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Osterweis Capital Management’s Boston Scientific BSX Stock Holding History

Osterweis Capital Management’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
Q1 		$27.7M Buy
442,192
+172,712
+64% +$13.8M 1.43% 29
2025
Q4 		$25.7M Sell
269,480
-14,722
-5% -$1.44M 1.09% 36
2025
Q3 		$27.7M Buy
284,202
+994
+0.4% +$103K 1.25% 32
2025
Q2 		$30.4M Buy
283,208
+3,865
+1% +$391K 1.46% 28
2025
Q1 		$28.2M Sell
279,343
-52,069
-16% -$5.24M 1.39% 27
2024
Q4 		$29.6M Sell
331,412
-19,109
-5% -$1.68M 1.38% 25
2024
Q3 		$29.4M Sell
350,521
-47,822
-12% -$3.77M 1.49% 23
2024
Q2 		$30.7M Sell
398,343
-49,518
-11% -$3.62M 1.59% 22
2024
Q1 		$30.7M Sell
447,861
-77,404
-15% -$4.98M 1.8% 23
2023
Q4 		$30.4M Buy
525,265
+1,215
+0.2% +$64.9K 1.93% 21
2023
Q3 		$27.7M Sell
524,050
-22,420
-4% -$1.18M 2.03% 17
2023
Q2 		$29.6M Sell
546,470
-4,340
-0.8% -$227K 1.96% 20
2023
Q1 		$27.6M Sell
550,810
-104,155
-16% -$4.91M 1.87% 18
2022
Q4 		$30.3M Buy
654,965
+1,355
+0.2% +$58.7K 2.2% 11
2022
Q3 		$25.3M Sell
653,610
-26,065
-4% -$1.05M 1.9% 15
2022
Q2 		$25.3M Buy
679,675
+153,700
+29% +$6.26M 1.9% 18
2022
Q1 		$23.3M Buy
525,975
+3,415
+0.7% +$148K 1.28% 22
2021
Q4 		$22.2M Buy
522,560
+20,790
+4% +$874K 1.11% 29
2021
Q3 		$21.8M Buy
+501,770
New +$22.2M 1.19% 29

Other funds holding BSX

BlackRock
BlackRock New York $5.72T AUM 30.48% 1-Year Est. Return
VCM
Vanguard Capital Management Malvern, Pennsylvania $4.04T AUM
Fidelity Investments
Fidelity Investments Boston, Massachusetts $1.9T AUM 41.92% 1-Year Est. Return
State Street
State Street Boston, Massachusetts $2.9T AUM 29.55% 1-Year Est. Return
JP Morgan Chase
JP Morgan Chase New York $1.56T AUM 27.86% 1-Year Est. Return
Geode Capital Management
Geode Capital Management Boston, Massachusetts $1.61T AUM 30.72% 1-Year Est. Return
Primecap Management
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
D.E. Shaw & Co New York $166B AUM 43.98% 1-Year Est. Return
Bank of America
Bank of America Charlotte, North Carolina $1.37T AUM 24.88% 1-Year Est. Return

Osterweis Capital Management's BSX Position: Q1 2026 in Review

Osterweis Capital Management increased its Boston Scientific (BSX) stake by 64% in Q1 2026, buying an estimated $13.8M and bringing the position to 442,192 shares worth $27.7M. The position accounts for 1.43% of the portfolio, ranked #29.

Osterweis Capital Management first reported a position in BSX in Q3 2021 and has held it in 19 quarters since. The position peaked at $30.7M in Q2 2024. 1,666 funds tracked by Wall St. Rank hold BSX as of Q1 2026.

  • Osterweis Capital Management held 442,192 shares of Boston Scientific worth $27.7M as of Q1 2026.
  • Osterweis Capital Management bought 172,712 Boston Scientific shares in Q1 2026, an estimated $13.8M.
  • Boston Scientific made up 1.43% of Osterweis Capital Management's portfolio in Q1 2026, its #29 holding.
  • Osterweis Capital Management first reported a position in Boston Scientific in Q3 2021 and has held it in 19 quarters since.
  • Osterweis Capital Management's Boston Scientific position peaked at $30.7M in Q2 2024.
  • 1,666 funds tracked by Wall St. Rank held Boston Scientific as of Q1 2026.

Based on Osterweis Capital Management's 13F filing for Q1 2026, filed 15 May 2026.