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
Q3 		$6.95M Sell
159,200
-960,100
-86% -$44.5M 0.01% 672
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 $6.79T AUM 37.06% 1-Year Est. Return
Vanguard Capital Management
Vanguard Capital Management Malvern, Pennsylvania $4.76T AUM
State Street
State Street Boston, Massachusetts $3.44T AUM 36.12% 1-Year Est. Return
Primecap Management
Primecap Management Pasadena, California $161B AUM 86.05% 1-Year Est. Return
Massachusetts Financial Services
Massachusetts Financial Services Boston, Massachusetts $296B AUM 23.14% 1-Year Est. Return
Vanguard Portfolio Management
Vanguard Portfolio Management Malvern, Pennsylvania $2.21T AUM
Fidelity Investments
Fidelity Investments Boston, Massachusetts $2.32T AUM 44.66% 1-Year Est. Return
Geode Capital Management
Geode Capital Management Boston, Massachusetts $1.92T AUM 36.1% 1-Year Est. Return
Capital World Investors
Capital World Investors Los Angeles, California $824B AUM 37.44% 1-Year Est. Return
Arrowstreet Capital
Arrowstreet Capital Boston, Massachusetts $234B AUM 43.58% 1-Year Est. Return

PEAK6's BSX Position: Q3 2026 in Review

PEAK6 reduced its Boston Scientific (BSX) stake by 82% in Q3 2026, selling an estimated $26.1M and leaving 120,902 shares worth $5.28M. The position accounts for 0.01% of the portfolio, ranked #774.

PEAK6 first reported a position in BSX in Q4 2025 and has held it in 4 quarters since. The position peaked at $29.2M in Q2 2026. 1,274 funds tracked by Wall St. Rank hold BSX as of Q3 2026.

  • PEAK6 held 120,902 shares of Boston Scientific worth $5.28M as of Q3 2026.
  • PEAK6 sold 562,906 Boston Scientific shares in Q3 2026, an estimated $26.1M.
  • Boston Scientific made up 0.01% of PEAK6's portfolio in Q3 2026, its #774 holding.
  • PEAK6 first reported a position in Boston Scientific in Q4 2025 and has held it in 4 quarters since.
  • PEAK6's Boston Scientific position peaked at $29.2M in Q2 2026.
  • 1,274 funds tracked by Wall St. Rank held Boston Scientific as of Q3 2026.

Based on PEAK6's 13F filing for Q3 2026, filed 13 Nov 2026.