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 		$10.2M Sell
163,200
-167,200
-51% -$13.4M 0.01% 687
2025
Q4 		$31.5M Sell
330,400
-17,500
-5% -$1.72M 0.02% 403
2025
Q3 		$34M Sell
347,900
-80,500
-19% -$8.34M 0.02% 455
2025
Q2 		$46M Sell
428,400
-19,000
-4% -$1.92M 0.03% 307
2025
Q1 		$45.1M Sell
447,400
-32,200
-7% -$3.24M 0.03% 299
2024
Q4 		$42.8M Sell
479,600
-38,900
-8% -$3.42M 0.02% 353
2024
Q3 		$43.5M Sell
518,500
-93,200
-15% -$7.35M 0.03% 336
2024
Q2 		$47.1M Buy
611,700
+75,200
+14% +$5.5M 0.03% 314
2024
Q1 		$36.7M Buy
536,500
+305,700
+132% +$19.7M 0.02% 427
2023
Q4 		$13.3M Sell
230,800
-32,400
-12% -$1.73M 0.01% 921
2023
Q3 		$13.9M Sell
263,200
-33,100
-11% -$1.74M 0.01% 766
2023
Q2 		$16M Sell
296,300
-46,700
-14% -$2.44M 0.01% 668
2023
Q1 		$17.2M Sell
343,000
-14,000
-4% -$660K 0.02% 650
2022
Q4 		$16.5M Buy
357,000
+208,700
+141% +$9.04M 0.02% 631
2022
Q3 		$5.74M Sell
148,300
-235,500
-61% -$9.45M 0.01% 1103
2022
Q2 		$14.3M Sell
383,800
-86,300
-18% -$3.51M 0.02% 646
2022
Q1 		$20.8M Buy
470,100
+207,100
+79% +$8.98M 0.02% 527
2021
Q4 		$11.2M Sell
263,000
-122,700
-32% -$5.16M 0.01% 733
2021
Q3 		$16.7M Buy
385,700
+34,800
+10% +$1.54M 0.02% 522
2021
Q2 		$15M Buy
350,900
+349,585
+26,584% +$14.7M 0.01% 552
2021
Q1 		$5.08M Sell
1,315
-1,202
-48% -$45.5K 0.01% 808
2020
Q4 		$9.05M Sell
2,517
-725
-22% -$26.1K 0.01% 633
2020
Q3 		$12.4M Sell
3,242
-753
-19% -$29K 0.02% 448
2020
Q2 		$14M Buy
3,995
+1,923
+93% +$69.3K 0.02% 394
2020
Q1 		$6.76M Buy
2,072
+555
+37% +$21.7K 0.01% 554
2019
Q4 		$6.86M Buy
1,517
+221
+17% +$9.25K 0.02% 625
2019
Q3 		$5.27M Buy
1,296
+1,013
+358% +$42.9K 0.02% 691
2019
Q2 		$1.22M Sell
283
-247
-47% -$9.5K ﹤0.01% 1731
2019
Q1 		$2.03M Sell
530
-1,114
-68% -$42.5K 0.01% 1363
2018
Q4 		$5.81M Sell
1,644
-107
-6% -$3.88K 0.02% 501
2018
Q3 		$6.74M Buy
1,751
+1,226
+234% +$42.8K 0.02% 491
2018
Q2 		$1.72M Buy
525
+20
+4% +$603 0.01% 1275
2018
Q1 		$47K Sell
505
-967
-66% -$26.3K ﹤0.01% 2503
2017
Q4 		$349K Buy
1,472
+1,121
+319% +$30.9K 0.02% 907
2017
Q3 		$29K Buy
351
+247
+238% +$6.82K ﹤0.01% 2799
2017
Q2 		$2K Buy
+104
New +$2.76K ﹤0.01% 5193
2017
Q1 		– Sell
-1,494
Closed -$217K – 6161
2016
Q4 		$217K Buy
1,494
+1,430
+2,234% +$31.2K 0.01% 999
2016
Q3 		$1K Sell
64
-9
-12% -$215 ﹤0.01% 5251
2016
Q2 		$4K Sell
73
-11
-13% -$238 ﹤0.01% 4386
2016
Q1 		$4K Sell
84
-19
-18% -$334 ﹤0.01% 4218
2015
Q4 		$5K Sell
103
-47
-31% -$842 ﹤0.01% 3843
2015
Q3 		$15K Buy
150
+110
+275% +$1.88K ﹤0.01% 3060
2015
Q2 		$9K Sell
40
-11
-22% -$197 ﹤0.01% 3128
2015
Q1 		$3K Buy
51
+47
+1,175% +$743 ﹤0.01% 3814
2014
Q4 		$1K Buy
+4
New +$51 ﹤0.01% 4051

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.