PEAK6
BSX icon

PEAK6’s Boston Scientific BSX Stock Holding History

PEAK6’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 		$47.8M Buy
1,119,300
+1,053,100
+1,591% +$57.2M 0.1% 175
2026
Q1 		$4.15M Buy
66,200
+24,300
+58% +$1.94M 0.01% 992
2025
Q4 		$4M Sell
41,900
-5,100
-11% -$500K 0.01% 1056
2025
Q3 		$4.59M Buy
47,000
+3,500
+8% +$362K 0.01% 1070
2025
Q2 		$4.67M Sell
43,500
-56,700
-57% -$5.74M 0.01% 1001
2025
Q1 		$10.1M Buy
100,200
+34,100
+52% +$3.43M 0.02% 601
2024
Q4 		$5.9M Buy
+66,100
New +$5.82M 0.01% 818

Other funds holding BSX

BlackRock
BlackRock New York $6.73T AUM 46.02% 1-Year Est. Return
Vanguard Capital Management
Vanguard Capital Management Malvern, Pennsylvania $4.68T AUM
State Street
State Street Boston, Massachusetts $3.37T AUM 44.26% 1-Year Est. Return
Primecap Management
Primecap Management Pasadena, California $169B AUM 114.72% 1-Year Est. Return
Fidelity Investments
Fidelity Investments Boston, Massachusetts $2.3T AUM 54.33% 1-Year Est. Return
Massachusetts Financial Services
Massachusetts Financial Services Boston, Massachusetts $315B AUM 27.84% 1-Year Est. Return
Geode Capital Management
Geode Capital Management Boston, Massachusetts $1.88T AUM 44.46% 1-Year Est. Return
Vanguard Portfolio Management
Vanguard Portfolio Management Malvern, Pennsylvania $2.22T AUM
D.E. Shaw & Co
D.E. Shaw & Co New York $210B AUM 57.28% 1-Year Est. Return
JP Morgan Chase
JP Morgan Chase New York $1.81T AUM 41.13% 1-Year Est. Return

PEAK6's BSX Position: Q2 2026 in Review

PEAK6 increased its Boston Scientific (BSX) stake by 2,461% in Q2 2026, buying an estimated $35.7M and bringing the position to 683,808 shares worth $29.2M. The position accounts for 0.06% of the portfolio, ranked #258.

PEAK6 first reported a position in BSX in Q4 2025 and has held it in 3 quarters since. 1,477 funds tracked by Wall St. Rank hold BSX as of Q2 2026.

  • PEAK6 held 683,808 shares of Boston Scientific worth $29.2M as of Q2 2026.
  • PEAK6 bought 657,108 Boston Scientific shares in Q2 2026, an estimated $35.7M.
  • Boston Scientific made up 0.06% of PEAK6's portfolio in Q2 2026, its #258 holding.
  • PEAK6 first reported a position in Boston Scientific in Q4 2025 and has held it in 3 quarters since.
  • 1,477 funds tracked by Wall St. Rank held Boston Scientific as of Q2 2026.

Based on PEAK6's 13F filing for Q2 2026, filed 13 Aug 2026.