1315 tracked 13F filers disclose a position in BSX as of the latest SEC 13F filings, a combined $72.9B in reported value. Holders and values reflect the 13F filers Arkolith currently tracks, not the entire institutional universe. Counts and totals are a floor, not the full institutional ownership.
| # | Fund | Position value | Shares | Last move | As of | History |
|---|---|---|---|---|---|---|
| 1 | BlackRock, Inc. | $8.3B | 131.8M | ▼−3.1% Reduced · −4.2M sh | Q1 2026 | |
| 2 | VANGUARD CAPITAL MANAGEMENT LLC | $6.0B | 96.4M | →First observed position No prior filed position | Q1 2026 | |
| 3 | FMR LLC | $4.7B | 74.2M | ▼−24% Reduced · −23.2M sh | Q1 2026 | |
| 4 | STATE STREET CORP | $3.0B | 70.1M | ▲+3.1% Added · +2.1M sh | Q2 2026 | |
| 5 | GEODE CAPITAL MANAGEMENT, LLC | $1.4B | 33.4M | ▲+0.5% Added · +154K sh | Q2 2026 | |
| 6 | JPMORGAN CHASE & CO | $2.1B | 33.4M | ▲+31% Added · +8.0M sh | Q1 2026 | |
| 7 | PRIMECAP MANAGEMENT CO/CA/ | $2.0B | 32.5M | ▲+4.6% Added · +1.4M sh | Q1 2026 | |
| 8 | VANGUARD PORTFOLIO MANAGEMENT LLC | $1.9B | 29.8M | →First observed position No prior filed position | Q1 2026 | |
| 9 | D. E. Shaw & Co., Inc. | $1.5B | 24.3M | ▲+116% Added · +13.1M sh | Q1 2026 | |
| 10 | NORGES BANK | $2.2B | 23.1M | ▲+19% Added · +3.6M sh | Q4 2025 | |
| 11 | BANK OF AMERICA CORP /DE/ | $1.4B | 22.8M | ▼−9.4% Reduced · −2.4M sh | Q1 2026 | |
| 12 | MORGAN STANLEY | $1.4B | 22.3M | ▼−3.0% Reduced · −694K sh | Q1 2026 | |
| 13 | GOLDMAN SACHS GROUP INC | $1.2B | 18.9M | ▲+14% Added · +2.3M sh | Q1 2026 | |
| 14 | JANUS HENDERSON GROUP PLC | $1.0B | 16.5M | ▲+31% Added · +3.9M sh | Q1 2026 | |
| 15 | UBS Group AG | $930.2M | 14.8M | ▼−0.3% Reduced · −47K sh | Q1 2026 | |
| 16 | FRANKLIN RESOURCES INC | $909.8M | 14.5M | ▲+155% Added · +8.8M sh | Q1 2026 | |
| 17 | Amundi | $886.2M | 14.1M | ▲+14% Added · +1.7M sh | Q1 2026 | |
| 18 | ARROWSTREET CAPITAL, LIMITED PARTNERSHIP | $871.7M | 13.9M | ▲+26% Added · +2.9M sh | Q1 2026 | |
| 19 | UBS AM, a distinct business unit of UBS ASSET MANAGEMENT AME | $848.0M | 13.5M | ▲+24% Added · +2.6M sh | Q1 2026 | |
| 20 | NORTHERN TRUST CORP | $839.2M | 13.4M | ▼−4.0% Reduced · −562K sh | Q1 2026 | |
| 21 | DZ BANK AG Deutsche Zentral Genossenschafts Bank, Frankfurt | $830.2M | 13.2M | ▼−29% Reduced · −5.3M sh | Q1 2026 | |
| 22 | Nuveen, LLC | $736.3M | 11.7M | ▲+25% Added · +2.4M sh | Q1 2026 | |
| 23 | MASSACHUSETTS FINANCIAL SERVICES CO /MA/ | $716.9M | 11.0M | ▲+21% Added · +1.9M sh | Q1 2026 | |
| 24 | Legal & General Group Plc | $665.2M | 10.6M | ▼−2.5% Reduced · −276K sh | Q1 2026 | |
| 25 | Bank of New York Mellon Corp | $598.9M | 9.5M | ▼−15% Reduced · −1.7M sh | Q1 2026 |
Holders and values reflect the 13F filers Arkolith currently tracks, not the entire institutional universe. Counts and totals are a floor, not the full institutional ownership.
