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BSX · Boston Scientific Corp · Shareholders & Ownership

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$44.51 -1.07 (-2.35%) At close · Oct 21
Market Cap
$64.51B
Shares
1.45B
Volume · Oct 21 15.19M Avg daily vol (3M) 19.53M

Every disclosed holder of BSX in one list: 13F institutions, Schedule 13D and 13G filers, insiders (Forms 3, 4 and 5) and registered funds, each from its own latest filing. Holders nest by CIK and SEC reporting links, never by name, and each is summed once.

Who Owns BSX

13F quarter Sep 30, 2026, combined view: filers that have not filed yet carry their Jun 30, 2026 positions
Holder group Shares % Out
Institutional (13F) 1,321,451,568 91.18%
Insiders (Forms 3, 4, 5) 2,553,334 0.18%
13D/G-only blocks 0 0.00%
Remaining 125,224,624 8.64%
Registered funds (N-PORT, not summed) 495,583,907 34.20%

Shares outstanding: 1,449,229,526, the issuer's latest cover-page count restated onto today's split basis.

13D/G-only counts each filer's latest 13D or 13G that no 13F report of the listing contains, that names no 13F filer and that no counted insider files. Funds are never summed: their shares sit inside their advisers' 13F reports.

Holders of BSX

# Holder Shares
1
BlackRock, Inc.
13F CIK 2012383 · Holding company · Jun 30, 2026
carried, not yet filed for the newest quarter
129,680,916
1.1
iShares Core S&P 500 ETF
Fund S000004310 · Registered fund · Jun 30, 2026
iShares Trust, not summed
20,445,345
1.2
iShares Russell 1000 Value ETF
Fund S000004345 · Registered fund · Jun 30, 2026
iShares Trust, not summed
3,311,731
1.3
iShares U.S. Medical Devices ETF
Fund S000009419 · Registered fund · Jun 30, 2026
iShares Trust, not summed
2,826,185
1.4
iShares S&P 500 Growth ETF
Fund S000004311 · Registered fund · Jun 30, 2026
iShares Trust, not summed
2,105,869
1.5
BlackRock Health Sciences Opportunities Portfolio
Fund S000001877 · Registered fund · May 29, 2026
BlackRock Funds, not summed
1,945,032
2
VANGUARD CAPITAL MANAGEMENT LLC
13F CIK 2100119 · Registered investment adviser · Jun 30, 2026
carried, not yet filed for the newest quarter
97,087,553
3
STATE STREET CORP
13F CIK 93751 · Bank · Jun 30, 2026
carried, not yet filed for the newest quarter
70,111,196
3.1
State Street(R) Health Care Select Sector SPDR(R) ETF
Fund S000006412 · Registered fund · Jun 30, 2026
SELECT SECTOR SPDR TRUST, not summed
10,500,647
3.2
State Street(R) SPDR(R) Portfolio S&P 500(R) ETF
Fund S000006983 · Registered fund · Jun 30, 2026
SPDR SERIES TRUST, not summed
3,544,156
3.3
ELFUN TRUSTS
Fund S000011821 · Registered fund · Jun 30, 2026
ELFUN TRUSTS, not summed
1,601,100
3.4
State Street(R) SPDR(R) Portfolio S&P 500(R) Growth ETF
Fund S000006984 · Registered fund · Jun 30, 2026
SPDR SERIES TRUST, not summed
1,486,537
3.5
State Street U.S. Core Equity Fund
Fund S000071466 · Registered fund · Jun 30, 2026
STATE STREET INSTITUTIONAL INVESTMENT TRUST, not summed
845,108
4
PRIMECAP MANAGEMENT CO/CA/
13F CIK 763212 · Registered investment adviser · Jun 30, 2026
carried, not yet filed for the newest quarter
50,520,914
4.1
VANGUARD PRIMECAP FUND
