Mawer Investment Management
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Mawer Investment Management’s Boston Scientific BSX Stock Holding History

Mawer Investment 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
Q2 		$22.6M Sell
530,533
-59,126
-10% -$3.21M 0.15% 84
2026
Q1 		$37M Buy
589,659
+543,460
+1,176% +$43.5M 0.24% 70
2025
Q4 		$4.41M Buy
+46,199
New +$4.53M 0.02% 111

Other funds holding BSX

BlackRock
BlackRock New York $6.73T AUM 46.02% 1-Year Est. Return
State Street
State Street Boston, Massachusetts $3.37T AUM 44.26% 1-Year Est. Return
Massachusetts Financial Services
Massachusetts Financial Services Boston, Massachusetts $315B AUM 27.84% 1-Year Est. Return
Bank of New York Mellon
Bank of New York Mellon New York $609B AUM 40.19% 1-Year Est. Return
Deutsche Bank
Deutsche Bank Frankfurt Am Main Ge, Germany $344B AUM 42.99% 1-Year Est. Return
Vontobel Holding
Vontobel Holding Zurich, Switzerland $31.4B AUM 31.97% 1-Year Est. Return
Assenagon Asset Management
Assenagon Asset Management Senningerberg, Luxembourg $80.2B AUM 50.57% 1-Year Est. Return
SG Americas Securities
SG Americas Securities New York $179B AUM 65.34% 1-Year Est. Return
Mitsubishi UFJ Asset Management
Mitsubishi UFJ Asset Management Tokyo, Japan $180B AUM 37.51% 1-Year Est. Return
Ninety One (UK)
Ninety One (UK) London, United Kingdom $44.7B AUM 17.24% 1-Year Est. Return

Mawer Investment Management's BSX Position: Q2 2026 in Review

Mawer Investment Management reduced its Boston Scientific (BSX) stake by 10% in Q2 2026, selling an estimated $3.21M and leaving 530,533 shares worth $22.6M. The position accounts for 0.15% of the portfolio, ranked #84.

Mawer Investment Management first reported a position in BSX in Q4 2025 and has held it in 3 quarters since. The position peaked at $37M in Q1 2026. 770 funds tracked by Wall St. Rank hold BSX as of Q2 2026.

  • Mawer Investment Management held 530,533 shares of Boston Scientific worth $22.6M as of Q2 2026.
  • Mawer Investment Management sold 59,126 Boston Scientific shares in Q2 2026, an estimated $3.21M.
  • Boston Scientific made up 0.15% of Mawer Investment Management's portfolio in Q2 2026, its #84 holding.
  • Mawer Investment Management first reported a position in Boston Scientific in Q4 2025 and has held it in 3 quarters since.
  • Mawer Investment Management's Boston Scientific position peaked at $37M in Q1 2026.
  • 770 funds tracked by Wall St. Rank held Boston Scientific as of Q2 2026.

Based on Mawer Investment Management's 13F filing for Q2 2026, filed 7 Aug 2026.