BOSTON SCIENTIFIC CORP BSX
CIK 0000885725 · CUSIP 101137107
Quarter-end disclosures, not live holdings.
Top 20 institutions
Weight means this stock's share of the manager's own portfolio.
| # | Manager | Value | Manager weight | Change vs prior | Source | |
|---|---|---|---|---|---|---|
| 01 | FMR LLC CIK 315066 · View history | $9.72B 141,930,013 shares | 0.65% | +3.68M(+2.7%)Added | SEC filing ↗ May 13, 2024 | ▾ |
| 02 | VANGUARD GROUP INC CIK 102909 · View history | $8.73B 127,437,884 shares | 0.17% | +1.99M(+1.6%)Added | SEC filing ↗ May 10, 2024 | ▾ |
| 03 | BlackRock Inc. CIK 1364742 · View history | $8.69B 126,835,782 shares | 0.20% | +275.95K(+0.2%)Added | SEC filing ↗ May 10, 2024 | ▾ |
| 04 | STATE STREET CORP CIK 93751 · View history | $4.30B 62,728,259 shares | 0.19% | +393.65K(+0.6%)Added | SEC filing ↗ May 15, 2024 | ▾ |
| 05 | MASSACHUSETTS FINANCIAL SERVICES CO /MA/ CIK 912938 · View history | $3.19B 46,607,016 shares | 0.95% | -10.57M(-18.5%)Reduced | SEC filing ↗ May 14, 2024 | ▾ |
| 06 | PRIMECAP MANAGEMENT CO/CA/ CIK 763212 · View history | $2.60B 37,947,665 shares | 1.94% | +42.01K(+0.1%)Added | SEC filing ↗ May 14, 2024 | ▾ |
| 07 | WELLINGTON MANAGEMENT GROUP LLP CIK 902219 · View history | $2.28B 33,288,817 shares | 0.40% | -3.15M(-8.7%)Reduced | SEC filing ↗ May 15, 2024 | ▾ |
| 08 | JPMORGAN CHASE & CO CIK 19617 · Amended · View history | $2.16B 31,479,634 shares | 0.19% | +2.85M(+9.9%)Added | SEC filing ↗ Dec 26, 2024 | ▾ |
| 09 | BANK OF AMERICA CORP /DE/ CIK 70858 · Amended · View history | $2.05B 29,961,685 shares | 0.20% | +1.81M(+6.4%)Added | SEC filing ↗ May 15, 2024 | ▾ |
| 10 | GEODE CAPITAL MANAGEMENT, LLC CIK 1214717 · View history | $1.94B 28,452,663 shares | 0.18% | +896.45K(+3.3%)Added | SEC filing ↗ May 13, 2024 | ▾ |
| 11 | Bollard Group LLC CIK 1556218 · View history | $1.51B 21,998,621 shares | 45.57% | -392.89K(-1.8%)Reduced | SEC filing ↗ May 13, 2024 | ▾ |
| 12 | DZ BANK AG Deutsche Zentral Genossenschafts Bank, Frankfurt am Main CIK 1694217 · Amended · View history | $1.41B 20,624,129 shares | 1.61% | -508.59K(-2.4%)Reduced | SEC filing ↗ May 4, 2026 | ▾ |
| 13 | JANUS HENDERSON GROUP PLC CIK 1274173 · View history | $1.27B 18,612,204 shares | 0.70% | -838.41K(-4.3%)Reduced | SEC filing ↗ May 15, 2024 | ▾ |
| 14 | MORGAN STANLEY CIK 895421 · Amended · View history | $1.23B 17,964,783 shares | 0.10% | -796.80K(-4.2%)Reduced | SEC filing ↗ Oct 17, 2024 | ▾ |
| 15 | NORGES BANK CIK 1374170 · Amended · View history | $1.20B 17,510,204 shares | 0.19% | +1.41M(+8.8%)Added | SEC filing ↗ May 14, 2024 | ▾ |
| 16 | Artisan Partners Limited Partnership CIK 1466153 · View history | $1.11B 16,177,510 shares | 1.61% | -992.43K(-5.8%)Reduced | SEC filing ↗ May 13, 2024 | ▾ |
| 17 | Capital World Investors CIK 1422849 · View history | $1.10B 16,008,085 shares | 0.18% | +6.59M(+69.9%)Added | SEC filing ↗ May 14, 2024 | ▾ |
| 18 | FRANKLIN RESOURCES INC CIK 38777 · View history | $1.07B 15,676,530 shares | 0.34% | +14.15M(+929.9%)Added | SEC filing ↗ May 13, 2024 | ▾ |
| 19 | Bank of New York Mellon Corp CIK 1390777 · View history | $1.06B 15,470,691 shares | 0.20% | -1.50M(-8.8%)Reduced | SEC filing ↗ Apr 25, 2024 | ▾ |
| 20 | GOLDMAN SACHS GROUP INC CIK 886982 · View history | $1.00B 14,666,468 shares | 0.21% | -1.36M(-8.5%)Reduced | SEC filing ↗ May 15, 2024 | ▾ |
Showing 20 / 1,226 institutions. The complete set is available through the API.
Coverage & totals by quarter
Reporting institutions by quarter
Counts also change with data coverage and reporting entities; they do not measure net buying. Distinct managers with a live stock row in this CUSIP; totals may include overlapping filings and are not a share of the company.
Explore all 1,226 reporting institutions.
This page includes 20 of 1,226 reporting institutions. Sign in to look up the full history beyond 3 years, use advanced screening & filtering, download CSV, and get the complete set through the Akkru API.
- Download CSV
- Earlier quarters
- Advanced screening & filtering
- API & AI access
+ New accounts get free API credits to explore data beyond ownership filings.
For AI agents & developers
The initial HTML of this page carries its exact data as script#research-data (JSON): values, units, scope, preview limits and SEC sources. Read it directly, no script or API key needed; script#research-access says what needs an account. This page lists 20 of 1,226 reporting institutions; totals use the complete disclosed data.
Without an account: the last 3 years, with the row caps stated on the page. A free account opens all history on file on these pages and the CSV of what a page shows. Rows beyond the caps and bulk retrieval go through the authenticated API / MCP.
MCP https://api.akkrudata.ai/mcp
get_institutional_security_holders
{"cusip":"101137107","quarter":"2024Q1","type":"positions","page_size":100}Connect to MCP with OAuth and follow the returned pagination. Credits and usage limits depend on the account.
- MCP endpoint
- https://api.akkrudata.ai/mcp
- API / MCP documentation
- /documents
- llms.txt
- /llms.txt
Sources, coverage & how to read this data
Figures are as reported to the SEC and merged with later amendments where Akkru could match them. Preview limits apply to what is listed, not to the totals, which come from the complete reported data. Nothing is zero-filled: a missing quarter or month is shown as missing.