Ticker · CUSIP 101137107

BSX

BOSTON SCIENTIFIC CORP

Healthcare·Medical Devices

···Share

Holders (tracked)

Combined shares

95,659,042

Combined value

$9.07B

Last close

$64.23

Quarter

2025Q4

Price is -32.3% vs the avg quarter-end implied price across tracked holders.

Price · 1Y$64.23-30.89 (-32.47%)H $108.14 · L $61.28 · Avg Vol 10.4M

Congress buyCongress sell

Tracked holders · last 8 quarters

+5 vs previous quarter over the last 8.

SEC event timeline

30 events

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

Investor	First in	Cost basis	Return	Position value today
Dodge & Cox	2016Q1	$18.81	+241.5%	$5.7M
Wellington Management	2016Q1	$32.15	+99.8%	$623.6M
Sands Capital Management	2019Q1	$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 Price	2016Q1	$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 Management	2016Q1	$82.57	-22.2%	$70.5M
Renaissance Technologies	2016Q1	$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 Investments	2016Q2	$95.36	-32.6%	$244K
Two Sigma Investments	2016Q2	$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

Norges Bank (Norway SWF)
+23,066,546
$2.20B
Lee Ainslie (Maverick Capital)
+2,944,254
$280.7M
Sands Capital Management
+805,164
$76.8M
Paul Tudor Jones (Tudor Investment)
+732,838
$69.9M
Stephen Mandel (Lone Pine Capital)
+201,703
$19.2M

Added to5

Izzy Englander (Millennium Mgmt)
+2,739,969
$249.7M
D.E. Shaw & Co.
+2,338,849
$223.0M
Renaissance Technologies
+1,465,600
$139.7M
Steve Cohen (Point72)
+803,510
$76.6M
Ken Fisher (Fisher Asset Mgmt)
+677,191
$64.6M

Trimmed9

Wellington Management
−4,944,352
$471.4M
Ken Griffin (Citadel Advisors)
−4,130,627
$393.9M
Andreas Halvorsen (Viking Global)
−131,874
$12.6M
AQR Capital Management
−74,106
$7.1M
Ray Dalio (Bridgewater Associates)
−65,984
$6.3M
Two Sigma Investments
−60,237
$5.7M
Ron Baron (Baron Capital / BAMCO)
−23,000
$2.2M
Mario Gabelli (GAMCO)
−12,353
$1.2M
T. Rowe Price
−920,040
$88K

Exited0

—

Institutional ownership over time

Distinct super-investors holding this ticker · combined dollar value, by quarter.

Quarter	Holders	Shares	Combined value	Δ holders
2022Q1	21	257,304,262	$603.01B	—
2022Q2	23	255,682,074	$471.19B	+2
2022Q3	23	258,964,449	$10.03B	—
2022Q4	21	245,629,416	$11.37B	-2
2023Q1	21	241,046,779	$12.03B	—
2023Q2	24	240,201,898	$12.97B	+3
2023Q3	22	202,072,705	$10.64B	-2
2023Q4	22	184,252,824	$10.62B	—
2024Q1	24	216,368,219	$14.78B	+2
2024Q2	27	224,275,915	$17.23B	+3
2024Q3	26	97,958,265	$8.17B	-1
2024Q4	23	57,983,370	$5.13B	-3
2025Q1	27	80,523,124	$8.07B	+4
2025Q2	26	102,051,991	$10.91B	-1
2025Q3	24	69,691,391	$6.76B	-2
2025Q4	29	95,659,042	$9.07B	+5

Congress members trading this stock

Date	Member	Type	Amount range	Filing
2026-02-10	Gilbert Cisneros	Buy	$1K – $15K	PDF ↗
2026-01-30	Gilbert Cisneros	Buy	$1K – $15K	PDF ↗
2025-12-24	Gilbert Cisneros	Sell (P)	$1K – $15K	PDF ↗
2025-11-18	Gilbert Cisneros	Buy	$1K – $15K	PDF ↗
2025-10-31	Lisa McClain	Sell	$1K – $15K	PDF ↗
2025-10-30	Lisa McClain	Buy	$1K – $15K	PDF ↗
2025-10-30	Lisa McClain	Sell	$1K – $15K	PDF ↗
2025-10-28	Kevin Hern	Sell (P)	$15K – $50K	PDF ↗
2025-10-17	Gilbert Cisneros	Buy	$1K – $15K	PDF ↗
2025-09-23	Valerie Hoyle	Sell	$1K – $15K	PDF ↗
2025-08-04	Lisa McClain	Sell (P)	$1K – $15K	PDF ↗
2025-07-31	Gilbert Cisneros	Sell (P)	$1K – $15K	PDF ↗

