PRIMECAP MANAGEMENT CO/CA/
Top Portfolio Positions
318 positions ·
$125,633,453,023 total
· as of Mar 31, 2026
| Ticker | Company | Shares | Value (USD) | % of Portfolio | Open |
|---|---|---|---|---|---|
| LLY |
ELI LILLY & Co
Healthcare
|
9,223,432 | $8,483,436,050 | 6.75% | |
| MU |
Micron Technology Inc
Technology
|
21,874,204 | $7,389,981,079 | 5.88% | |
| GOOGL |
Alphabet Inc.
Communication Services
|
14,987,459 | $4,309,793,710 | 3.43% | |
| AZN |
Astrazeneca PLC
Healthcare
|
18,213,708 | $3,592,107,491 | 2.86% | |
| KLAC |
Kla Corp
Technology
|
2,437,647 | $3,589,215,819 | 2.86% | |
| INTC |
Intel Corp
Technology
|
75,761,968 | $3,343,375,647 | 2.66% | |
| AMGN |
Amgen Inc
Healthcare
|
8,874,129 | $3,122,362,288 | 2.49% | |
| NVDA |
Nvidia Corp
Technology
|
17,188,230 | $2,997,627,312 | 2.39% | |
| FDX |
Fedex Corp
Industrials
|
8,303,010 | $2,957,366,101 | 2.35% | |
| BIIB |
Biogen Inc.
Healthcare
|
14,757,607 | $2,705,512,091 | 2.15% |
Portfolio Trend
25 quarters · across all stocks
Holdings in ROCK
Shares Held
Position Value (USD)
25 quarters on record
| Report Date | Value (USD) | Shares | Type | Discretion | Filed | |
|---|---|---|---|---|---|---|
| 2026-03-31 | $3,811,572 | 95,600 | Shares | Sole | 2026-05-11 | |
| 2025-12-31 | $4,726,464 | 95,600 | Shares | Sole | 2026-02-11 | |
| 2025-09-30 | $6,003,680 | 95,600 | Shares | Sole | 2025-11-12 | |
| 2025-06-30 | $5,640,400 | 95,600 | Shares | Sole | 2025-08-11 | |
| 2025-03-31 | $6,000,918 | 102,300 | Shares | Sole | 2025-05-09 | |
| 2024-12-31 | $6,025,470 | 102,300 | Shares | Sole | 2025-02-10 | |
| 2024-09-30 | $7,153,839 | 102,300 | Shares | Sole | 2024-11-08 | |
| 2024-06-30 | $7,012,665 | 102,300 | Shares | Sole | 2024-08-09 | |
| 2024-03-31 | $8,238,219 | 102,300 | Shares | Sole | 2024-05-14 | |
| 2023-12-31 | $8,079,654 | 102,300 | Shares | Sole | 2024-02-09 | |
| 2023-09-30 | $7,675,887 | 113,700 | Shares | Sole | 2023-11-13 | |
| 2023-06-30 | $10,142,704 | 161,200 | Shares | Sole | 2023-08-11 | |
| 2023-03-31 | $11,984,350 | 247,100 | Shares | Sole | 2023-05-15 | |
| 2022-12-31 | $11,336,948 | 247,100 | Shares | Sole | 2023-02-13 | |
| 2022-09-30 | $12,590,068 | 307,600 | Shares | Sole | 2022-11-14 | |
| 2022-06-30 | $12,481,375 | 322,100 | Shares | Sole | 2022-08-11 | |
| 2022-03-31 | $15,337,445 | 357,100 | Shares | Sole | 2022-05-11 | |
| 2021-12-31 | $24,744,948 | 371,100 | Shares | Sole | 2022-02-11 | |
| 2021-09-30 | $25,847,115 | 371,100 | Shares | Sole | 2021-11-12 | |
| 2021-06-30 | $28,394,951 | 372,100 | Shares | Sole | 2021-08-10 | |
| 2021-03-31 | $34,307,099 | 374,900 | Shares | Sole | 2021-05-14 | |
| 2020-12-31 | $26,970,306 | 374,900 | Shares | Sole | 2021-02-08 | |
| 2020-09-30 | $24,727,144 | 379,600 | Shares | Sole | 2020-11-13 | |
| 2020-06-30 | $18,464,646 | 384,600 | Shares | Sole | 2020-08-13 | |
| 2020-03-31 | $16,343,936 | 380,800 | Shares | Sole | 2020-05-14 | |
| No 13F history on record for this holder in this stock. | ||||||