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Business Summary
Filings
Ownership
Valuation
Ownership — BSX
Institutional Holdings
Insider Transactions
US Institutional Ownership
83.4%
Institution
Shares
Value
Ownership %
Change
Filing Date
BlackRock, Inc.
131.82M
$8.27B
8.88%
-4.17M
2026-03-31
VANGUARD CAPITAL MANAGEMENT LLC
96.41M
$6.05B
6.49%
--
2026-03-31
FMR LLC
74.23M
$4.66B
5.00%
-23.16M
2026-03-31
STATE STREET CORP
67.99M
$4.27B
4.58%
+2.14M
2026-03-31
GEODE CAPITAL MANAGEMENT, LLC
33.29M
$2.08B
2.24%
+902.0K
2026-03-31
PRIMECAP MANAGEMENT CO/CA/
32.53M
$2.04B
2.19%
+1.43M
2026-03-31
VANGUARD PORTFOLIO MANAGEMENT LLC
29.80M
$1.87B
2.01%
--
2026-03-31
D. E. Shaw & Co., Inc.
24.43M
$1.53B
1.65%
+13.18M
2026-03-31
BANK OF AMERICA CORP /DE/
22.76M
$1.43B
1.53%
-2.36M
2026-03-31
MORGAN STANLEY
22.27M
$1.40B
1.50%
-693.9K
2026-03-31
GOLDMAN SACHS GROUP INC
19.37M
$1.22B
1.30%
+2.60M
2026-03-31
WELLINGTON MANAGEMENT GROUP LLP
18.83M
$1.18B
1.27%
+9.12M
2026-03-31
JANUS HENDERSON GROUP PLC
16.50M
$1.03B
1.11%
+3.91M
2026-03-31
UBS Group AG
15.81M
$992.0M
1.06%
+213.2K
2026-03-31
Capital World Investors
15.31M
$960.0M
1.03%
-11.84M
2026-03-31
FRANKLIN RESOURCES INC
14.71M
$922.0M
0.99%
+9.03M
2026-03-31
Amundi
14.12M
$886.0M
0.95%
+1.71M
2026-03-31
ARROWSTREET CAPITAL, LIMITED PARTNERSHIP
13.89M
$871.0M
0.94%
+2.86M
2026-03-31
UBS AM, A DISTINCT BUSINESS UNIT OF UBS ASSET MANAGEMENT AMERICAS LLC
13.51M
$847.0M
0.91%
+2.58M
2026-03-31
NORTHERN TRUST CORP
13.37M
$839.0M
0.90%
-561.5K
2026-03-31
Nuveen, LLC
11.73M
$736.0M
0.79%
+2.36M
2026-03-31
MASSACHUSETTS FINANCIAL SERVICES CO /MA/
11.00M
$716.0M
0.74%
+1.91M
2026-03-31
Legal & General Group Plc
10.60M
$665.0M
0.71%
-275.9K
2026-03-31
Assenagon Asset Management S.A.
10.06M
$631.0M
0.68%
+5.75M
2026-03-31
Bank of New York Mellon Corp
9.54M
$598.0M
0.64%
-1.68M
2026-03-31
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