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,

Despite once calling Apple the "best business" in the world, Buffett sold 100 million shares in the third quarter, cutting Berkshire's stake by 25%. And while Apple still ranked as the company's largest holding as of Sept. 30, Buffett has now sold more than 615 million shares in the last four quarters.

VeriSign is ranked 5th in the S&P 500 for the highest profit margin, at about 56%, tied with Nvidia, according to third-quarter financial data.

Geico, and pension plans of other Berkshire Hathaway units bought nearly $30 million of shares of domain-name registry firm VeriSign.

Warren Buffett’s Berkshire Hathaway Inc. has been busy over the past week buying stock in an internet domain-name registry company, to extend its stature as the company’s largest shareholder.

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.

Warren Buffett has invested more than $74 million in a Reston company best known for controlling internet domains for organizations across the globe.