Massachusetts Financial Services
BSX icon

Massachusetts Financial Services’s Boston Scientific BSX Stock Holding History

Massachusetts Financial Services’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 		$717M Buy
10,996,572
+1,911,044
+21% +$153M 0.24% 109
2025
Q4 		$866M Sell
9,085,528
-1,281,765
-12% -$126M 0.28% 97
2025
Q3 		$1.01B Sell
10,367,293
-2,491,865
-19% -$258M 0.31% 90
2025
Q2 		$1.38B Sell
12,859,158
-3,662,461
-22% -$371M 0.44% 65
2025
Q1 		$1.67B Sell
16,521,619
-3,138,336
-16% -$316M 0.55% 50
2024
Q4 		$1.76B Sell
19,659,955
-6,007,738
-23% -$529M 0.55% 43
2024
Q3 		$2.15B Sell
25,667,693
-6,117,525
-19% -$482M 0.64% 33
2024
Q2 		$2.45B Sell
31,785,218
-14,821,798
-32% -$1.08B 0.75% 24
2024
Q1 		$3.19B Sell
46,607,016
-10,568,954
-18% -$680M 0.95% 17
2023
Q4 		$3.31B Sell
57,175,970
-5,357,412
-9% -$286M 1.07% 13
2023
Q3 		$3.3B Sell
62,533,382
-6,603,703
-10% -$346M 1.16% 14
2023
Q2 		$3.74B Sell
69,137,085
-10,396,546
-13% -$543M 1.23% 11
2023
Q1 		$3.98B Sell
79,533,631
-2,450,247
-3% -$115M 1.36% 10
2022
Q4 		$3.79B Sell
81,983,878
-2,107,674
-3% -$91.3M 1.32% 10
2022
Q3 		$3.26B Buy
84,091,552
+485,936
+0.6% +$19.5M 1.22% 11
2022
Q2 		$3.12B Sell
83,605,616
-563,369
-0.7% -$22.9M 1.07% 16
2022
Q1 		$3.73B Sell
84,168,985
-1,365,490
-2% -$59.2M 1.1% 15
2021
Q4 		$3.63B Buy
85,534,475
+1,738,853
+2% +$73.1M 0.99% 18
2021
Q3 		$3.64B Sell
83,795,622
-627,678
-0.7% -$27.8M 1.06% 17
2021
Q2 		$3.61B Buy
84,423,300
+1,763,829
+2% +$74.2M 1.05% 18
2021
Q1 		$3.19B Buy
82,659,471
+33,630,705
+69% +$1.27B 0.98% 20
2020
Q4 		$1.76B Buy
49,028,766
+5,703,310
+13% +$206M 0.57% 47
2020
Q3 		$1.66B Buy
43,325,456
+306,813
+0.7% +$11.8M 0.6% 40
2020
Q2 		$1.51B Buy
43,018,643
+13,284,649
+45% +$478M 0.6% 42
2020
Q1 		$970M Buy
29,733,994
+16,151,261
+119% +$631M 0.46% 63
2019
Q4 		$614M Buy
13,582,733
+1,354,675
+11% +$56.7M 0.23% 108
2019
Q3 		$498M Buy
12,228,058
+623,179
+5% +$26.4M 0.2% 122
2019
Q2 		$499M Buy
11,604,879
+220,156
+2% +$8.47M 0.2% 119
2019
Q1 		$437M Buy
11,384,723
+3,439,762
+43% +$131M 0.18% 126
2018
Q4 		$281M Buy
7,944,961
+4,941,897
+165% +$179M 0.13% 153
2018
Q3 		$116M Buy
+3,003,064
New +$105M 0.05% 264
2015
Q2 		– Sell
-1,042,321
Closed -$18.5M – 888
2015
Q1 		$18.5M Buy
+1,042,321
New +$16.5M 0.01% 545

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

Massachusetts Financial Services's BSX Position: Q1 2026 in Review

Massachusetts Financial Services increased its Boston Scientific (BSX) stake by 21% in Q1 2026, buying an estimated $153M and bringing the position to 10,996,572 shares worth $717M. The position accounts for 0.24% of the portfolio, ranked #109.

Massachusetts Financial Services first reported a position in BSX in Q1 2015 and has held it in 32 quarters since. The position peaked at $3.98B in Q1 2023. 1,664 funds tracked by Wall St. Rank hold BSX as of Q1 2026.

  • Massachusetts Financial Services held 10,996,572 shares of Boston Scientific worth $717M as of Q1 2026.
  • Massachusetts Financial Services bought 1,911,044 Boston Scientific shares in Q1 2026, an estimated $153M.
  • Boston Scientific made up 0.24% of Massachusetts Financial Services's portfolio in Q1 2026, its #109 holding.
  • Massachusetts Financial Services first reported a position in Boston Scientific in Q1 2015 and has held it in 32 quarters since.
  • Massachusetts Financial Services's Boston Scientific position peaked at $3.98B in Q1 2023.
  • 1,664 funds tracked by Wall St. Rank held Boston Scientific as of Q1 2026.

Based on Massachusetts Financial Services's 13F filing for Q1 2026, filed 14 May 2026.