Warrent Buffett Accumulates NRG Energy (NRG), Ingersoll-Rand (IR) and Union Pacific (UNP)

There were some important footnotes we left out of the 13F report for Warren Buffett's Berkshire Hathaway. Here is a updated report. Some astute Seekingalpha.com members pointed out the issues.

- New 3,238,100 share stake in NRG Energy (NYSE: NRG)

- Raised stake in Ingersoll-Rand (NYSE: IR) from 936,600 shares to 5,636,600 shares. Footnote: Ingersoll-Rand bought another one of Buffett's stocks Trane (formerly TT), in a deal that was completed June 5th. Holders of Trane received a combination of $36.50 in cash and 0.23 Ingersoll Rand shares of common stock per each Trane share. Buffet held 10,901,900 Trane share at 03/31/08, so a portion of the increased IR stake (about 2.5M) is related to the buyout.

- Union Pacific (NYSE: UNP) from 4,453,000 shares to 8,906,000 shares

Footnote: UNP split 2-for-1, so while Buffett's share went up it was only due to the split and his stake in the company remains the same.

- Lowered stake in Anheuser-Busch (NYSE: BUD) from 35,563,200 shares to 13,845,000 shares. NOTE: BUD agreed to be acquired by InBev, so there is likely no more upside in the stock.

- ConocoPhillips (NYSE: COP) lowered 17,508,700 shares to 0 shares.

Footnote: Confidential information on ConocoPhillips has been omitted from the Form 13F and filed separately with the SEC, so we don't know if Buffett raised his stake or lowered it.

Buffett maintained his position is large holding Wells Fargo & Company (NYSE: WFC), which is worth nearly $9B. He also maintained his massive positions in Procter & Gamble (NYSE: PG) ($7.4B), Burlington Northern (NYSE: BNI) ($6.3B), American Express (NYSE: AXP) ($5.8B) and Kraft (NYSE: KFT) ($4.5B), among others.

Read the Full 13-F Summary Here