Six blue-chip stocks aggressively backed by Warren Buffett are on sale on Wall Street as the year draws to a close, mainly due to broad economic factors and stock market fashion. That makes them worth a look,

Warren Buffett has made some rather bearish moves in Berkshire Hathaway's (NYSE: BRK.A)(NYSE: BRK.B) stock portfolio in the past few quarters. Most notably, the legendary investor disposed of significant portions of both the Apple and Bank of America investments that have performed extremely well for Berkshire.

As one of the most successful investors of all time, every single move that Warren Buffett makes in the markets naturally attracts attention. The ‘Oracle of Omaha’ has managed to outperform the markets on a consistent basis — and while that is a tall order, his approach is based on a surprisingly simple set of rules.