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SEC Form 13F · Q2 2026
Primecap Management portfolio
Joel P. Fried · Alfred W. Mordecai · Theo A. Kolokotrones · M. Mohsin Ansari · James Marchetti · PRIMECAP MANAGEMENT CO/CA/ · CIK 0000763212
Latest 13F for the quarter ended Jun 30, 2026, filed Aug 14, 2026, compared with the quarter ended Mar 31, 2026.
Reported 13F value$169.1B
Holdings324
Top 10 concentration42.5%
New positions13
Added to84
Reduced177
Closed9
What changed in Q2 2026
Estimated trade value from reported units and period-end values
New positions
Added to
Reduced
Holdings, Q2 2026
324 positions by reported value
| Holding | Portfolio weight | Reported value | Shares / units | Change vs prior quarter |
|---|---|---|---|---|
| MUMICRON TECHNOLOGY INC · COM | 13.12% | $22.2B | 19,217,236 | -12.2% |
| LLYELI LILLY & CO · COM | 6.51% | $11.0B | 9,172,904 | -0.6% |
| INTCINTEL CORP · COM | 6.21% | $10.5B | 75,250,958 | -0.7% |
| KLACKLA CORP · COM NEW | 3.66% | $6.2B | 20,536,730 | +742.5% |
| GOOGLALPHABET INC · CAP STK CL A | 3.14% | $5.3B | 14,859,769 |
Source: SEC Form 13F filings (latest filing on sec.gov). Information and analytics, not investment advice. Holdings are reported as of the quarter end, not live positions; reported 13F value covers securities listed on Form 13F and is not the fund's total assets under management.