PRIMECAP Management Co.
Institutional investor · Portfolio as of Q2 2026
Top Holdings324 positions
 Micron Technology, Inc. | 19.2M | $22.2B | 13.1% | $31.61 | +2194.17% | 31 qtrssince 2018-Q4 | Decreased 0 |
 Eli Lilly and Company | 9.2M | $11B | 6.5% | $104.89 | +1265.53% | 31 qtrssince 2018-Q4 | Decreased 0 |
 Intel Corporation | 75.3M | $10.5B | 6.2% | $37.79 | +53.82% | 31 qtrssince 2018-Q4 | Decreased 0 |
 KLA Corporation | 20.5M | $6.2B | 3.7% | $8.13 | +1782.75% | 31 qtrssince 2018-Q4 | Decreased 0 |
 Alphabet Inc. | 14.9M | $5.3B | 3.1% | $54.70 | +425.40% | 31 qtrssince 2018-Q4 | Decreased 0 |
 Flex Ltd. | 23.4M | $3.8B | 2.2% | — | — | 31 qtrssince 2018-Q4 | Decreased 0 |
 AstraZeneca PLC | 18.1M | $3.4B | 2.0% | $127.11 | +46.92% | 7 qtrssince 2024-Q4 | Decreased 0 |
 NVIDIA Corporation | 17.1M | $3.4B | 2.0% | $3.30 | +5014.78% | 31 qtrssince 2018-Q4 | Decreased 0 |
 Biogen Inc. | 15.2M | $3.3B | 1.9% | $295.60 | -14.33% | 31 qtrssince 2018-Q4 | Increased 52 |
 Amazon.com, Inc. | 12M | $2.9B | 1.7% | $172.72 | +56.83% | 31 qtrssince 2018-Q4 | Decreased 0 |
 Microsoft Corporation | 7.1M | $2.7B | 1.6% | $95.67 | +457.29% | 31 qtrssince 2018-Q4 | Decreased 0 |
 Tesla, Inc. | 6.1M | $2.6B | 1.5% | $19.31 | +1866.59% | 31 qtrssince 2018-Q4 | Decreased 0 |
 FedEx Corporation | 8.2M | $2.6B | 1.5% | — | — | 31 qtrssince 2018-Q4 | Decreased 0 |
 Texas Instruments Incorporated | 8.5M | $2.5B | 1.5% | $75.82 | +296.38% | 31 qtrssince 2018-Q4 | Decreased 0 |
 Southwest Airlines Company | 48.8M | $2.5B | 1.5% | $41.72 | +11.03% | 31 qtrssince 2018-Q4 | Increased 52 |
 Amgen Inc. | 6.8M | $2.4B | 1.4% | $154.34 | +201.44% | 31 qtrssince 2018-Q4 | Decreased 0 |
 The Charles Schwab Corporation | 25.1M | $2.3B | 1.4% | $81.72 | +13.85% | 31 qtrssince 2018-Q4 | Increased 54 |
 United Airlines Holdings, Inc. | 16.5M | $2.2B | 1.3% | $85.44 | +41.10% | 31 qtrssince 2018-Q4 | Increased 53 |
 Boston Scientific Corporation | 50.5M | $2.2B | 1.3% | $39.20 | +14.02% | 31 qtrssince 2018-Q4 | Increased 71 |
 Ross Stores, Inc. | 9.1M | $1.9B | 1.1% | $79.81 | +199.39% | 31 qtrssince 2018-Q4 | Decreased 0 |
| Quarter | Reported value in US dollars | Reported value change |
|---|---|---|
| 2025-Q1 | $120,960,512,182 | -6.31888429262% |
| 2025-Q2 | $126,189,120,741 | 4.32257475161% |
| 2025-Q3 | $130,569,348,437 | 3.47116111934% |
| 2025-Q4 | $132,110,156,202 | 1.18006851029% |
| 2026-Q1 | $127,010,591,624 | -3.860085193% |
| 2026-Q2 | $169,112,441,771 | 33.1482985857% |
PRIMECAP Management Co. manages $169.1B across 324 positions as of Q2 2026. Top holdings: MU (13.1%), LLY (6.5%), INTC (6.2%). Fund DNA: Steady Compounder. HoldingsIntel Score: 3/5.0.
Active quarter - 12 new positions, 8 exits, 82 increased. Top move: BSX (INCREASED, conviction 71). Portfolio: $169.1B across 324 positions.
Top holdings by portfolio weight
Portfolio allocation by GICS sector
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Position Outcomes
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Cost basis estimates based on full filing history using quarter-end prices. Actual transaction prices are not disclosed in 13F filings.
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Data sourced from SEC EDGAR 13F filings. Not financial advice. Full disclaimer
Verify source filings on SEC EDGAR