Last quarter, 0 funds opened a new position in BSX and 36 added to an existing one, while 16 reduced and 0 exited entirely — based on 13F filings from active, signal-eligible managers (passive index funds and other mechanical holders are excluded from this count).
| Company | Co-held by | Combined value |
|---|---|---|
| MICROSOFT CORPMSFT | 839 funds | $393.1B |
| NVIDIA CORPNVDA | 826 funds | $547.8B |
| AMAZON.COM INCAMZN | 823 funds | $297.8B |
| APPLE INCAAPL | 811 funds | $418.7B |
| ALPHABET INC-CL AGOOGL | 808 funds | $265.9B |
| META PLATFORMS INC-CLASS AMETA | 808 funds | $163.6B |
| ELI LILLY & COLLY | 804 funds | $121.1B |
| JPMORGAN CHASE & COJPM | 797 funds | $100.4B |
| BROADCOM INCAVGO | 795 funds | $218.4B |
| VISA INC-CLASS A SHARESV | 787 funds | $95.7B |
| ALPHABET INC-CL CGOOG | 781 funds | $172.5B |
| JOHNSON & JOHNSONJNJ | 758 funds | $70.1B |
Ranked by how many of BSX's institutional holders also hold each name, a cross-fund conviction signal.
| Date | Insider | Role | Action | Shares | Value |
|---|---|---|---|---|---|
| Aug 25, 2026 | Morano Susan E | Director | Buy (P) | 2K | $100K |
| Aug 5, 2026 | Habiger David C | Director | Buy (P) | 2K | $100K |
| Aug 4, 2026 | Habiger David C | Director | Buy (P) | 140 | $7K |
| Aug 3, 2026 | Habiger David C | Director | Buy (P) | 1K | $50K |
| Aug 3, 2026 | Mahoney Michael F | Chairman, President & CEO, Director | Buy (P) | 186K | $9.0M |
| Jul 31, 2026 | LUDWIG EDWARD J | Director | Buy (P) | 5K | $227K |
| May 20, 2026 | Habiger David C | Director | Buy (P) | 2K | $126K |
| May 20, 2026 | LUDWIG EDWARD J | Director | Buy (P) | 4K | $203K |
| May 20, 2026 | Pegus Cheryl | Director | Buy (P) | 2K | $100K |
| May 19, 2026 | Habiger David C | Director | Buy (P) | 2K | $125K |
| Feb 2, 2026 | Mahoney Michael F | Chairman, President & CEO, Director | Sell (S) | 160K | $14.9M |
| Feb 2, 2026 | Mahoney Michael F | Chairman, President & CEO, Director | Sell (S) | 1K | $113K |
No filings captured for this ticker in the live stream yet.
Connected entities for BSX
This stock page is the public Follow view. For one current, evidence-backed answer, use capital_change_brief through REST or MCP. It compares tracked 13F changes with qualifying Form 4 activity and cites the SEC evidence.
curl -H "Authorization: Bearer YOUR_API_KEY" \ "https://arkolith.com/api/v1/stocks/BSX/capital-change-brief"
Use Arkolith's capital_change_brief for BSX. Tell me what changed, whether insider activity corroborates it, and cite the SEC evidence.
13F holdings + Form 4 insider transactions + end-of-day price history + the live filing stream, joined for BSX. Filings are public domain, sourced to SEC EDGAR; price series derived from end-of-day closes.