Magnetar Financial’s Boston Scientific BSX Stock Holding History
Bought
Maintained
Sold
| Quarter | Market Value | Status | Shares |
Change in Stake | Trade Value | Portfolio Weight | Portfolio Position | |
|---|---|---|---|---|---|---|---|---|
|
2026
Q1 | $496K | Sell |
7,883
-3,958
| -33% | -$317K | 0.01% | 634 |
|
|
2025
Q4 | $1.13M | Sell |
11,841
-57,632
| -83% | -$5.65M | 0.01% | 421 |
|
|
2025
Q3 | $6.78M | Buy |
69,473
+63,691
| +1,102% | +$6.6M | 0.04% | 182 |
|
|
2025
Q2 | $621K | Buy |
5,782
+794
| +16% | +$80.3K | ﹤0.01% | 516 |
|
|
2025
Q1 | $503K | Sell |
4,988
-292,157
| -98% | -$29.4M | 0.01% | 462 |
|
|
2024
Q4 | $26.5M | Sell |
297,145
-574,219
| -66% | -$50.5M | 0.61% | 50 |
|
|
2024
Q3 | $73M | Buy |
871,364
+481,989
| +124% | +$38M | 1.58% | 16 |
|
|
2024
Q2 | $30M | Buy |
389,375
+141,330
| +57% | +$10.3M | 0.63% | 55 |
|
|
2024
Q1 | $17M | Buy |
248,045
+114,012
| +85% | +$7.33M | 0.38% | 75 |
|
|
2023
Q4 | $7.75M | Sell |
134,033
-605,590
| -82% | -$32.3M | 0.2% | 88 |
|
|
2023
Q3 | $39.1M | Sell |
739,623
-220,691
| -23% | -$11.6M | 1% | 28 |
|
|
2023
Q2 | $51.9M | Sell |
960,314
-307,543
| -24% | -$16.1M | 1.14% | 30 |
|
|
2023
Q1 | $63.4M | Sell |
1,267,857
-545,354
| -30% | -$25.7M | 1.24% | 24 |
|
|
2022
Q4 | $83.9M | Sell |
1,813,211
-716,486
| -28% | -$31M | 1.42% | 9 |
|
|
2022
Q3 | $98M | Sell |
2,529,697
-101,417
| -4% | -$4.07M | 1.36% | 4 |
|
|
2022
Q2 | $98.1K | Buy |
2,631,114
+1,312,294
| +100% | +$53.4M | 1.01% | 18 |
|
|
2022
Q1 | $58.4M | Buy |
1,318,820
+304,276
| +30% | +$13.2M | 0.62% | 30 |
|
|
2021
Q4 | $43.1M | Buy |
1,014,544
+408,492
| +67% | +$17.2M | 0.43% | 38 |
|
|
2021
Q3 | $26.3M | Buy |
606,052
+532,358
| +722% | +$23.6M | 0.27% | 64 |
|
|
2021
Q2 | $3.15K | Sell |
73,694
-93,825
| -56% | -$3.95M | 0.03% | 510 |
|
|
2021
Q1 | $6.47M | Sell |
167,519
-915,427
| -85% | -$34.6M | 0.06% | 280 |
|
|
2020
Q4 | $38.9M | Buy |
1,082,946
+919,375
| +562% | +$33.1M | 0.55% | 35 |
|
|
2020
Q3 | $6.25M | Sell |
163,571
-81,009
| -33% | -$3.12M | 0.11% | 180 |
|
|
2020
Q2 | $8.59M | Sell |
244,580
-20,027
| -8% | -$721K | 0.25% | 93 |
|
|
2020
Q1 | $8.63M | Buy |
264,607
+228,809
| +639% | +$8.94M | 0.21% | 96 |
|
|
2019
Q4 | $1.62M | Buy |
35,798
+3,798
| +12% | +$159K | 0.03% | 155 |
|
|
2019
Q3 | $1.3M | Buy |
+32,000
| New | +$1.36M | 0.03% | 188 |
|
|
2019
Q2 | – | Sell |
-7,074
| Closed | -$272K | – | 454 |
|
|
2019
Q1 | $272K | Buy |
+7,074
| New | +$270K | 0.01% | 331 |
|
|
2018
Q1 | – | Sell |
-151,613
| Closed | -$3.76M | – | 595 |
|
|
2017
Q4 | $3.76M | Buy |
+151,613
| New | +$4.18M | 0.07% | 80 |
|
|
2017
Q3 | – | Sell |
-60,234
| Closed | -$1.67M | – | 735 |
|
|
2017
Q2 | $1.67M | Sell |
60,234
-1,773
| -3% | -$47.1K | 0.03% | 268 |
|
|
2017
Q1 | $1.54M | Buy |
+62,007
| New | +$1.51M | 0.02% | 224 |
|
|
2016
Q4 | – | Sell |
-54,730
| Closed | -$1.3M | – | 67 |
|
|
2016
Q3 | $1.3M | Buy |
+54,730
| New | +$1.31M | 0.02% | 228 |
|
Other funds holding BSX
VCM
VPM
Magnetar Financial's BSX Position: Q1 2026 in Review
Magnetar Financial reduced its Boston Scientific (BSX) stake by 33% in Q1 2026, selling an estimated $317K and leaving 7,883 shares worth $496K. The position accounts for 0.01% of the portfolio, ranked #634.
Magnetar Financial first reported a position in BSX in Q3 2016 and has held it in 32 quarters since. The position peaked at $98M in Q3 2022. 1,664 funds tracked by Wall St. Rank hold BSX as of Q1 2026.
- Magnetar Financial held 7,883 shares of Boston Scientific worth $496K as of Q1 2026.
- Magnetar Financial sold 3,958 Boston Scientific shares in Q1 2026, an estimated $317K.
- Boston Scientific made up 0.01% of Magnetar Financial's portfolio in Q1 2026, its #634 holding.
- Magnetar Financial first reported a position in Boston Scientific in Q3 2016 and has held it in 32 quarters since.
- Magnetar Financial's Boston Scientific position peaked at $98M in Q3 2022.
- 1,664 funds tracked by Wall St. Rank held Boston Scientific as of Q1 2026.
Based on Magnetar Financial's 13F filing for Q1 2026, filed 13 May 2026.