Ticker · CUSIP 101137107

BSX

BOSTON SCIENTIFIC CORP
Healthcare·Medical Devices
···Share
Holders (tracked)
29
Combined shares
95,659,042
Combined value
$9.07B
Last close
$64.23
Quarter
2025Q4
Price · 1Y$64.23-30.89 (-32.47%)H $108.14 · L $61.28 · Avg Vol 10.4M
Congress buyCongress sell
$60.00$70.00$80.00$90.00$100.00$110.00VolJul 25Oct 25Jan 26Apr 26
Tracked holders · last 8 quarters
+5 vs previous quarter over the last 8.
29242024Q12025Q4
Price is -32.3% vs the avg quarter-end implied price across tracked holders.

SEC event timeline

30 events
  1. Paul Tudor Jones (Tudor Investment) opened position2026-02-17
    +732,838 shares · 2025Q4
    Position
  2. Ken Griffin (Citadel Advisors) trimmed2026-02-17
    −4,130,627 shares · 2025Q4
    Position
  3. D.E. Shaw & Co. added2026-02-17
    +2,338,849 shares · 2025Q4
    Position
  4. Stephen Mandel (Lone Pine Capital) opened position2026-02-17
    +201,703 shares · 2025Q4
    Position
  5. AQR Capital Management trimmed2026-02-17
    −74,106 shares · 2025Q4
    Position
  6. Andreas Halvorsen (Viking Global) trimmed2026-02-17
    −131,874 shares · 2025Q4
    Position
  7. Two Sigma Investments trimmed2026-02-17
    −60,237 shares · 2025Q4
    Position
  8. Izzy Englander (Millennium Mgmt) added2026-02-17
    +2,739,969 shares · 2025Q4
    Position
  9. Steve Cohen (Point72) added2026-02-17
    +803,510 shares · 2025Q4
    Position
  10. Ron Baron (Baron Capital / BAMCO) trimmed2026-02-17
    −23,000 shares · 2025Q4
    Position
  11. T. Rowe Price trimmed2026-02-17
    −920,040 shares · 2025Q4
    Position
  12. Wellington Management trimmed2026-02-17
    −4,944,352 shares · 2025Q4
    Position
  13. Ray Dalio (Bridgewater Associates) trimmed2026-02-13
    −65,984 shares · 2025Q4
    Position
  14. Lee Ainslie (Maverick Capital) opened position2026-02-13
    +2,944,254 shares · 2025Q4
    Position
  15. Sands Capital Management opened position2026-02-13
    +805,164 shares · 2025Q4
    Position
  16. Renaissance Technologies added2026-02-12
    +1,465,600 shares · 2025Q4
    Position
  17. Norges Bank (Norway SWF) opened position2026-02-10
    +23,066,546 shares · 2025Q4
    Position
  18. Ken Fisher (Fisher Asset Mgmt) added2026-02-09
    +677,191 shares · 2025Q4
    Position
  19. Mario Gabelli (GAMCO) trimmed2026-02-05
    −12,353 shares · 2025Q4
    Position
  20. Paul Tudor Jones (Tudor Investment) exited2025-12-09
    −650,620 shares · 2025Q3
    Position
  21. Izzy Englander (Millennium Mgmt) added2025-11-14
    +3,888,802 shares · 2025Q3
    Position
  22. AQR Capital Management trimmed2025-11-14
    −671,342 shares · 2025Q3
    Position
  23. Steve Cohen (Point72) trimmed2025-11-14
    −829,610 shares · 2025Q3
    Position
  24. Two Sigma Investments added2025-11-14
    +65,205 shares · 2025Q3
    Position
  25. D.E. Shaw & Co. added2025-11-14
    +2,155,204 shares · 2025Q3
    Position
  26. Andreas Halvorsen (Viking Global) trimmed2025-11-14
    −404,082 shares · 2025Q3
    Position
  27. T. Rowe Price trimmed2025-11-14
    −2,643,954 shares · 2025Q3
    Position
  28. Wellington Management trimmed2025-11-14
    −17,996,024 shares · 2025Q3
    Position
  29. Ron Baron (Baron Capital / BAMCO) trimmed2025-11-14
    −10,000 shares · 2025Q3
    Position
  30. Norges Bank (Norway SWF) exited2025-11-13
    −19,457,562 shares · 2025Q3
    Position

