Warren Buffett - Berkshire Hathaway
Holding/activity history for NRG Energy Inc. (NRG)
| Period | Shares | % of Portfolio | Activity | % Change to Portfolio | Reported Price |
| 2010 Q3 | 0 | 0 | Sell 100.00% | 0.27 | |
| 2010 Q2 | 6,000,000 | 0.27 | $21.21 | ||
| 2010 Q1 | 6,000,000 | 0.25 | $20.90 | ||
| 2009 Q4 | 6,000,000 | 0.24 | $23.61 | ||
| 2009 Q3 | 6,000,000 | 0.30 | Reduce 16.67% | 0.06 | $28.19 |
| 2009 Q2 | 7,200,000 | 0.38 | $25.96 | ||
| 2009 Q1 | 7,200,000 | 0.31 | $17.60 | ||
| 2008 Q4 | 7,200,000 | 0.32 | Add 44.00% | 0.10 | $23.33 |
| 2008 Q3 | 5,000,000 | 0.18 | Add 54.41% | 0.06 | $24.75 |
| 2008 Q2 | 3,238,100 | 0.22 | Buy | 0.22 | $42.90 |