Simplex Trading
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Simplex Trading’s Boston Scientific BSX Stock Holding History

Simplex Trading’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 		$54.6M Buy
870,600
+537,400
+161% +$43M 0.04% 208
2025
Q4 		$31.8M Sell
333,200
-134,900
-29% -$13.2M 0.02% 398
2025
Q3 		$45.7M Buy
468,100
+186,500
+66% +$19.3M 0.02% 374
2025
Q2 		$30.2M Sell
281,600
-196,400
-41% -$19.9M 0.02% 413
2025
Q1 		$48.2M Buy
478,000
+121,700
+34% +$12.3M 0.03% 285
2024
Q4 		$31.8M Sell
356,300
-11,200
-3% -$986K 0.02% 439
2024
Q3 		$30.8M Buy
367,500
+35,700
+11% +$2.81M 0.02% 463
2024
Q2 		$25.6M Sell
331,800
-8,800
-3% -$644K 0.02% 520
2024
Q1 		$23.3M Sell
340,600
-38,200
-10% -$2.46M 0.01% 619
2023
Q4 		$21.9M Buy
378,800
+32,000
+9% +$1.71M 0.01% 677
2023
Q3 		$18.3M Sell
346,800
-27,400
-7% -$1.44M 0.01% 632
2023
Q2 		$20.2M Buy
374,200
+180,000
+93% +$9.4M 0.02% 573
2023
Q1 		$9.71M Sell
194,200
-25,000
-11% -$1.18M 0.01% 921
2022
Q4 		$10.1M Buy
219,200
+27,400
+14% +$1.19M 0.01% 840
2022
Q3 		$7.43M Sell
191,800
-108,200
-36% -$4.34M 0.01% 937
2022
Q2 		$11.2M Sell
300,000
-3,500
-1% -$142K 0.01% 750
2022
Q1 		$13.4M Buy
303,500
+144,700
+91% +$6.27M 0.01% 695
2021
Q4 		$6.75M Buy
158,800
+69,100
+77% +$2.9M 0.01% 1020
2021
Q3 		$3.89M Buy
89,700
+6,800
+8% +$301K ﹤0.01% 1429
2021
Q2 		$3.54M Buy
82,900
+81,658
+6,575% +$3.44M ﹤0.01% 1510
2021
Q1 		$4.8M Sell
1,242
-892
-42% -$33.8K 0.01% 852
2020
Q4 		$7.67M Buy
2,134
+1,328
+165% +$47.9K 0.01% 705
2020
Q3 		$3.08M Sell
806
-879
-52% -$33.9K ﹤0.01% 1182
2020
Q2 		$5.92M Buy
1,685
+479
+40% +$17.3K 0.01% 757
2020
Q1 		$3.94M Sell
1,206
-471
-28% -$18.4K 0.01% 825
2019
Q4 		$7.58M Buy
1,677
+66
+4% +$2.76K 0.02% 582
2019
Q3 		$6.55M Sell
1,611
-1,412
-47% -$59.8K 0.02% 578
2019
Q2 		$13M Buy
3,023
+1,526
+102% +$58.7K 0.04% 324
2019
Q1 		$5.75M Sell
1,497
-273
-15% -$10.4K 0.02% 602
2018
Q4 		$6.25M Sell
1,770
-1,144
-39% -$41.5K 0.02% 485
2018
Q3 		$11.2M Buy
2,914
+1,565
+116% +$54.7K 0.04% 330
2018
Q2 		$4.41M Buy
1,349
+1,208
+857% +$36.4K 0.02% 618
2018
Q1 		$13K Sell
141
-400
-74% -$10.9K ﹤0.01% 3763
2017
Q4 		$80K Sell
541
-18
-3% -$496 ﹤0.01% 1991
2017
Q3 		$189K Sell
559
-90
-14% -$2.48K 0.01% 1223
2017
Q2 		$62K Buy
649
+312
+93% +$8.28K ﹤0.01% 2189
2017
Q1 		$45K Sell
337
-235
-41% -$5.71K ﹤0.01% 2466
2016
Q4 		$56K Buy
572
+248
+77% +$5.41K ﹤0.01% 2035
2016
Q3 		$52K Buy
324
+181
+127% +$4.32K ﹤0.01% 2062
2016
Q2 		$39K Sell
143
-228
-61% -$4.93K ﹤0.01% 2282
2016
Q1 		$40K Buy
371
+326
+724% +$5.73K ﹤0.01% 2143
2015
Q4 		$5K Sell
45
-173
-79% -$3.1K ﹤0.01% 3842
2015
Q3 		$7K Buy
218
+147
+207% +$2.51K ﹤0.01% 3714
2015
Q2 		$7K Buy
71
+3
+4% +$54 ﹤0.01% 3340
2015
Q1 		$14K Buy
68
+28
+70% +$443 ﹤0.01% 2606
2014
Q4 		$20K Buy
+40
New +$511 ﹤0.01% 2043

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

Simplex Trading's BSX Position: Q1 2026 in Review

Simplex Trading sold out of Boston Scientific (BSX) in Q1 2026, closing a stake of 141,877 shares — an estimated $11.3M sold.

Simplex Trading first reported a position in BSX in Q3 2015 and held it in 29 quarters. The position peaked at $13.5M in Q4 2025. 1,664 funds tracked by Wall St. Rank hold BSX as of Q1 2026.

  • Simplex Trading reported no remaining Boston Scientific position as of Q1 2026 after selling out during the quarter.
  • Simplex Trading sold 141,877 Boston Scientific shares in Q1 2026, an estimated $11.3M.
  • Simplex Trading first reported a position in Boston Scientific in Q3 2015 and held it in 29 quarters.
  • Simplex Trading's Boston Scientific position peaked at $13.5M in Q4 2025.
  • 1,664 funds tracked by Wall St. Rank held Boston Scientific as of Q1 2026.

Based on Simplex Trading's 13F filing for Q1 2026, filed 14 May 2026.