Billionaire Warren Buffett's Berkshire buys Activision Blizzard, cuts healthcare positions

Investors monitor Berkshire's investments closely to see where Buffett (pic) and his investment managers Todd Combs and Ted Weschler see value.

NEW YORK: Warren Buffett's Berkshire Hathaway Inc said on Monday it added nearly 14.7 million shares of video game maker Activision Blizzard Inc ahead of Microsoft Corp's US$68.7 billion deal to buy the company.

The company also added to its position in energy giant Chevron Corp while slicing its position in healthcare names including Bristol-Myers Squibb Co and Abbvie Inc during the quarter that ended in December.