Michael Larson - Bill & Melinda Gates Foundation Trust
Holding/activity history for: Costco Co. (COST)
| Period | Shares | % of portfolio | Activity | % change to portfolio |
| 2010 Q2 | 6,128,000 | 2.83 | ||
| 2010 Q1 | 6,128,000 | 2.89 | ||
| 2009 Q4 | 6,128,000 | 3.46 | ||
| 2009 Q3 | 6,128,000 | 3.41 | ||
| 2009 Q2 | 6,128,000 | 3.74 | ||
| 2009 Q1 | 6,128,000 | 3.50 | ||
| 2008 Q4 | 6,128,000 | 3.54 | Add 8.88% | 0.29 |
| 2008 Q3 | 5,628,000 | 3.26 | Add 9.75% | 0.29 |
| 2008 Q2 | 5,128,000 | 3.92 | ||
| 2008 Q1 | 5,128,000 | 3.51 | ||
| 2007 Q4 | 5,128,000 | 3.54 | Add 5.13% | 0.17 |
| 2007 Q3 | 4,878,000 | 3.28 | ||
| 2007 Q2 | 4,878,000 | 4.30 |