Buffett add

Berkshire Hathaway said yesterday in a regulatory filing that the Warren Buffet-led company held 1.7 million shares of Liberty Media and 20.3 million shares of DirecTV as of Dec. 31.

Global news

MF Global Holdings will share some information about its communications in the final days before its bankruptcy, Louis Freeh, its Chapter 11 trustee. said.

Geithner plan

Treasury Secretary Timothy Geithner said he plans to propose new corporate-tax rules that cut rates while closing many loopholes, measures meant to simplify the code while increasing the number of companies that contribute to government coffers.

Paulson plea

Billionaire John Paulson, who controls one of the largest stakes in Hartford Financial Services Group, filed a document with regulators so he can approach other investors about his plan to break up the insurer.

Greece mess

The Greek economy remains in a deep recession — Q4 gross domestic product dropped 7 percent — confirming the painful effects of austerity reforms intended to lower debt.