UPDATE 1-Fannie, Freddie shares slump after investor lawsuit dismissed

Oct 1- Shares of Fannie Mae and Freddie Mac plummeted on Wednesday, the day after a judge upheld the U.S. The over-the-counter common shares of both companies were down by more than a quarter, with Fannie Mae sliding 27 percent to $1.96 and Freddie Mac dropping 26 percent to $1.96.