Jim Simons’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 | $198M | Buy |
3,152,005
+769,300
| +32% | +$61.5M | 0.31% | 48 |
|
|
2025
Q4 | $227M | Buy |
2,382,705
+1,465,600
| +160% | +$144M | 0.35% | 44 |
|
|
2025
Q3 | $89.5M | Sell |
917,105
-579,436
| -39% | -$60M | 0.12% | 185 |
|
|
2025
Q2 | $161M | Buy |
1,496,541
+844,988
| +130% | +$85.5M | 0.21% | 91 |
|
|
2025
Q1 | $65.7M | Buy |
+651,553
| New | +$65.6M | 0.1% | 246 |
|
|
2024
Q4 | – | Sell |
-258,025
| Closed | -$21.6M | – | 3584 |
|
|
2024
Q3 | $21.6M | Buy |
+258,025
| New | +$20.3M | 0.03% | 632 |
|
|
2023
Q3 | – | Sell |
-835,905
| Closed | -$45.2M | – | 3687 |
|
|
2023
Q2 | $45.2M | Buy |
+835,905
| New | +$43.7M | 0.07% | 342 |
|
|
2021
Q1 | – | Sell |
-2,771,205
| Closed | -$99.6M | – | 3328 |
|
|
2020
Q4 | $99.6M | Buy |
+2,771,205
| New | +$99.9M | 0.11% | 193 |
|
|
2020
Q3 | – | Sell |
-27,605
| Closed | -$969K | – | 3388 |
|
|
2020
Q2 | $969K | Buy |
+27,605
| New | +$994K | ﹤0.01% | 2554 |
|
|
2019
Q3 | – | Sell |
-118,829
| Closed | -$5.11M | – | 3436 |
|
|
2019
Q2 | $5.11M | Sell |
118,829
-2,072,100
| -95% | -$79.7M | ﹤0.01% | 1808 |
|
|
2019
Q1 | $84.1M | Buy |
+2,190,929
| New | +$83.7M | 0.08% | 306 |
|
|
2018
Q2 | – | Sell |
-1,094,305
| Closed | -$29.9M | – | 3270 |
|
|
2018
Q1 | $29.9M | Sell |
1,094,305
-52,000
| -5% | -$1.41M | 0.03% | 701 |
|
|
2017
Q4 | $28.4M | Sell |
1,146,305
-866,100
| -43% | -$23.9M | 0.03% | 726 |
|
|
2017
Q3 | $58.7M | Sell |
2,012,405
-3,293,200
| -62% | -$90.9M | 0.07% | 358 |
|
|
2017
Q2 | $147M | Sell |
5,305,605
-421,100
| -7% | -$11.2M | 0.19% | 101 |
|
|
2017
Q1 | $142M | Buy |
5,726,705
+3,101,400
| +118% | +$75.4M | 0.2% | 97 |
|
|
2016
Q4 | $56.8M | Buy |
2,625,305
+741,300
| +39% | +$16.2M | 0.09% | 277 |
|
|
2016
Q3 | $44.8M | Sell |
1,884,005
-3,017,900
| -62% | -$72M | 0.08% | 314 |
|
|
2016
Q2 | $115M | Buy |
4,901,905
+4,283,500
| +693% | +$92.7M | 0.22% | 61 |
|
|
2016
Q1 | $11.6M | Sell |
618,405
-2,853,300
| -82% | -$50.1M | 0.02% | 1034 |
|
|
2015
Q4 | $64M | Buy |
+3,471,705
| New | +$62.2M | 0.14% | 154 |
|
|
2015
Q3 | – | Sell |
-2,847,305
| Closed | -$50.4M | – | 3168 |
|
|
2015
Q2 | $50.4M | Sell |
2,847,305
-946,350
| -25% | -$16.9M | 0.11% | 179 |
|
|
2015
Q1 | $67.3M | Sell |
3,793,655
-1,539,650
| -29% | -$24.3M | 0.14% | 132 |
|
|
2014
Q4 | $70.7M | Buy |
5,333,305
+3,123,400
| +141% | +$39.9M | 0.17% | 107 |
|
|
2014
Q3 | $26.1M | Buy |
2,209,905
+1,669,700
| +309% | +$21M | 0.07% | 346 |
|
|
2014
Q2 | $6.9M | Sell |
540,205
-954,200
| -64% | -$12.4M | 0.02% | 1053 |
|
|
2014
Q1 | $20.2M | Sell |
1,494,405
-2,864,215
| -66% | -$37.6M | 0.05% | 480 |
|
|
2013
Q4 | $52.4M | Sell |
4,358,620
-444,885
| -9% | -$5.26M | 0.13% | 167 |
|
|
2013
Q3 | $56.4M | Sell |
4,803,505
-5,535,800
| -54% | -$59.9M | 0.14% | 148 |
|
|
2013
Q2 | $95.8M | Buy |
+10,339,305
| New | +$87.7M | 0.25% | 71 |
|
Other funds holding BSX
VCM
VPM
Jim Simons's BSX Position: Q1 2026 in Review
Jim Simons increased its Boston Scientific (BSX) stake by 32% in Q1 2026, buying an estimated $61.5M and bringing the position to 3,152,005 shares worth $198M. The position accounts for 0.31% of the portfolio, ranked #48.
Jim Simons first reported a position in BSX in Q2 2013 and has held it in 30 quarters since. The position peaked at $227M in Q4 2025. 1,672 funds tracked by Wall St. Rank hold BSX as of Q1 2026.
- Jim Simons held 3,152,005 shares of Boston Scientific worth $198M as of Q1 2026.
- Jim Simons bought 769,300 Boston Scientific shares in Q1 2026, an estimated $61.5M.
- Boston Scientific made up 0.31% of Jim Simons's portfolio in Q1 2026, its #48 holding.
- Jim Simons first reported a position in Boston Scientific in Q2 2013 and has held it in 30 quarters since.
- Jim Simons's Boston Scientific position peaked at $227M in Q4 2025.
- 1,672 funds tracked by Wall St. Rank held Boston Scientific as of Q1 2026.
Based on Renaissance Technologies's 13F filing for Q1 2026, filed 14 May 2026.