Primecap Management’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 | $2.04B | Buy |
32,529,774
+1,433,590
| +5% | +$115M | 1.61% | 16 |
|
|
2025
Q4 | $2.97B | Sell |
31,096,184
-2,005,910
| -6% | -$197M | 2.24% | 8 |
|
|
2025
Q3 | $3.23B | Sell |
33,102,094
-1,560,628
| -5% | -$162M | 2.48% | 8 |
|
|
2025
Q2 | $3.72B | Sell |
34,662,722
-1,834,224
| -5% | -$186M | 2.95% | 5 |
|
|
2025
Q1 | $3.68B | Sell |
36,496,946
-432,720
| -1% | -$43.6M | 3.04% | 3 |
|
|
2024
Q4 | $3.3B | Sell |
36,929,666
-896,834
| -2% | -$78.9M | 2.55% | 5 |
|
|
2024
Q3 | $3.17B | Sell |
37,826,500
-132,561
| -0.3% | -$10.4M | 2.33% | 8 |
|
|
2024
Q2 | $2.92B | Buy |
37,959,061
+11,396
| +0% | +$834K | 2.12% | 12 |
|
|
2024
Q1 | $2.6B | Buy |
37,947,665
+42,006
| +0.1% | +$2.7M | 1.94% | 13 |
|
|
2023
Q4 | $2.19B | Buy |
37,905,659
+550,490
| +1% | +$29.4M | 1.73% | 14 |
|
|
2023
Q3 | $1.97B | Sell |
37,355,169
-73,810
| -0.2% | -$3.87M | 1.66% | 14 |
|
|
2023
Q2 | $2.02B | Sell |
37,428,979
-899,250
| -2% | -$47M | 1.69% | 15 |
|
|
2023
Q1 | $1.92B | Buy |
38,328,229
+676,370
| +2% | +$31.9M | 1.67% | 16 |
|
|
2022
Q4 | $1.74B | Buy |
37,651,859
+1,550
| +0% | +$67.1K | 1.59% | 17 |
|
|
2022
Q3 | $1.46B | Sell |
37,650,309
-169,300
| -0.4% | -$6.79M | 1.41% | 19 |
|
|
2022
Q2 | $1.41B | Sell |
37,819,609
-101,210
| -0.3% | -$4.12M | 1.26% | 24 |
|
|
2022
Q1 | $1.68B | Sell |
37,920,819
-197,800
| -0.5% | -$8.57M | 1.27% | 20 |
|
|
2021
Q4 | $1.62B | Sell |
38,118,619
-1,488,690
| -4% | -$62.6M | 1.12% | 23 |
|
|
2021
Q3 | $1.72B | Sell |
39,607,309
-413,136
| -1% | -$18.3M | 1.21% | 23 |
|
|
2021
Q2 | $1.71B | Sell |
40,020,445
-991,895
| -2% | -$41.7M | 1.15% | 25 |
|
|
2021
Q1 | $1.59B | Buy |
41,012,340
+1,551,355
| +4% | +$58.7M | 1.11% | 25 |
|
|
2020
Q4 | $1.42B | Sell |
39,460,985
-1,017,930
| -3% | -$36.7M | 1.05% | 28 |
|
|
2020
Q3 | $1.55B | Sell |
40,478,915
-1,202,990
| -3% | -$46.4M | 1.28% | 21 |
|
|
2020
Q2 | $1.46B | Sell |
41,681,905
-630,120
| -1% | -$22.7M | 1.26% | 22 |
|
|
2020
Q1 | $1.38B | Sell |
42,312,025
-2,265,600
| -5% | -$88.5M | 1.35% | 20 |
|
|
2019
Q4 | $2.02B | Sell |
44,577,625
-82,400
| -0.2% | -$3.45M | 1.46% | 21 |
|
|
2019
Q3 | $1.82B | Sell |
44,660,025
-483,952
| -1% | -$20.5M | 1.45% | 21 |
|
|
2019
Q2 | $1.94B | Buy |
45,143,977
+89,200
| +0.2% | +$3.43M | 1.43% | 22 |
|
|
2019
Q1 | $1.73B | Sell |
45,054,777
-8,000
| -0% | -$306K | 1.27% | 23 |
|
|
2018
Q4 | $1.59B | Buy |
45,062,777
+294,992
| +0.7% | +$10.7M | 1.29% | 23 |
|
|
2018
Q3 | $1.72B | Sell |
44,767,785
-39,356
| -0.1% | -$1.37M | 1.16% | 24 |
|
|
2018
Q2 | $1.47B | Buy |
44,807,141
+87,100
| +0.2% | +$2.63M | 1.09% | 24 |
|
|
2018
Q1 | $1.22B | Buy |
44,720,041
+842,479