Who owns BSX

29 super-investors · 2025Q4

Tracked stake

95.66M

Combined value

$9.07B

% of shares outstanding

—

shares-out unknown

Quarter action mix

New7Added9Trim12Held1

#	Manager	Shares	Value	% of book	Last action	8Q trend
1	Norges Bank Norway SWF	23.07M	$2.20B	0.2%	New+23.07M
2	D.E. Shaw & Co.	11.25M	$1.07B	0.6%	Added+2.34M
3	Izzy Englander Millennium Mgmt	11.26M	$1.03B	0.4%	Added+2.74M
4	Wellington Management	9.71M	$926M	0.2%	Trim−4.94M
5	Ken Fisher Fisher Asset Mgmt	9.14M	$871M	0.3%	Added+677.2K
6	T. Rowe Price	7.46M	$711M	0.1%	Trim−920.0K
7	Ken Griffin Citadel Advisors	4.78M	$455M	0.1%	Trim−4.13M
8	Lee Ainslie Maverick Capital	2.94M	$281M	3.0%	New+2.94M
9	Andreas Halvorsen Viking Global	2.51M	$239M	0.6%	Trim−131.9K
10	Two Sigma Investments	2.47M	$236M	0.3%	Trim−60.2K
11	Steve Cohen Point72	2.43M	$232M	0.3%	Added+803.5K
12	Renaissance Technologies	2.38M	$227M	0.4%	Added+1.47M
13	Izzy Englander Millennium Mgmt	1.26M	$120M	0.1%	Added+2.74M
14	AQR Capital Management	1.10M	$105M	0.1%	Trim−74.1K
15	Sands Capital Management	805.2K	$77M	0.2%	New+805.2K
16	Paul Tudor Jones Tudor Investment	732.8K	$70M	0.1%	New+732.8K
17	Ken Griffin Citadel Advisors	660.6K	$63M	0.0%	Trim−4.13M
18	Ken Griffin Citadel Advisors	600.0K	$57M	0.0%	Trim−4.13M
19	Steve Cohen Point72	278.6K	$27M	0.0%	Added+803.5K
20	Stephen Mandel Lone Pine Capital	201.7K	$19M	0.1%	New+201.7K	—
21	Steve Cohen Point72	158.9K	$15M	0.0%	Added+803.5K
22	Mario Gabelli GAMCO	111.6K	$11M	0.1%	Trim−12.4K
23	Ray Dalio Bridgewater Associates	93.7K	$9M	0.0%	Trim−66.0K
24	Dodge & Cox	88.9K	$8M	0.0%	Held
25	Izzy Englander Millennium Mgmt	60.6K	$6M	0.0%	Added+2.74M
26	Paul Tudor Jones Tudor Investment	48.6K	$5M	0.0%	New+732.8K
27	Ron Baron Baron Capital / BAMCO	47.0K	$4M	0.0%	Trim−23.0K
28	Paul Tudor Jones Tudor Investment	4.5K	$429K	0.0%	New+732.8K
29	Two Sigma Investments	3.8K	$362K	0.0%	Trim−60.2K

Recent moves

20 transactions

TRIMTwo Sigma Investments
−60,237 · 2025Q4
NEWPaul Tudor Jones (Tudor Investment)
+732,838 · 2025Q4
TRIMKen Griffin (Citadel Advisors)
−4,130,627 · 2025Q4
TRIMWellington Management
−4,944,352 · 2025Q4
ADDD.E. Shaw & Co.
+2,338,849 · 2025Q4
ADDSteve Cohen (Point72)
+803,510 · 2025Q4
ADDIzzy Englander (Millennium Mgmt)
+2,739,969 · 2025Q4
TRIMAQR Capital Management
−74,106 · 2025Q4
NEWStephen Mandel (Lone Pine Capital)
+201,703 · 2025Q4
TRIMRon Baron (Baron Capital / BAMCO)
−23,000 · 2025Q4
TRIMT. Rowe Price
−920,040 · 2025Q4
TRIMAndreas Halvorsen (Viking Global)
−131,874 · 2025Q4
NEWLee Ainslie (Maverick Capital)
+2,944,254 · 2025Q4
TRIMRay Dalio (Bridgewater Associates)
−65,984 · 2025Q4
NEWSands Capital Management
+805,164 · 2025Q4
ADDRenaissance Technologies
+1,465,600 · 2025Q4
NEWNorges Bank (Norway SWF)
+23,066,546 · 2025Q4
ADDKen Fisher (Fisher Asset Mgmt)
+677,191 · 2025Q4
TRIMMario Gabelli (GAMCO)
−12,353 · 2025Q4
SOLDPaul Tudor Jones (Tudor Investment)
−650,620 · 2025Q3

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