Warren Buffett’s Berkshire Hathaway Inc. added to its stake in the internet domain-name-registry company VeriSign Inc. in the final week of the year, according to a regulatory filing.

Warren Buffett went a buying spree in late December, purchasing VeriSign stock in multiple sessions through Dec. 24.

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.

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 continued to sell Apple stock in the third quarter, while starting a small position in Domino's Pizza. Apple has cultivated tremendous brand authority in consumer electronics,

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,