| +2% | +$22.9M | 0.92% | 34 |
|
|
2017
Q4 | $1.09B | Buy |
43,877,562
+1,709,295
| +4% | +$47.1M | 0.83% | 36 |
|
|
2017
Q3 | $1.23B | Sell |
42,168,267
-200,900
| -0.5% | -$5.55M | 1.02% | 31 |
|
|
2017
Q2 | $1.17B | Buy |
42,369,167
+613,200
| +1% | +$16.3M | 1.01% | 29 |
|
|
2017
Q1 | $1.04B | Sell |
41,755,967
-164,490
| -0.4% | -$4M | 0.94% | 31 |
|
|
2016
Q4 | $907M | Buy |
41,920,457
+115,407
| +0.3% | +$2.52M | 0.89% | 37 |
|
|
2016
Q3 | $995M | Sell |
41,805,050
-835,400
| -2% | -$19.9M | 0.99% | 31 |
|
|
2016
Q2 | $997M | Sell |
42,640,450
-713,950
| -2% | -$15.4M | 1.06% | 26 |
|
|
2016
Q1 | $815M | Buy |
43,354,400
+7,700
| +0% | +$135K | 0.85% | 39 |
|
|
2015
Q4 | $799M | Sell |
43,346,700
-261,664
| -0.6% | -$4.69M | 0.82% | 37 |
|
|
2015
Q3 | $716M | Sell |
43,608,364
-2,489,200
| -5% | -$42.5M | 0.79% | 35 |
|
|
2015
Q2 | $816M | Sell |
46,097,564
-349,785
| -0.8% | -$6.25M | 0.8% | 35 |
|
|
2015
Q1 | $824M | Sell |
46,447,349
-510,000
| -1% | -$8.06M | 0.81% | 36 |
|
|
2014
Q4 | $622M | Sell |
46,957,349
-121,850
| -0.3% | -$1.56M | 0.63% | 45 |
|
|
2014
Q3 | $556M | Sell |
47,079,199
-1,372,820
| -3% | -$17.3M | 0.59% | 47 |
|
|
2014
Q2 | $619M | Sell |
48,452,019
-899,800
| -2% | -$11.7M | 0.68% | 42 |
|
|
2014
Q1 | $667M | Buy |
49,351,819
+946,600
| +2% | +$12.4M | 0.76% | 32 |
|
|
2013
Q4 | $582M | Sell |
48,405,219
-257,300
| -0.5% | -$3.04M | 0.7% | 34 |
|
|
2013
Q3 | $571M | Sell |
48,662,519
-376,700
| -0.8% | -$4.07M | 0.75% | 34 |
|
|
2013
Q2 | $455M | Buy |
+49,039,219
| New | +$416M | 0.65% | 42 |
|
Other funds holding BSX
VCM
VPM
Primecap Management's BSX Position: Q1 2026 in Review
Primecap Management increased its Boston Scientific (BSX) stake by 4.6% in Q1 2026, buying an estimated $115M and bringing the position to 32,529,774 shares worth $2.04B. The position accounts for 1.61% of the portfolio, ranked #16.
Primecap Management first reported a position in BSX in Q2 2013 and has held it in 52 quarters since. The position peaked at $3.72B in Q2 2025. 1,664 funds tracked by Wall St. Rank hold BSX as of Q1 2026.
- Primecap Management held 32,529,774 shares of Boston Scientific worth $2.04B as of Q1 2026.
- Primecap Management bought 1,433,590 Boston Scientific shares in Q1 2026, an estimated $115M.
- Boston Scientific made up 1.61% of Primecap Management's portfolio in Q1 2026, its #16 holding.
- Primecap Management first reported a position in Boston Scientific in Q2 2013 and has held it in 52 quarters since.
- Primecap Management's Boston Scientific position peaked at $3.72B in Q2 2025.
- 1,664 funds tracked by Wall St. Rank held Boston Scientific as of Q1 2026.
Based on Primecap Management's 13F filing for Q1 2026, filed 11 May 2026.