Guru Ownership Over Time
Guru Analysis for Boston Scientific Corporation (BSX)
Boston Scientific Corporation (BSX), a key player in the Healthcare sector, continues to attract institutional attention.
As of Q3 2025, a total of 13 Super Investors (Gurus) hold positions in the company, with a combined stake valued at approximately $2.02 B.
Top institutional holders include Ken Fisher and John Armitage.
Notably, John Armitage has expressed high conviction in this stock, allocating 5.47% of their equity portfolio to it.
Institutional sentiment is currently Strongly Bullish. This is evidenced by a $212.9 M net inflow during the quarter.
Recent activity highlights Ray Dalio who increased their stake by 230.8%. Conversely, Renaissance Technologies reduced exposure by 38.7%.
| Portfolio Manager | % of portfolio | Activity | Shares | Value | Peroid |
|---|---|---|---|---|---|
| 0.30% | Add 9.8% | 8,461,025 | $826.05 M | Q3 2025 | |
| 5.47% | Add 223.7% | 5,312,504 | $518.66 M | Q3 2025 | |
| 0.67% | Reduce -13.3% | 2,641,682 | $257.91 M | Q3 2025 | |
| 0.27% | Reduce -33.7% | 1,631,053 | $159.24 M | Q3 2025 | |
| 0.07% | Reduce -36.4% | 1,171,851 | $114.41 M | Q3 2025 | |
| 0.12% | Reduce -38.7% | 917,105 | $89.54 M | Q3 2025 | |
| 0.11% | Add 1.5% | 660,186 | $64.45 M | Q3 2025 | |
| 0.14% | Add 17.4% | 302,499 | $29.53 M | Q3 2025 | |
| 0.13% | Reduce -16.1% | 278,071 | $27.15 M | Q3 2025 | |
| 0.09% | Add 169.9% | 201,112 | $19.63 M | Q3 2025 | |
| 0.06% | Add 230.8% | 159,729 | $15.59 M | Q3 2025 | |
| 0.12% | Reduce -1.0% | 123,992 | $12.11 M | Q3 2025 | |
| 0.01% | Reduce -1.0% | 10,307 | $1.01 M | Q3 2025 |
| Period | Portfolio Manager | Activity | Share change | % change to portfolio |
|---|
| Period | Portfolio Manager | Activity | Share change | % change to portfolio |
|---|
| Period | Portfolio Manager | Activity | Share change | % change to portfolio |
|---|
| Portfolio Manager | Option Type | % of portfolio | Activity | Shares | Value | Period |
|---|
Key Holders
Top 5 by Value
Top 5 by Conviction
Recent Activity Breakdown(Q3 2025)
Guru Consensus (Q3 2025)
FAQs for Boston Scientific Corporation (BSX)
Top Guru holders include Ken Fisher ($826.05 M), John Armitage ($518.66 M), Andreas Halvorsen ($257.91 M). Collectively, tracked Gurus hold 21.87 M shares.
Based on recent 13F filings, the sentiment is **Positive (Net Buy)**. There was a net inflow of $212.9 M, with 6 Gurus buying and 7 Gurus selling.
In the recent quarter, 7 Gurus reduced their positions, and 0 Gurus sold out of BSX completely. Total sell value was $247.88 M.
Yes, 0 Gurus opened new positions in BSX, and 6 added to their existing holdings. Total buy value was $460.78 M.