Michael Larson - Bill & Melinda Gates Foundation Trust
Holding/activity history for: Berkshire Hathaway CL B (BRK.B)
| Period | Shares | % of portfolio | Activity | % change to portfolio |
| 2010 Q2 | 73,997,400 | 49.75 | Reduce 3.27% | 1.68 |
| 2010 Q1 | 76,496,900 | 49.09 | Reduce 3.16% | 1.60 |
| 2009 Q4 | 78,996,900 | 49.61 | Reduce 3.07% | 1.57 |
| 2009 Q3 | 81,496,900 | 53.39 | Add 30.26% | 12.40 |
| 2009 Q2 | 62,562,500 | 48.36 | Reduce 3.84% | 1.93 |
| 2009 Q1 | 65,062,500 | 45.20 | Reduce 3.70% | 1.74 |
| 2008 Q4 | 67,562,500 | 47.83 | Reduce 1.82% | 0.88 |
| 2008 Q3 | 68,812,500 | 53.97 | Add 44.87% | 16.72 |
| 2008 Q2 | 47,500,000 | 41.58 | Reduce 2.56% | 1.09 |
| 2008 Q1 | 48,750,000 | 46.00 | ||
| 2007 Q4 | 48,750,000 | 45.65 | ||
| 2007 Q3 | 48,750,000 | 42.23 | Add 95.00% | 20.57 |
| 2007 Q2 | 25,000,000 | 27.14 |