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 $57.3B in total; Maverick Capital is the only superinvestor holding it.
Holders of 5% or more of BSX
Holders whose latest Schedule 13D or 13G filing reports 5% or more of Boston Scientific Corp, largest stake first. The change is against the holder's previous filing.
| Holder | Latest form | Stake | Change | First filed | Latest filing | Filing |
|---|---|---|---|---|---|---|
| BlackRock, Inc. | 13G/A | 7.60%113.0M shares | – | Apr 17, 20251 filing | Apr 17, 2025 | SEC |
| FMR LLC | 13G/A | 7.50%110.3M shares | −2.10 ppfrom 9.60% | Apr 7, 20252 filings | Aug 6, 2025 | SEC |
Stakes are as of each holder's latest filing. Holders whose last filing was in the old format (before December 18, 2024) have no stake on record and are not listed, and after an acquisition or delisting holders usually stop filing.
13D and 13G filings
4 Schedule 13D and 13G filings on Boston Scientific Corp, newest first, including old-format filings without a stake.
| Filed (ET) | Filer | Form | Stake | Change | Event date | Filing |
|---|---|---|---|---|---|---|
| Mar 26, 20264:44 PM ET | Vanguard Group Inc | 13G/A | 0.00%0 shares | –Below 5% | Mar 13, 2026 | SEC |
| Aug 6, 202512:23 PM ET | FMR LLCand 1 other | 13G/A | 7.50%110.3M shares | −2.10 ppfrom 9.60% | Jun 30, 2025 | SEC |
| Apr 17, 20259:35 AM ET | BlackRock, Inc. | 13G/A | 7.60%113.0M shares | – | Mar 31, 2025 | SEC |
| Apr 7, 202510:14 AM ET | FMR LLCand 1 other | 13G/A | 9.60%141.1M shares | – | Dec 29, 2023 | SEC |
Form 144: proposed insider sales
Notices from officers, directors and other affiliates planning to sell Boston Scientific Corp shares.
No Form 144 notices for Boston Scientific Corp are on file.