Jefferies faces possible liquidity crunch

`` The contagion from the rapid downfall of the once little-known financial firm MF Global continues to spread through Wall Street. The investment bank Jefferies is the latest potential casualty. Dozens of Jefferies hedge fund clients are scrambling to find another investment bank where they can warehouse client's money and execute trades, according to sources in the prime brokerage divisions at three competing banks. These sources said they spent all day Thursday fielding calls from hedge funds who could be potential clients. ''