BSX in the 13F filings
Boston Scientific Corp · CUSIP 101137107
- Quarter end
- 30 Jun 2026
- the date the book describes
- Filed
- 27 Oct 2026
- latest of these filings; the earliest 3 Aug 2026
- Managers listing it
- 46
- at least, of 95 tracked, among listed positions
- Comparable managers
- 91
- filed both Q1 2026 and Q2 2026; 41 listed it in both
- Shares listed
- 301,628,684
- combined, among listed positions
- Reported value
- $13.3bn
- combined, at the quarter end
2 lines marked †. Value as filed implies a price far from other filers'. Each counts in holders and value as filed, and is left out of the net change in shares.
AllianceBernstein LP. Values in this filing are at the previous quarter end's prices; its share count is the quarter end's.
Among the 91 comparable managers: 30 buyers (opened or added shares) and 21 sellers (trimmed or exited), at least, among listed positions. Their net change in shares was +11,498,241.
Managers listing BSX in Q2 2026
46 of 46 holders
Largest increases and reductions, by shares
Increases
- MFS Investment Managementexisting position · 24,859,191 shares now+13,862,619
- Two Sigma Investments LPexisting position · 19,359,023 shares now+9,947,792
- Arrowstreet Capital LPexisting position · 23,293,913 shares now+9,402,245
- Jane Street Group LLCexisting position · 12,087,991 shares now+8,055,874
- Capital Research Global Investorsexisting position · 14,180,571 shares now+7,099,684
Reductions
- Fidelity (FMR LLC)existing position · 45,702,845 shares now-28,523,550
- Neuberger Berman Group LLCexisting position · 2,126,406 shares now-4,946,488
- Wellington Management Group LLPexisting position · 15,301,828 shares now-3,531,578
- Point72 Asset Management LPexisting position · 365,241 shares now-3,322,074
- Holocene Advisors LPexisting position · 806,732 shares now-2,622,004
New positions and exits
New (3)
Exited (5)
- Rokos Capital Management LLPwas $8.8m
- Lone Pine Capital LLCwas $6.6m
- Winton Group Ltdwas $5.2m
- Davidson Kempner Capital Management LPwas $4.0m
- Caxton Associates LLPwas $342k
Ownership over time
Compare with…
Holders over time, buyers and sellers, and the managers holding both, side by side for up to four stocks.
BSX and LLY →BSX and JNJ →BSX and VRTX →Choose a stock to compare with BSX →
How much of the picture this is
A 13F is a manager’s long US-listed equity book at a quarter end, filed up to 45 days later. It shows no shorts, cash, bonds or performance, and it is never today’s portfolio. Large books are listed to their largest positions, so a manager missing from this table may still hold a small position below that line. These are 95 tracked managers, not the institutional market.
Which funds own BSX, latest filings →Back to the 13F Explorer →