BSX
Boston Scientific Corp
6 of the 83 super-investors we track hold BSX, worth a combined $501M per their latest 13F filings. The largest position: Lee Ainslie at 2.3% of their portfolio. This quarter the cohort logged 0 buys and 1 sell on the name. Conviction score: 29 of 100 (how strongly the cohort backs it) — ranked #387 of 742 stocks.
Why super-investors own BSX
BSX is held by 6 super-investors in our cohort, with a combined position value of $501M. The highest-conviction owner is Lee Ainslie at 2.3% of their portfolio. This quarter the cohort registered 1 exited.
AI-synthesized from 13F filings. Not investment advice.
Cohort owners over time
2016Q3 → 2026Q2How many of the cohort members held this stock each quarter.
Owners (6) · click any column to sort
| #↑ | Manager | % Port. | History | Value | Shares |
|---|---|---|---|---|---|
| 1 | Lee Ainslie | 2.3% | 12q | $253M | 5,937,553 |
| 2 | Joel Greenblatt | 0.1% | 40q | $213M | 4,987,748 |
| 3 | Sarah Ketterer | 0.3% | — 1q | $31M | 720,339 |
| 4 | Dodge & Cox Funds | <0.1% | 40q | $4M | 87,485 |
| 5 | Mairs & Power Funds | <0.1% | 20q | $423K | 9,914 |
| 6 | Polen Capital Management | <0.1% | 4q | $203K | 4,750 |
- 1Lee Ainslieport2.3%val$253M5,937,553 sh·12q held
- 2Joel Greenblattport0.1%val$213M4,987,748 sh·40q held
- 3Sarah Kettererport0.3%val$31M720,339 sh·—1q held
- 4Dodge & Cox Fundsport<0.1%val$4M87,485 sh·40q held
- 5Mairs & Power Fundsport<0.1%val$423K9,914 sh·20q held
- 6Polen Capital Managementport<0.1%val$203K4,750 sh·4q held
Owners of BSX also hold
Congress is trading BSX
Congress tracker →- Gilbert Cisnerosbought$1,001 - $15,000 · 2026-06-05
- Gilbert Cisnerossold$1,001 - $15,000 · 2026-06-05
- John Boozmansold$1,001 - $15,000 · 2026-06-04
- Gilbert Cisnerosbought$1,001 - $15,000 · 2026-05-29
- Gilbert Cisnerosbought$1,001 - $15,000 · 2026-05-19
- Gilbert Cisnerosbought$1,001 - $15,000 · 2026-05-11
STOCK Act periodic transaction reports; amounts are disclosed ranges. Who files late →
Recent activity (1)
| Manager | Move | % Port. | Δ Shares | Value | Filed |
|---|---|---|---|---|---|
| Stephen Mandel | EXIT | 0.1% | -100% | $0 | Aug 14, 2026 |
Long US equity 13F-HR filings only. CUSIP 101137107. Not investment advice.