RPT-As oil plummets, how much pain still looms for US energy firms?
January 12, 2015 at 07:00 AM EST
NEW YORK, Jan 12 (Reuters) - With nearly a quarter of U.S. energy shares' value wiped out by oil's six-month slide, investors are wondering if the sector has taken enough punishment and whether it is time to pile back in ahead of earnings reports later this month.