Boston Scientific BSX Institutional Ownership

NYSE BSX

$45.40 +0.42 (+0.93%)

As of: Sep 9, 2026 · 11:32 AM EDT

Institutions by Trading Activity

1,473 Institutions

Increased 733 49.8%

Unchanged 131 8.9%

Reduced 609 41.3%

Ownership Statistics

13F · as of 30 Jun, 2026

Institutional Ownership

91.19%

▼-0.23 pp QoQ

Shares Held by Institutions

1.34Bn

of 1.47Bn outstanding

▲+3.14% QoQ

Shares Outstanding

1.47Bn

129.55Mn held outside 13F filers

Institutional Investors

1,473

filed 13F for Jun 2026

▼-196 vs prior quarter

Net Shares Added (QoQ)

+40.84Mn

accumulated since last quarter

Value of Holdings

$64.10Bn

reported market value

Shares Owned by Institutions

Shares held % of outstanding

Latest —

Average ownership —

Peak ownership —

Shares Purchased/Sold by Institutions

Accumulated Distributed

Latest quarter —

Net over range —

Accumulating quarters —

Ownership Summary

Quarter ending 30 Jun, 2026

Boston Scientific Corp (NYSE:BSX) has 1,473 institutional investors with active 13F positions as of June 2026.

Their combined ownership stood at 91.2% of outstanding shares in June 2026, down from 91.4% in March 2026.
They increased total shares held in Boston Scientific by 3.14% from the prior quarter, while the number of investors in BSX decreased 13.15% year over year.
Of these 1,473 funds, 733 grew their exposure to Boston Scientific, 609 cut back, and 131 maintained positions.
Institutional investors collectively held 1.34Bn shares in Boston Scientific as of June 2026, up by 40.84Mn shares quarter on quarter, and down 15.59Mn shares year over year.
BlackRock, Inc. holds the largest position in BSX at 129.68Mn shares as of June 30, 2026, or 8.82% of shares outstanding.
The most significant purchases of BSX for the quarter ending June 2026 came from NORGES BANK (21.17Mn), Jupiter Topco LLC (18.82Mn), PRIMECAP MANAGEMENT CO/CA/ (17.99Mn), MASSACHUSETTS FINANCIAL SERVICES CO /MA/ (13.86Mn), TWO SIGMA INVESTMENTS, LP (9.95Mn).
Leading sellers of Boston Scientific shares for the quarter ending June 2026 were FMR LLC (28.52Mn), Bank Of America Corp /De/ (9.73Mn), Jpmorgan Chase & Co (9.44Mn), PARNASSUS INVESTMENTS, LLC (6.83Mn), Assenagon Asset Management S.A. (5.88Mn).
According to Business Quant data, leading holders of BSX for June 2026 are BlackRock, Inc. (129.68Mn), VANGUARD CAPITAL MANAGEMENT LLC (97.09Mn), State Street Corp (70.11Mn), PRIMECAP MANAGEMENT CO/CA/ (50.52Mn), FMR LLC (45.7Mn), GEODE CAPITAL MANAGEMENT, LLC (33.44Mn), VANGUARD PORTFOLIO MANAGEMENT LLC (29.79Mn), D. E. Shaw & Co., Inc. (25.46Mn), MASSACHUSETTS FINANCIAL SERVICES CO /MA/ (24.86Mn), Jpmorgan Chase & Co (23.91Mn).

Form 13F Holdings

1,473 Institutional Holders

Report period 30 Jun, 2026

Total shares held 1.34Bn

Of outstanding 91.19%

#	Institution	CIK	Shares Held	% of Outstanding	Change (QoQ)	Change (%)	Value (USD)
1	BlackRock, Inc.	0002012383	129,680,916	8.82%	▼2,141,121	-1.62%	$5.53Bn
2	VANGUARD CAPITAL MANAGEMENT LLC	0002100119	97,087,553	6.60%	▲675,985	+0.70%	$4.14Bn
3	State Street Corp	0000093751	70,111,196	4.77%	▲2,124,349	+3.12%	$2.99Bn
4	PRIMECAP MANAGEMENT CO/CA/	0000763212	50,520,914	3.44%	▲17,991,140	+55.31%	$2.16Bn
5	FMR LLC	0000315066	45,702,845	3.11%	▼28,523,550	-38.43%	$1.95Bn
6	GEODE CAPITAL MANAGEMENT, LLC	0001214717	33,440,102	2.27%	▲154,345	+0.46%	$1.42Bn
7	VANGUARD PORTFOLIO MANAGEMENT LLC	0002100121	29,792,794	2.03%	▼3,417	-0.01%	$1.27Bn
8	D. E. Shaw & Co., Inc.	0001009207	25,457,409	1.73%	▲1,145,057	+4.71%	$1.09Bn
9	MASSACHUSETTS FINANCIAL SERVICES CO /MA/	0000912938	24,859,191	1.69%	▲13,862,619	+126.06%	$1.50Bn
10	Jpmorgan Chase & Co	0000019617	23,907,838	1.63%	▼9,442,319	-28.31%	$1.04Bn
11	ARROWSTREET CAPITAL, LIMITED PARTNERSHIP	0001164508	23,293,913	1.58%	▲9,402,245	+67.68%	$994.18Mn
12	NORGES BANK	0001374170	21,170,029	1.44%	▲21,170,029	0.00%	$903.54Mn
13	TWO SIGMA INVESTMENTS, LP	0001179392	19,359,023	1.32%	▲9,947,792	+105.70%	$826.24Mn
14	Morgan Stanley	0000895421	18,947,147	1.29%	▼3,319,517	-14.91%	$808.66Mn
15	Jupiter Topco LLC	0002146052	18,822,853	1.28%	▲18,822,853	0.00%	$803.36Mn
16	Bollard Group LLC	0001556218	18,420,720	1.25%	▼111,453	-0.60%	$786.20K
17	Goldman Sachs Group Inc	0000886982	16,954,342	1.15%	▼1,937,282	-10.25%	$723.61Mn
18	Capital World Investors	0001422849	16,812,257	1.14%	▲1,502,519	+9.81%	$717.60Mn
19	UBS Group AG	0001610520	16,352,420	1.11%	▲1,527,758	+10.31%	$697.92Mn
20	WELLINGTON MANAGEMENT GROUP LLP	0000902219	15,301,828	1.04%	▼3,531,578	-18.75%	$653.08Mn

Showing 1 to 20 of 1,473 holders