.58vs quarter-end-30.55%
Sectors1
This quarter's moves
New0
Added3
Trimmed / sold5
Top holderKen Griffin
David EinhornNew large stake
Value $252.69M9.8% of portfolio28,077,1512009 Q4
Steven CohenAdd
Value $231.38M0.4% of portfolio3,687,3152026 Q1
Dan LoebHold
Value $226.10M2.6% of portfolio5,000,0002019 Q4
Renaissance TechnologiesAdd
Value $197.79M0.3% of portfolio3,152,0052026 Q1
Steven CohenCALL—
Value $132.46M— of portfolio2,110,9002026 Q1
Ken GriffinCALL—
Value $101.15M— of portfolio1,611,9002026 Q1
Ken GriffinPUT—
Value $57.13M— of portfolio910,4002026 Q1
Izzy EnglanderCALL—
Value $52.25M— of portfolio832,6002026 Q1
David TepperTrim
Value $30.09M0.5% of portfolio787,5002020 Q3
Izzy EnglanderPUT—
Value $10.40M— of portfolio165,8002026 Q1
George SorosHold
Value $10.09M0.3% of portfolio100,0002025 Q1
Steven CohenPUT—
Value $2.02M— of portfolio32,2002026 Q1

Insider Trading

Officers · directors · Form 4

  • Jonathan Monson

    EVP and CFO

    Sell$43.5K
    1,010 @ $43.06Traded 2026-07-01Filed 2026-07-02

  • Jonathan Monson

    EVP and CFO

    Buy
    2,087 @ $0.00Traded 2026-07-01Filed 2026-07-02

  • Michael F Mahoney

    Chairman, President & CEO

    Sell
    386,755 @ $0.00Traded 2026-05-28Filed 2026-06-01

  • Cheryl Pegus

    Director

    Buy$100.0K
    1,770 @ $56.49Traded 2026-05-20Filed 2026-05-21

  • Edward J Ludwig

    Director

    Buy$202.9K
    3,580 @ $56.68Traded 2026-05-20Filed 2026-05-21

  • David C Habiger

    Director

    Buy$125.8K
    2,250 @ $55.92Traded 2026-05-19Filed 2026-05-21

  • David C Habiger

    Director

    Buy$125.3K
    2,200 @ $56.95Traded 2026-05-19Filed 2026-05-21

  • Cheryl Pegus

    Director

    Buy
    1,281Traded 2026-05-07Filed 2026-05-11

  • David S Wichmann

    Director

    Buy
    3,800 @ $0.00Traded 2026-05-07Filed 2026-05-11

  • Ellen M Zane

    Director

    Buy
    3,800 @ $0.00Traded 2026-05-07Filed 2026-05-11

  • Cathy R Smith

    Director

    Buy
    2,209Traded 2026-05-07Filed 2026-05-11

  • Cheryl Pegus

    Director

    Buy
    3,800Traded 2026-05-07Filed 2026-05-11

  • Cathy R Smith

    Director

    Buy
    3,800Traded 2026-05-07Filed 2026-05-11

  • Susan E Morano

    Director

    Buy
    3,800 @ $0.00Traded 2026-05-07Filed 2026-05-11

  • Christophe Pierre Weber

    Director

    Buy
    2,660Traded 2026-05-07Filed 2026-05-11

  • Christophe Pierre Weber

    Director

    Buy
    1,767 @ $0.00Traded 2026-05-07Filed 2026-05-11

  • David C Habiger

    Director

    Buy
    3,800 @ $0.00Traded 2026-05-07Filed 2026-05-11

  • Edward J Ludwig

    Director

    Buy
    3,800 @ $0.00Traded 2026-05-07Filed 2026-05-11

  • Jessica L Mega

    Director

    Buy
    3,800 @ $0.00Traded 2026-05-07Filed 2026-05-11

  • Susan E Morano

    Director

    Buy
    1,281 @ $0.00Traded 2026-05-07Filed 2026-05-11

  • Christophe Pierre Weber

    Director

    Buy
    1,140 @ $0.00Traded 2026-05-07Filed 2026-05-11

  • Padraig Andrew O'Connor

    EVP, Global Operations

    Buy
    1,802 @ $0.00Traded 2026-05-02Filed 2026-05-04

  • Arthur C Butcher

    EVP& Grp Pres, MedSurg & APAC

    Sell$56.9K
    1,007 @ $56.50Traded 2026-05-02Filed 2026-05-04

  • Arthur C Butcher

    EVP& Grp Pres, MedSurg & APAC

    Buy
    2,102 @ $0.00Traded 2026-05-02Filed 2026-05-04

Insider transactions are public SEC Form 4 disclosures (company officers, directors, 10% owners), for research only — not investment advice.

Data from public SEC 13F & STOCK Act filings, delayed up to ~45 days, partial holdings only — for research, not investment advice.