Senator Investment Group’s Boston Scientific BSX Stock Holding History

Senator Investment Group’s Portfolio BSX Stock Details BSX Fund Activity

Bought

Maintained

Sold

Quarter	Market Value	Status	Shares	Change in Stake	Trade Value	Portfolio Weight	Portfolio Position
2026 Q2	$12.8M	Buy	+300,000	New	+$16.3M	0.47%	41
2025 Q1	–	Sell	-450,000	Closed	-$40.2M	–	52
2024 Q4	$40.2M	Hold	450,000	–	–	1.18%	31
2024 Q3	$37.7M	Sell	450,000 -100,000	-18%	-$7.88M	1.79%	28
2024 Q2	$42.4M	Hold	550,000	–	–	2.07%	19
2024 Q1	$37.7M	Sell	550,000 -50,000	-8%	-$3.21M	1.71%	22
2023 Q4	$34.7M	Buy	600,000 +200,000	+50%	+$10.7M	1.49%	23
2023 Q3	$21.1M	Sell	400,000 -475,000	-54%	-$24.9M	1.19%	30
2023 Q2	$47.3M	Buy	875,000 +375,000	+75%	+$19.6M	2.13%	18
2023 Q1	$25M	Buy	+500,000	New	+$23.6M	1.37%	28
2020 Q3	–	Sell	-1,750,000	Closed	-$61.4M	–	61
2020 Q2	$61.4M	Sell	1,750,000 -2,150,000	-55%	-$77.4M	2.12%	24
2020 Q1	$127M	Buy	3,900,000 +2,150,000	+123%	+$84M	4.61%	8
2019 Q4	$79.1M	Sell	1,750,000 -2,050,000	-54%	-$85.8M	2.17%	23
2019 Q3	$155M	Sell	3,800,000 -950,000	-20%	-$40.2M	3.88%	7
2019 Q2	$204M	Sell	4,750,000 -250,000	-5%	-$9.62M	3.75%	6
2019 Q1	$192M	Sell	5,000,000 -500,000	-9%	-$19.1M	4.33%	6
2018 Q4	$194M	Sell	5,500,000 -1,500,000	-21%	-$54.4M	5.42%	6
2018 Q3	$270M	Sell	7,000,000 -958,672	-12%	-$33.5M	3.47%	11
2018 Q2	$260M	Sell	7,958,672 -291,328	-4%	-$8.79M	2.59%	16
2018 Q1	$225M	Buy	+8,250,000	New	+$224M	2.68%	15

Other funds holding BSX

BlackRock New York $6.73T AUM 46.02% 1-Year Est. Return

Vanguard Capital Management Malvern, Pennsylvania $4.68T AUM

State Street Boston, Massachusetts $3.37T AUM 44.26% 1-Year Est. Return

Primecap Management Pasadena, California $169B AUM 114.72% 1-Year Est. Return

Fidelity Investments Boston, Massachusetts $2.3T AUM 54.33% 1-Year Est. Return

Massachusetts Financial Services Boston, Massachusetts $315B AUM 27.84% 1-Year Est. Return

Geode Capital Management Boston, Massachusetts $1.88T AUM 44.46% 1-Year Est. Return

Vanguard Portfolio Management Malvern, Pennsylvania $2.22T AUM

D.E. Shaw & Co New York $210B AUM 57.28% 1-Year Est. Return

JP Morgan Chase New York $1.81T AUM 41.13% 1-Year Est. Return

Senator Investment Group's BSX Position: Q2 2026 in Review

Senator Investment Group opened a new position in Boston Scientific (BSX) in Q2 2026: 300,000 shares worth $12.8M. The stake represents 0.47% of the portfolio and ranks #41 among its holdings. This is a return to the name: Senator Investment Group previously reported a position in BSX as recently as Q4 2024.

Senator Investment Group first reported a position in BSX in Q1 2018 and has held it in 19 quarters since. The position peaked at $270M in Q3 2018. 1,477 funds tracked by Wall St. Rank hold BSX as of Q2 2026.

Senator Investment Group held 300,000 shares of Boston Scientific worth $12.8M as of Q2 2026.
Boston Scientific was a new Senator Investment Group position in Q2 2026.
Boston Scientific made up 0.47% of Senator Investment Group's portfolio in Q2 2026, its #41 holding.
Senator Investment Group first reported a position in Boston Scientific in Q1 2018 and has held it in 19 quarters since.
Senator Investment Group's Boston Scientific position peaked at $270M in Q3 2018.
1,477 funds tracked by Wall St. Rank held Boston Scientific as of Q2 2026.

Based on Senator Investment Group's 13F filing for Q2 2026, filed 12 Aug 2026.