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Primecap Management Co: 13F portfolio Q2 2026 and what copying it returned
Primecap Management Co's 13F for the quarter ended 2026-06-30 (filed Aug 14, 2026): 324 common-share positions, $169.1B reported. Copying each 13F the day after it was filed returned +103.2% from Jun 2, 2022 to Nov 6, 2026, against +79.5% for SPY.
Copying the 13F
Each 13F bought at the close of the first trading day after it was filed and held, drifting, until the next one; value-weighted over the common-share positions with a price (91.1% of the portfolio on average); 18 filings since Nov 13, 2013. Price returns for the clone and SPY alike (no dividends, no costs). A 13F lists only US long positions at quarter end, reported up to 45 days later.
Largest holdings (2026-06-30)
| Ticker | Company | Weight | Value | Change in the quarter |
|---|---|---|---|---|
| MU | Micron Technology | 13.1% | $22.2B | -12.1% |
| LLY | ELI Lilly | 6.5% | $11.0B | -0.5% |
| INTC | Intel | 6.2% | $10.5B | -0.7% |
| KLAC | KLA | 3.7% | $6.2B | +742.5% |
| GOOGL | Alphabet | 3.1% | $5.3B | -0.9% |
| NVDA | NVIDIA | 2.0% | $3.4B | -0.6% |
| BIIB | Biogen | 1.9% | $3.3B | +2.7% |
| AMZN | Amazon.com | 1.7% | $2.9B | -1.2% |
| MSFT | Microsoft | 1.6% | $2.7B | -1.7% |
| TSLA | Tesla | 1.5% | $2.6B | -0.4% |
| FDX | FedEx | 1.5% | $2.6B | -1.8% |
| TXN | Texas Instruments | 1.5% | $2.5B | -11.8% |
| LUV | Southwest Airlines | 1.5% | $2.5B | +3.7% |
| AMGN | Amgen | 1.5% | $2.4B | -23.9% |
| SCHW | Schwab Charles | 1.4% | $2.3B | +7.2% |
| UAL | United Airlines Holdings | 1.3% | $2.2B | +4.5% |
| BSX | Boston Scientific | 1.3% | $2.2B | +55.3% |
| ROST | Ross Stores | 1.1% | $1.9B | -0.7% |
| GOOG | Alphabet | 1.1% | $1.9B | -5.6% |
| BABA | Alibaba Group Holding | 1.1% | $1.8B | -0.6% |
| DAL | Delta Air Lines | 1.0% | $1.6B | -0.2% |
| V | Visa | 0.9% | $1.5B | +5.1% |
| BMY | Bristol Myers Squibb | 0.9% | $1.4B | -0.2% |
Biggest adds
- FDXF new
- SPCX new
- DD new
- DVN new
- FHN new
- HON new
- HONA new
- MCK new
- FRVO new
- DXCM new
- BMNR new
Biggest cuts
- FITB exit
- HCAT exit
- GS -99.3%
- HUM -90.8%
Track record
Of 201 position changes scored in 201 separate decisions, 49.8% were on the right side of SPY over the next three months (Disclosures → Smart money).
Open in Disclosures → every quarter, the clone month by month, the smart-money record
Source: SEC Form 13F-HR, filer CIK 763212. Not investment advice.