Fund S000002568 · Registered fund · Jun 30, 2026
VANGUARD CHESTER FUNDS, not summed
30,831,039
4.2
VANGUARD CAPITAL OPPORTUNITY FUND
Fund S000002594 · Registered fund · Jun 30, 2026
VANGUARD HORIZON FUNDS, not summed
8,820,206
4.3
VANGUARD PRIMECAP CORE FUND
Fund S000002581 · Registered fund · Jun 30, 2026
VANGUARD FENWAY FUNDS, not summed
4,925,796
4.4
PRIMECAP Odyssey Growth Fund
Fund S000005540 · Registered fund · Jul 31, 2026
PRIMECAP Odyssey Funds, not summed
1,228,990
4.5
PRIMECAP Odyssey Aggressive Growth Fund
Fund S000005541 · Registered fund · Jul 31, 2026
PRIMECAP Odyssey Funds, not summed
1,180,930
5
VANGUARD TOTAL STOCK MARKET INDEX FUND
Fund S000002848 · Registered fund · Jun 30, 2026
VANGUARD INDEX FUNDS, not summed
47,181,284
6
FMR LLC
13F CIK 315066 · Holding company · Jun 30, 2026
carried, not yet filed for the newest quarter
45,702,845
6.1
FMR LLC
13G CIK 315066 · Holding company · Jun 30, 2026
Rule 13d-1(b), qualified institution, not summed
46,378,258
6.2
Fidelity 500 Index Fund
Fund S000006027 · Registered fund · May 31, 2026
Fidelity Concord Street Trust, not summed
18,978,237
6.3
Strategic Advisers Fidelity U.S. Total Stock Fund
Fund S000061481 · Registered fund · May 31, 2026
Fidelity Rutland Square Trust II, not summed
6,238,651
6.4
Fidelity Contrafund
Fund S000006037 · Registered fund · Jun 30, 2026
Fidelity Contrafund, not summed
5,902,679
6.5
Fidelity Series Value Discovery Fund
Fund S000039216 · Registered fund · Jul 31, 2026
Fidelity Devonshire Trust, not summed
3,535,773
7
VANGUARD 500 INDEX FUND
Fund S000002839 · Registered fund · Jun 30, 2026
VANGUARD INDEX FUNDS, not summed
38,518,788
8
GEODE CAPITAL MANAGEMENT, LLC
13F CIK 1214717 · Registered investment adviser · Jun 30, 2026
carried, not yet filed for the newest quarter
33,440,102
9
VANGUARD PORTFOLIO MANAGEMENT LLC
13F CIK 2100121 · Registered investment adviser · Jun 30, 2026
carried, not yet filed for the newest quarter
29,792,794
10
D. E. Shaw & Co., Inc.
13F CIK 1009207 · Unknown · Jun 30, 2026
carried, not yet filed for the newest quarter
25,457,409
11
MASSACHUSETTS FINANCIAL SERVICES CO /MA/
13F CIK 912938 · Registered investment adviser · Jun 30, 2026
carried, not yet filed for the newest quarter
24,859,191
11.1
MFS Growth Fund
Fund S000002419 · Registered fund · May 31, 2026
MFS Series Trust II, not summed
3,471,595
11.2
MFS Massachusetts Investors Growth Stock Fund
Fund S000000695 · Registered fund · May 31, 2026
MFS Massachusetts Investors Growth Stock Fund, not summed
2,232,704
11.3
MFS Total Return Fund
Fund S000002439 · Registered fund · Jun 30, 2026
MFS Series Trust V, not summed
1,801,799
11.4
Massachusetts Investors Trust
Fund S000000696 · Registered fund · Jun 30, 2026
MASSACHUSETTS INVESTORS TRUST, not summed
793,739
11.5
MFS Core Equity Fund
Fund S000000763 · Registered fund · May 31, 2026
MFS SERIES TRUST I, not summed
627,315
12
JPMORGAN CHASE & CO
13F CIK 19617 · Bank · Jun 30, 2026
carried, not yet filed for the newest quarter
23,907,838
13
ARROWSTREET CAPITAL, LIMITED PARTNERSHIP
13F CIK 1164508 · Registered investment adviser · Jun 30, 2026
