Shares of the health care company Humana Inc. rose on federal government news that Medicare Advantage cuts will be less than previously expected. Humana had estimated a funding cut of 6 to 7 percent for 2015, according to a document filed with the SEC. Now, the expected cut is between 3.5 and 4 percent. Humana is a big player in the Medicare Advantage business, which is the private version of the government’s program. About 1.9 million of Humana’s 12.1 million members are Medicare Advantage members.