Boston Scientific Corp
BSX- Exchange
- NYSE
- Industry
- Surgical & Medical Instruments & Apparatus
- SEC CIK
- 0000885725
In the last 90 days, Boston Scientific Corp insiders filed 5 open-market purchases and 0 sales; 1,485 institutions reported holding it in 13F filings for Q2 2026, worth $60.4B in total; Maverick Capital is the only superinvestor holding it.
Key figures
- Insider buysLast 90 days, $9.49M in total
- 5
- Insider sellsOpen market, last 90 days
- 0
- 13F holdersQ2 2026, −178 vs. previous quarter
- 1,485
- 13F valueReported value at the end of Q2 2026
- $60.4B
- Superinvestors holdingAt the end of Q2 2026
- 1
Price chart
Superinvestors holding BSX, Q2 2026
1 superinvestor reports holding Boston Scientific Corp on Form 13F. Percentages are the stock's share of each portfolio.
Maverick Capital
Lee Ainslie
2.3%
Boston Scientific Corp's share of the portfolio
- Shares
- 5,937,553
- Value
- $253.4M
Latest insider trades
Open-market purchases and sales by Boston Scientific Corp insiders from Form 4, newest first.
| Filed (ET) | Trade date | Filing delay | Insider | Transaction | Shares | Avg price | Value | Holding change | Flags |
|---|---|---|---|---|---|---|---|---|---|
| Aug 26, 2026 (view filing)6:46 PM ET | Aug 25 | 1 day | Morano Susan EDirector | PPurchase | +2.04K | $49.22 | +$100.4K | +17.4%13.8K after | |
| Aug 7, 2026 (view filing)4:16 PM ET | Aug 5 | 2 days | Habiger David CDirector | PPurchase | +2.10K | $47.59 | +$99.9K | +13.9%17.2K after | |
| Aug 5, 2026 (view filing)4:15 PM ET | Aug 3-4 | 2 days | Habiger David CDirector | PPurchase | +1.18K | $48.13 | +$56.9K | +8.5%15.1K after | 2 lots |
| Aug 5, 2026 (view filing)4:15 PM ET | Aug 3 | 2 days | Mahoney Michael FChairman, President & CEO | PPurchase | +186.2K | $48.33 | +$9.00M | +13.3%1.59M after | |
| Aug 3, 2026 (view filing)4:29 PM ET | Jul 31 | 3 days | Ludwig Edward JDirector | PPurchase | +5.00K | $45.48 | +$227.4K | +19.7%30.4K after | |
| May 21, 2026 (view filing) | May 20 | 1 day | Pegus CherylDirector | PPurchase | +1.77K | $56.49 | +$100.0K | New position1.77K after | |
| May 21, 2026 (view filing) | May 20 | 1 day | Ludwig Edward JDirector | PPurchase | +3.58K | $56.68 | +$202.9K | +16.4%25.4K after | |
| May 21, 2026 (view filing) | May 19-20 | 2 days | Habiger David CDirector | PPurchase | +4.45K | $56.43 | +$251.1K | +47.2%13.9K after | 2 lots |
| Feb 3, 2026 (view filing) | Feb 2 | 1 day | Mahoney Michael FChairman, President & CEO | SSale | −160.9K | $93.49 | −$15.0M | −10.2%1.41M after | 2 lots10b5-1 |
| Dec 2, 2025 (view filing) | Dec 1 | 1 day | Butcher Arthur CEVP& Grp Pres, MedSurg & APAC | SSale | −17.3K | $101.55 | −$1.76M | −42.3%23.6K after | 10b5-1 |
Top 10 13F holders, Q2 2026
The largest institutional positions in Boston Scientific Corp at the end of Q2 2026; share changes are against Q1 2026.
| Institution | Shares | Value | % of portfolio | Change in shares | Action |
|---|---|---|---|---|---|
| BlackRock, Inc. | 129,680,916 | $5.53B | 0.08% | −2,141,121−1.6% | Reduced |
| Vanguard Capital Management LLC | 97,087,553 | $4.14B | 0.09% | +675,985+0.7% | Added |
| State Street Corp | 70,111,196 | $2.99B | 0.09% | +2,124,349+3.1% | Added |
| Banque Cantonale Vaudoise | 67,611 | $2.89B | 0.40% | +1,288+1.9% | Added |
| Primecap Management Co | 50,520,914 | $2.16B | 1.28% | +17,991,140+55.3% | Added |
| FMR LLC | 45,702,845 | $1.95B | 0.08% | −28,523,550−38.4% | Reduced |
| Massachusetts Financial Services Co | 24,859,191 | $1.50B | 0.48% | +13,862,619+126.1% | Added |
| Geode Capital Management, LLC | 33,440,102 | $1.42B | 0.08% | +154,345+0.5% | Added |
| Vanguard Portfolio Management LLC | 29,792,794 | $1.27B | 0.06% | −3,4170.0% | Reduced |
| D. E. Shaw & Co., Inc. | 25,457,409 | $1.09B | 0.67% | +1,145,057+4.7% | Added |