carried, not yet filed for the newest quarter
23,293,913
14
NORGES BANK
13F CIK 1374170 · Non-US institution · Jun 30, 2026
carried, not yet filed for the newest quarter
21,170,029
15
TWO SIGMA INVESTMENTS, LP
13F CIK 1179392 · Registered investment adviser · Jun 30, 2026
carried, not yet filed for the newest quarter
19,359,023
16
MORGAN STANLEY
13F CIK 895421 · Holding company · Jun 30, 2026
carried, not yet filed for the newest quarter
18,947,147
16.1
Global Strategist Portfolio
Fund S000004124 · Registered fund · Jun 30, 2026
MORGAN STANLEY INSTITUTIONAL FUND TRUST, not summed
4,766
16.2
E*TRADE No Fee Large Cap Index Fund
Fund S000090720 · Registered fund · Jul 31, 2026
E Trade Trust, not summed
2,898
16.3
E*TRADE No Fee Total Market Index Fund
Fund S000090722 · Registered fund · Jul 31, 2026
E Trade Trust, not summed
2,172
16.4
Global Strategist Portfolio
Fund S000004181 · Registered fund · Jun 30, 2026
MORGAN STANLEY VARIABLE INSURANCE FUND INC., not summed
638
17
Jupiter Topco LLC
13F CIK 2146052 · Unknown · Jun 30, 2026
carried, not yet filed for the newest quarter
18,822,853
17.1
Janus Henderson VIT Enterprise Portfolio
Fund S000010396 · Registered fund · Jun 30, 2026
Janus Aspen Series, not summed
567,101
17.2
Janus Henderson VIT Balanced Portfolio
Fund S000010394 · Registered fund · Jun 30, 2026
Janus Aspen Series, not summed
565,143
17.3
Janus Henderson VIT Global Research Portfolio
Fund S000010402 · Registered fund · Jun 30, 2026
Janus Aspen Series, not summed
73,279
17.4
Janus Henderson VIT Research Portfolio
Fund S000010395 · Registered fund · Jun 30, 2026
Janus Aspen Series, not summed
31,899
18
Bollard Group LLC
13F CIK 1556218 · Registered investment adviser · Jun 30, 2026
carried, not yet filed for the newest quarter
18,420,720
19
GOLDMAN SACHS GROUP INC
13F CIK 886982 · Holding company · Jun 30, 2026
carried, not yet filed for the newest quarter
16,954,342
19.1
Goldman Sachs U.S. Tax-Managed Equity Fund
Fund S000009340 · Registered fund · Jun 30, 2026
Goldman Sachs Trust, not summed
507,954
19.2
Goldman Sachs U.S. Equity Insights Fund
Fund S000009327 · Registered fund · Jul 31, 2026
Goldman Sachs Trust, not summed
233,474
19.3
Goldman Sachs Large Cap Value Insights Fund
Fund S000009326 · Registered fund · Jul 31, 2026
Goldman Sachs Trust, not summed
202,984
19.4
Goldman Sachs Mid Cap Growth Fund
Fund S000009321 · Registered fund · May 31, 2026
Goldman Sachs Trust, not summed
174,414
19.5
Goldman Sachs S&P 500 Premium Income ETF
Fund S000081511 · Registered fund · Jun 30, 2026
Goldman Sachs ETF Trust, not summed
151,310
20
Capital World Investors
13F CIK 1422849 · Investment adviser · Jun 30, 2026
carried, not yet filed for the newest quarter
16,812,257
21
UBS Group AG
13F CIK 1610520 · Bank · Jun 30, 2026
carried, not yet filed for the newest quarter
16,352,420
22
WELLINGTON MANAGEMENT GROUP LLP
13F CIK 902219 · Holding company · Jun 30, 2026
carried, not yet filed for the newest quarter
15,301,828
22.1
VANGUARD HEALTH CARE FUND
Fund S000002922 · Registered fund · Jul 31, 2026
VANGUARD SPECIALIZED FUNDS, not summed
12,474,112
23
Amundi
