BlackRock’s Boston Scientific BSX Stock Holding History

BlackRock’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
2025 Q3	–	Sell	-352,400	Closed	-$37.9M	–	5470
2025 Q2	$37.9M	Buy	+352,400	New	+$35.7M	﹤0.01%	2619
2024 Q4	–	Sell	-957,500	Closed	-$80.2M	–	5398
2024 Q3	$80.2M	Buy	957,500 +157,500	+20%	+$12.4M	﹤0.01%	2205
2024 Q2	$61.6M	Buy	+800,000	New	+$58.6M	﹤0.01%	2297
2024 Q1	–	Sell	-478,500	Closed	-$27.7M	–	5290
2023 Q4	$27.7M	Buy	+478,500	New	+$25.5M	﹤0.01%	2820
2023 Q3	–	Sell	-1,242,000	Closed	-$67.2M	–	5460
2023 Q2	$67.2M	Buy	+1,242,000	New	+$64.9M	﹤0.01%	2305
2020 Q3	–	Sell	-724,700	Closed	-$25.4M	–	5045
2020 Q2	$25.4M	Sell	724,700 -21,900	-3%	-$789K	﹤0.01%	2671
2020 Q1	$24.4M	Buy	+746,600	New	+$29.2M	﹤0.01%	2497

Other funds holding BSX

VCM

Vanguard Capital Management Malvern, Pennsylvania $4.04T AUM

Fidelity Investments Boston, Massachusetts $1.9T AUM 41.92% 1-Year Est. Return

State Street Boston, Massachusetts $2.9T AUM 29.55% 1-Year Est. Return

JP Morgan Chase New York $1.56T AUM 27.86% 1-Year Est. Return

Geode Capital Management Boston, Massachusetts $1.61T AUM 30.72% 1-Year Est. Return

Primecap Management Pasadena, California $127B AUM 44.11% 1-Year Est. Return

VPM

Vanguard Portfolio Management Malvern, Pennsylvania $1.91T AUM

D.E. Shaw & Co New York $166B AUM 43.98% 1-Year Est. Return

Bank of America Charlotte, North Carolina $1.37T AUM 24.88% 1-Year Est. Return

Morgan Stanley New York $1.66T AUM 25.57% 1-Year Est. Return

BlackRock's BSX Position: Q1 2026 in Review

BlackRock reduced its Boston Scientific (BSX) stake by 3.1% in Q1 2026, selling an estimated $333M and leaving 131,822,037 shares worth $8.27B. The position accounts for 0.14% of the portfolio, ranked #118.

BlackRock first reported a position in BSX in Q2 2013 and has held it in 52 quarters since. The position peaked at $15.8B in Q2 2025. 1,664 funds tracked by Wall St. Rank hold BSX as of Q1 2026.

BlackRock held 131,822,037 shares of Boston Scientific worth $8.27B as of Q1 2026.
BlackRock sold 4,165,208 Boston Scientific shares in Q1 2026, an estimated $333M.
Boston Scientific made up 0.14% of BlackRock's portfolio in Q1 2026, its #118 holding.
BlackRock first reported a position in Boston Scientific in Q2 2013 and has held it in 52 quarters since.
BlackRock's Boston Scientific position peaked at $15.8B in Q2 2025.
1,664 funds tracked by Wall St. Rank held Boston Scientific as of Q1 2026.

Based on BlackRock's 13F filing for Q1 2026, filed 13 May 2026.