| # | % | |||||
|---|---|---|---|---|---|---|
| 1 | BERKSHIRE HATHAWAY INC DEL | 511 | 111,143,000 | 43.80% | ||
| 2 | ISHARES NASDAQ BIOTECHNOLOGY ETF | 85,360 | 47,117,000 | 18.57% | ||
| 3 | VERISIGN INC | 400,000 | 26,788,000 | 10.56% | ||
| 4 | BAIDU INC | 118,500 | 24,695,000 | 9.73% | ||
| 5 | CREDIT ACCEP CORP MICH | 55,503 | 10,823,000 | 4.27% | ||
| 6 | MICROSOFT CORP | 200,000 | 8,132,000 | 3.20% | ||
| 7 | MRC GLOBAL INC | 550,000 | 6,518,000 | 2.57% | ||
| 8 | DOLBY LABORATORIES INC | 170,000 | 6,487,000 | 2.56% | ||
| 9 | NOW INC COM | 218,500 | 4,728,000 | 1.86% | ||
| 10 | BERKSHIRE HATHAWAY INC DEL | 31,780 | 4,586,000 | 1.81% | ||
| 11 | MARKEL CORP | 2,325 | 1,788,000 | 0.70% | ||
| 12 | DANAHER CORP DEL | 11,000 | 934,000 | 0.37% |
Portfolio data is normalized using SEC Form 13F filings, including the Original 13F-HR (0001569606-15-000002, filed 2015.04.27).
From 2023-01-03 onward, the SEC requires values to be reported in nearest dollars. Earlier filings reported values in thousands; therefore, positions shown as $0 in older filings may represent actual values between $0–$999.