13F CIK 1330387 · Holding company · Jun 30, 2026
carried, not yet filed for the newest quarter
14,296,121
24
Capital Research Global Investors
13F CIK 1422848 · Investment adviser · Jun 30, 2026
carried, not yet filed for the newest quarter
14,180,571
25
Invesco Ltd.
13F CIK 914208 · Investment adviser · Jun 30, 2026
carried, not yet filed for the newest quarter
13,800,748
25.1
Invesco S&P 500 Equal Weight ETF
Fund S000060812 · Registered fund · Jul 31, 2026
Invesco Exchange-Traded Fund Trust, not summed
3,854,300
25.2
Invesco Value Opportunities Fund
Fund S000027840 · Registered fund · Jul 31, 2026
AIM Sector Funds (Invesco Sector Funds), not summed
2,009,313
25.3
Invesco Global Fund
Fund S000064624 · Registered fund · Jul 31, 2026
AIM International Mutual Funds (Invesco International Mutual Funds), not summed
1,397,898
25.4
Invesco Comstock Fund
Fund S000027834 · Registered fund · Jul 31, 2026
AIM Sector Funds (Invesco Sector Funds), not summed
1,116,736
25.5
Invesco S&P 500 GARP ETF
Fund S000032768 · Registered fund · Jul 31, 2026
Invesco Exchange-Traded Fund Trust, not summed
651,681
26
FRANKLIN RESOURCES INC
13F CIK 38777 · Investment adviser · Jun 30, 2026
carried, not yet filed for the newest quarter
13,772,323
26.1
Putnam Large Cap Value Fund
Fund S000005581 · Registered fund · Jul 31, 2026
Putnam Large Cap Value Fund, not summed
6,084,819
26.2
Putnam Sustainable Leaders Fund
Fund S000006295 · Registered fund · Jun 30, 2026
Putnam Sustainable Leaders Fund, not summed
793,900
26.3
Putnam Global Health Care Fund
Fund S000005666 · Registered fund · May 31, 2026
Putnam Global Health Care Fund, not summed
546,348
26.4
Franklin Equity Income Fund
Fund S000006852 · Registered fund · Jul 31, 2026
Franklin Investors Securities Trust, not summed
440,000
26.5
Putnam Core Equity Fund
Fund S000029796 · Registered fund · Jul 31, 2026
Putnam Funds Trust, not summed
341,899
27
UBS AM, a distinct business unit of UBS ASSET MANAGEMENT AMERICAS LLC
13F CIK 861177 · Registered investment adviser · Jun 30, 2026
carried, not yet filed for the newest quarter
13,091,481
27.1
UBS US Quality Growth At Reasonable Price Fund
Fund S000068970 · Registered fund · Jun 30, 2026
UBS FUNDS, not summed
76,648
27.2
UBS U.S. Allocation Fund
Fund S000002487 · Registered fund · May 31, 2026
UBS INVESTMENT TRUST, not summed
8,272
27.3
UBS GLOBAL ALLOCATION FUND
Fund S000002979 · Registered fund · Jun 30, 2026
UBS FUNDS, not summed
4,714
27.4
PACE Alternative Strategies Investments
Fund S000006035 · Registered fund · Jul 31, 2026
PACE SELECT ADVISORS TRUST, not summed
482
28
Growth Fund of America
Fund S000009228 · Registered fund · May 31, 2026
Growth Fund of America, not summed
13,027,839
29
BANK OF AMERICA CORP /DE/
13F CIK 70858 · Bank · Jun 30, 2026
carried, not yet filed for the newest quarter
13,027,783
30
NORTHERN TRUST CORP
13F CIK 73124 · Bank · Jun 30, 2026
carried, not yet filed for the newest quarter
12,964,638
30.1
Stock Index Fund
Fund S000001247 · Registered fund · Jun 30, 2026
Northern Funds, not summed
441,118
30.2
FlexShares Morningstar US Market Factor Tilt Index Fund
Fund S000033312 · Registered fund · Jul 31, 2026
