The Federal Housing Finance Agency is trying to put a dollar amount on damages it believes Nomura Holdings and RBS Securities should pay after a federal judge found the companies liable in connection with Fannie Mae’s and Freddie Mac’s pre-crisis investments in non-agency MBS. Judge Denise Cote of the U.S. District Court for the Southern District of New York said the complex case boiled down to whether the defendants accurately described in the offering documents the mortgages that underlie the securities sold to the government-sponsored enterprises. It was...