How many shares of BSX does MARSHALL WACE, LLP own?

As of 2026-Q2, MARSHALL WACE, LLP holds 2.4M shares of BSX (BOSTON SCIENTIFIC CORP).

What is MARSHALL WACE, LLP's BSX position worth?

As of 2026-Q2, MARSHALL WACE, LLP's BSX position is worth $103M.

In 2026-Q2, MARSHALL WACE, LLP decreased their BSX position (-33.1% change in shares).

Based on available 13F filings, MARSHALL WACE, LLP first reported a position in BSX in 2018-Q4. They have held the position across 31 quarters.

Position history for MWMARSHALL WACE, LLP's holdings in BOSTON SCIENTIFIC CORP

Current Value

$103M

Current Shares

2.4M

Total Value Change

+$58.7M

Total Shares Change

+1.2M

Quarter-by-Quarter History

Quarter	Action	Shares	Change	Value	Weight	Price	Conviction
2026-Q2 Latest	Decreased	2.4M	-33.1%	$103M	0.1%	$42.68	0
2026-Q1	Increased	3.6M	+22.1%	$226.6M	0.2%	$73.85	44
2025-Q4	Decreased	3M	-69.8%	$282M	0.3%	$96.01	0
2025-Q3	Increased	9.8M	+30.7%	$956.7M	1.0%	$97.04	57
2025-Q2	Decreased	7.5M	-5.7%	$805.3M	0.9%	$106.53	0
2025-Q1	Decreased	7.9M	-10.3%	$801.8M	1.0%	$99.36	0
2024-Q4	Increased	8.9M	+7.6%	$791.9M	1.0%	$89.68	48
2024-Q3	Increased	8.2M	+22.6%	$690.6M	0.8%	$83.35	54
2024-Q2	Increased	6.7M	+115.9%	$517.5M	0.7%	$77.01	71
2024-Q1	Increased	3.1M	+92.4%	$213.2M	0.3%	$68.49	58
2023-Q4	Decreased	1.6M	-57.5%	$93.5M	0.2%	$57.81	0
2023-Q3	Increased	3.8M	+102.1%	$200.8M	0.4%	$52.80	59
2023-Q2	Decreased	1.9M	-55.5%	$101.8M	0.2%	$53.29	0
2023-Q1	Decreased	4.2M	-27.3%	$211.8M	0.4%	$49.60	0
2022-Q4	Decreased	5.8M	-42.3%	$269.4M	0.6%	$46.27	0
2022-Q3	Decreased	10.1M	-3.7%	$390.8M	0.9%	$39.34	0
2022-Q2	Increased	10.5M	+9.8%	$390.6M	0.8%	$37.80	48
2022-Q1	Increased	9.5M	+50.1%	$422.5M	0.8%	$44.70	61
2021-Q4	Increased	6.4M	+572.2%	$270.1M	0.5%	$42.99	59
2021-Q3	Decreased	945,858	-3.0%	$41M	0.2%	$43.89	0
2021-Q2	Increased	974,801	+138.1%	$41.7M	0.2%	$43.23	56
2021-Q1	Decreased	409,374	-44.3%	$15.8M	0.1%	$38.96	0
2020-Q4	Increased	735,082	+52.7%	$26.4M	0.1%	$35.55	48
2020-Q3	Decreased	481,284	-88.7%	$18.4M	0.1%	$37.76	0
2020-Q2	Increased	4.2M	+13.6%	$148.9M	1.0%	$34.65	54
2020-Q1	Decreased	3.7M	-54.3%	$121.9M	1.2%	$31.64	0
2019-Q4	Decreased	8.2M	-3.5%	$369.5M	2.5%	$44.99	0
2019-Q3	Decreased	8.5M	-11.3%	$344.4M	2.7%	$40.31	0
2019-Q2	Increased	9.5M	+8.1%	$410.3M	3.4%	$42.98	62
2019-Q1	Increased	8.8M	+603.0%	$338.8M	1.6%	$38.38	79
2018-Q4	New	1.3M	-	$44.4M	0.5%	$34.67	48