FlexShares Trust, not summed
43,292
30.3
FlexShares STOXX US ESG Select Index Fund
Fund S000054498 · Registered fund · Jul 31, 2026
FlexShares Trust, not summed
4,350
31
FIL Ltd
13F CIK 318989 · Non-US institution · Jun 30, 2026
carried, not yet filed for the newest quarter
12,332,054
32
JANE STREET GROUP, LLC
13F CIK 1595888 · Unknown · Jun 30, 2026
carried, not yet filed for the newest quarter
12,087,991
33
FARALLON CAPITAL MANAGEMENT LLC
13F CIK 909661 · Registered investment adviser · Jun 30, 2026
carried, not yet filed for the newest quarter
10,521,184
34
Legal & General Group Plc
13F CIK 764068 · Unknown · Jun 30, 2026
carried, not yet filed for the newest quarter
10,119,264
35
AQR CAPITAL MANAGEMENT LLC
13F CIK 1167557 · Registered investment adviser · Jun 30, 2026
carried, not yet filed for the newest quarter
9,681,750
35.1
AQR Long-Short Equity Fund
Fund S000041116 · Registered fund · Jun 30, 2026
AQR Funds, not summed
836,253
35.2
AQR Equity Market Neutral Fund
Fund S000046740 · Registered fund · Jun 30, 2026
AQR Funds, not summed
99,607
35.3
AQR Multi-Asset Fund
Fund S000029959 · Registered fund · Jun 30, 2026
AQR Funds, not summed
66,000
35.4
AQR Global Fund
Fund S000024170 · Registered fund · Jun 30, 2026
AQR Funds, not summed
22,927
35.5
AQR Large Cap Momentum Style Fund
Fund S000025643 · Registered fund · Mar 31, 2026
AQR Funds, not summed
17,375
36
CANADA PENSION PLAN INVESTMENT BOARD
13F CIK 1283718 · Non-US institution · Jun 30, 2026
carried, not yet filed for the newest quarter
9,262,404
37
DZ BANK AG Deutsche Zentral Genossenschafts Bank, Frankfurt am Main
13F CIK 1694217 · Unknown · Jun 30, 2026
carried, not yet filed for the newest quarter
9,227,707
38
CHARLES SCHWAB INVESTMENT MANAGEMENT INC
13F CIK 884546 · Registered investment adviser · Jun 30, 2026
carried, not yet filed for the newest quarter
9,223,151
38.1
Schwab S&P 500 Index Fund
Fund S000005911 · Registered fund · Jul 31, 2026
SCHWAB CAPITAL TRUST, not summed
3,312,250
38.2
Schwab U.S. Large-Cap ETF
Fund S000026632 · Registered fund · May 31, 2026
SCHWAB STRATEGIC TRUST, not summed
1,575,474
38.3
Schwab Total Stock Market Index Fund
Fund S000005913 · Registered fund · Jul 31, 2026
SCHWAB CAPITAL TRUST, not summed
902,674
38.4
Schwab U.S. Broad Market ETF
Fund S000026631 · Registered fund · May 31, 2026
SCHWAB STRATEGIC TRUST, not summed
876,301
38.5
Schwab U.S. Large-Cap Value ETF
Fund S000026634 · Registered fund · May 31, 2026
SCHWAB STRATEGIC TRUST, not summed
747,269
39
VANGUARD GROWTH INDEX FUND
Fund S000002842 · Registered fund · Jun 30, 2026
VANGUARD INDEX FUNDS, not summed
9,210,339
40
Qube Research & Technologies Ltd
13F CIK 1729829 · Exempt reporting adviser · Jun 30, 2026
carried, not yet filed for the newest quarter
8,943,771
41
Nuveen, LLC
13F CIK 1871926 · Unknown · Jun 30, 2026
carried, not yet filed for the newest quarter
8,695,119
41.1
College Retirement Equities Fund - Total Global Stock Account
Fund S000005080 · Registered fund · Jun 30, 2026
College Retirement Equities Fund, not summed
3,106,700
41.2
College Retirement Equities Fund - Global Equities Account
