SEC Filing Shows Buffett Played It Safe Ahead of His Burlington Northern Buyout

Having gone “all in” on a U.S. economic recovery with his $44 billion acquisition of Burlington Northern Santa Fe Corp. (NYSE: BNI), Warren Buffett showed a less aggressive stance in Berkshire Hathaway Inc.'s (NYSE: BRK.A, BRK.B) Nov. 16 filing with the Securities and Exchange Commission (SEC).

Buffett trimmed Berkshire's holdings in riskier businesses that have uncertain futures, such as newspapers, healthcare companies, and credit ratings agencies in favor of more stable long-term picks such as Wal-Mart Stores Inc. (NYSE: WMT) and ExxonMobil Corp. (NYSE: XOM).

The 13-F filing showed that as of Sept. 30 Berkshire had increased its Wal-Mart holdings by almost 90% over the summer, adding 18 million shares worth nearly $1 billion.