Bloomberg Berkshire Hathaway Inc., the conglomerate controlled by billionaire Warren Buffett, said fourth-quarter profit climbed 32 percent on investments and earnings from the company’s expanding stable of operating businesses. Net income rose to $5.48 billion, or $3,333 a share, from $4.16 billion, or $2,529, a year earlier, the company said in a statement. Operating earnings, which exclude some investment results, …

Ottawa / Bloomberg Canada should increase foreign-ownership limits on airlines and allow private investment in airports to enhance competition in the country’s transportation industry, according to a government-funded study. Institutional and private-equity investors should also be allowed to buy stakes in the country’s marine ports, according to the Canada Transportation Act Review presented to Parliament in Ottawa. The broadest study …

NEW YORK / AP Gap’s shares took a hit in after-hours trading after the clothing chain offered a weak profit outlook. The outlook came as the San Francisco-based chain reported a 33 percent drop in fourth-quarter profits as business was hurt by a strong US dollar and strategic moves to turn around its ailing business. The results show the continued …