Fund S000005081 · Registered fund · Jun 30, 2026
College Retirement Equities Fund, not summed
1,503,412
41.3
Nuveen Equity Index Fund
Fund S000005360 · Registered fund · Jul 31, 2026
TIAA-CREF Funds, not summed
1,227,848
41.4
College Retirement Equities Fund - S&P 500 Index Account
Fund S000005083 · Registered fund · Jun 30, 2026
College Retirement Equities Fund, not summed
653,623
41.5
Nuveen Large Cap Value Index Fund
Fund S000005388 · Registered fund · Jul 31, 2026
TIAA-CREF Funds, not summed
541,867
42
VANGUARD FIDUCIARY TRUST CO
13F CIK 933478 · Unknown · Jun 30, 2026
carried, not yet filed for the newest quarter
8,345,428
43
ROYAL BANK OF CANADA
13F CIK 1000275 · Bank · Jun 30, 2026
carried, not yet filed for the newest quarter
8,100,653
44
VANGUARD INSTITUTIONAL INDEX FUND
Fund S000002853 · Registered fund · Jun 30, 2026
VANGUARD INSTITUTIONAL INDEX FUNDS, not summed
8,069,042
45
Bank of New York Mellon Corp
13F CIK 1390777 · Bank · Jun 30, 2026
carried, not yet filed for the newest quarter
7,943,553
45.1
BNY Mellon US Large Cap Core Equity ETF
Fund S000067260 · Registered fund · Jul 31, 2026
BNY Mellon ETF Trust, not summed
123,246
45.2
BNY Mellon Women's Opportunities ETF
Fund S000080184 · Registered fund · Aug 29, 2025
BNY Mellon ETF Trust, not summed
4,123
46
BNP PARIBAS ARBITRAGE, SA
13F CIK 1166588 · Non-US institution · Jun 30, 2026
carried, not yet filed for the newest quarter
7,620,469
47
VANGUARD VALUE INDEX FUND
Fund S000002840 · Registered fund · Jun 30, 2026
VANGUARD INDEX FUNDS, not summed
7,086,757
48
PRICE T ROWE ASSOCIATES INC /MD/
13F CIK 80255 · Registered investment adviser · Jun 30, 2026
carried, not yet filed for the newest quarter
7,070,412
48.1
T. Rowe Price Health Sciences Fund, Inc.
Fund S000002088 · Registered fund · Jun 30, 2026
T. ROWE PRICE HEALTH SCIENCES FUND, INC., not summed
1,196,671
48.2
T. Rowe Price Equity Index 500 Fund
Fund S000002089 · Registered fund · Jun 30, 2026
T. ROWE PRICE INDEX TRUST, INC., not summed
917,398
48.3
T. Rowe Price U.S. Equity Research Fund
Fund S000002071 · Registered fund · Jun 30, 2026
T. Rowe Price U.S. Equity Research Fund, Inc., not summed
404,038
48.4
T. Rowe Price Hedged Equity Fund
Fund S000080479 · Registered fund · Jun 30, 2026
T. Rowe Price Equity Funds, Inc., not summed
125,993
48.5
T. Rowe Price U.S. Equity Research ETF
Fund S000071604 · Registered fund · Jun 30, 2026
T. Rowe Price Exchange-Traded Funds, Inc., not summed
91,810
49
AMCAP Fund
Fund S000008817 · Registered fund · May 31, 2026
AMCAP Fund, not summed
6,913,184
50
Assenagon Asset Management S.A.
13F CIK 1546007 · Unknown · Sep 30, 2026
6,734,463

252 more nested rows are not shown here; Every filing lists them all.

Shares are restated onto today's split basis. Change compares each row with the same holder's previous filing in the same source; a dash means there is none to compare. Nested 13D/G, insider and fund rows are not summed, since a 13F report already holds them.

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Key facts CIK 885725 CUSIP 101137107 13F (30d) 297 filings 279 filers Visit website Investor relations