StockDriftsStockDriftsTop 50 Primecap Management CO Ca Holdings
| Stock | Company | % Port. | Shares | Value | Activity | Ownership | Avg. Cost | Date |
|---|---|---|---|---|---|---|---|---|
| MU | MICRON TECHNOLOGY INC | 13.12% | 19.22M | $22.18B | -12.15%(-2.66M) | $12.18(+7876.64%) | 2026-06-30 | |
| LLY | ELI LILLY & CO | 6.51% | 9.17M | $11.00B | -0.55%(-50.53K) | $51.08(+2210.26%) | 2026-06-30 | |
| INTC | INTEL CORP | 6.21% | 75.25M | $10.51B | -0.67%(-511.01K) | $36.88(+177.93%) | 2026-06-30 | |
| KLAC | KLA CORP | 3.66% | 20.54M | $6.20B | +742.48%(+18.10M) | $6.73(+2928.75%) | 2026-06-30 | |
| GOOGL | ALPHABET INC | 3.14% | 14.86M | $5.31B | -0.85%(-127.69K) | $17.33(+1895.60%) | 2026-06-30 | |
| FLEX | FLEX LTD | 2.24% | 23.36M | $3.79B | -7.98%(-2.02M) | $6.72(+1776.34%) | 2026-06-30 | |
| AZN | ASTRAZENECA PLC | 2.03% | 18.10M | $3.43B | -0.65%(-118.53K) | $66.50(+135.27%) | 2026-06-30 | |
| NVDA | NVIDIA CORPORATION | 2.02% | 17.08M | $3.42B | -0.63%(-109.05K) | $0.50(+45347.22%) | 2026-06-30 | |
| BIIB | BIOGEN INC | 1.94% | 15.15M | $3.27B | +2.69%(+397.00K) | $108.33(+93.70%) | 2026-06-30 | |
| AMZN | AMAZON COM INC | 1.69% | 11.96M | $2.85B | -1.20%(-144.85K) | $155.45(+68.96%) | 2026-06-30 |
| Performance Metric | 3-Year Annualized | 3-Year Cumulative |
|---|---|---|
| Top 20 Holdings Weighted | +34.60% | +143.83% |
| Top 20 Holdings Unweighted | +29.45% | +116.90% |
Primecap Management CO Ca reports $169.11B in US-listed equity holdings across 324 positions in its most recent 13F filing. Its largest disclosed positions are MU (13.1%), LLY (6.5%) and INTC (6.2%). The top 20 holdings account for 56.72% of reported assets. Its disclosed equity book has returned +143.83% on a three-year cumulative basis. Figures reflect the Q2 2026 filing.
Portfolio changes
Every reported change this quarter, grouped by direction. The signal is in the rotation, not any single trade.
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Holdings on this page are parsed from Primecap Management CO Ca’s Form 13F filings with the U.S. Securities and Exchange Commission (CIK 763212). View Primecap Management CO Ca’s 13F filings on SEC EDGAR. For how we turn filings into the analysis above, see our research methodology.