Insider activity

No insider transactions in the last 30 days.
View full insider history for BSX →
Follow-the-investor returns
If you'd copied each holder of BSX…
Cost basis inferred from each manager's quarter-over-quarter position changes. Sorted by % return on the position they're still holding.
InvestorFirst inCost basisReturnPosition value today
Dodge & Cox2016Q1$18.81+241.5%$5.7M
Wellington Management2016Q1$32.15+99.8%$623.6M
Sands Capital Management2019Q1$40.61+58.2%$51.7M
Ron Baron (Baron Capital / BAMCO)2018Q4$55.77+15.2%$3.0M
Mario Gabelli (GAMCO)2016Q1$60.09+6.9%$7.2M
T. Rowe Price2016Q1$64.94-1.1%$479.0M
Ken Fisher (Fisher Asset Mgmt)2018Q4$69.85-8.0%$586.9M
Ray Dalio (Bridgewater Associates)2016Q1$80.57-20.3%$6.0M
Andreas Halvorsen (Viking Global)2018Q3$81.32-21.0%$161.2M
AQR Capital Management2016Q1$82.57-22.2%$70.5M
Renaissance Technologies2016Q1$94.59-32.1%$153.0M
Izzy Englander (Millennium Mgmt)2016Q1$95.15-32.5%$81.0M
Izzy Englander (Millennium Mgmt)2016Q1$95.15-32.5%$81.0M
Izzy Englander (Millennium Mgmt)2016Q1$95.15-32.5%$81.0M
Lee Ainslie (Maverick Capital)2018Q1$95.24-32.6%$189.1M
Stephen Mandel (Lone Pine Capital)2025Q4$95.35-32.6%$13.0M
Two Sigma Investments2016Q2$95.36-32.6%$244K
Two Sigma Investments2016Q2$95.36-32.6%$244K
Paul Tudor Jones (Tudor Investment)2016Q2$95.42-32.7%$47.1M
Paul Tudor Jones (Tudor Investment)2016Q2$95.42-32.7%$47.1M
Paul Tudor Jones (Tudor Investment)2016Q2$95.42-32.7%$47.1M
Ken Griffin (Citadel Advisors)2016Q1$95.61-32.8%$42.4M
Ken Griffin (Citadel Advisors)2016Q1$95.61-32.8%$42.4M
Ken Griffin (Citadel Advisors)2016Q1$95.61-32.8%$42.4M
Steve Cohen (Point72)2016Q1$96.14-33.2%$17.9M
Steve Cohen (Point72)2016Q1$96.14-33.2%$17.9M
Steve Cohen (Point72)2016Q1$96.14-33.2%$17.9M
D.E. Shaw & Co.2016Q1$97.17-33.9%$722.5M
Norges Bank (Norway SWF)2016Q1$251.36-74.4%$1.48B

Who moved on this name in 2025Q4

Position changes reported for the latest quarter, grouped by direction.
New positions5
Added to5
Trimmed9
Exited0
—

Institutional ownership over time

Distinct super-investors holding this ticker · combined dollar value, by quarter.
QuarterHoldersCombined value
2022Q1
21
$603.01B
2022Q2
23
$471.19B
2022Q3
23
$10.03B
2022Q4
21
$11.37B
2023Q1
21
$12.03B
2023Q2
24
$12.97B
2023Q3
22
$10.64B
2023Q4
22
$10.62B
2024Q1
24
$14.78B
2024Q2
27
$17.23B
2024Q3
26
$8.17B
2024Q4
23
$5.13B
2025Q1
27
$8.07B
2025Q2
26
$10.91B
2025Q3
24
$6.76B
2025Q4
29
$9.07B
Congress members trading this stock
DateMemberTypeAmount rangeFiling
2026-02-10Gilbert CisnerosBuy$1K – $15KPDF ↗
2026-01-30Gilbert CisnerosBuy$1K – $15KPDF ↗
2025-12-24Gilbert CisnerosSell (P)$1K – $15KPDF ↗
2025-11-18Gilbert CisnerosBuy$1K – $15KPDF ↗
2025-10-31Lisa McClainSell$1K – $15KPDF ↗
2025-10-30Lisa McClainBuy$1K – $15KPDF ↗
2025-10-30Lisa McClainSell$1K – $15KPDF ↗
2025-10-28Kevin HernSell (P)$15K – $50KPDF ↗
2025-10-17Gilbert CisnerosBuy$1K – $15KPDF ↗
2025-09-23Valerie HoyleSell$1K – $15KPDF ↗
2025-08-04Lisa McClainSell (P)$1K – $15KPDF ↗
2025-07-31Gilbert CisnerosSell (P)$1K – $15KPDF ↗

Who owns BSX

29 super-investors · 2025Q4
Tracked stake
95.66M
shares
Combined value
$9.07B
% of shares outstanding
—
shares-out unknown
Quarter action mix
New7Added9Trim12Held1
#ManagerSharesValue
1Norges Bank
Norway SWF
23.07M$2.20B
2D.E. Shaw & Co.11.25M$1.07B
3Izzy Englander
Millennium Mgmt
11.26M$1.03B
4Wellington Management9.71M$926M
5Ken Fisher
Fisher Asset Mgmt
9.14M$871M
6T. Rowe Price7.46M$711M
7Ken Griffin
Citadel Advisors
4.78M$455M
8Lee Ainslie
Maverick Capital
2.94M$281M
9Andreas Halvorsen
Viking Global
2.51M$239M
10Two Sigma Investments2.47M$236M
11Steve Cohen
Point72
2.43M$232M
12Renaissance Technologies2.38M$227M
13Izzy Englander
Millennium Mgmt
1.26M$120M
14AQR Capital Management1.10M$105M
15Sands Capital Management805.2K$77M
16Paul Tudor Jones
Tudor Investment
732.8K$70M
17Ken Griffin
Citadel Advisors
660.6K$63M
18Ken Griffin
Citadel Advisors
600.0K$57M
19Steve Cohen
Point72
278.6K$27M
20Stephen Mandel
Lone Pine Capital
201.7K$19M
21Steve Cohen
Point72
158.9K$15M
22Mario Gabelli
GAMCO
111.6K$11M
23Ray Dalio
Bridgewater Associates
93.7K$9M
24Dodge & Cox88.9K$8M
25Izzy Englander
Millennium Mgmt
60.6K$6M
26Paul Tudor Jones
Tudor Investment
48.6K$5M
27Ron Baron
Baron Capital / BAMCO
47.0K$4M
28Paul Tudor Jones
Tudor Investment
4.5K$429K
29Two Sigma Investments3.8K$362K

Recent moves

20 transactions
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