Jefferies (JEF +4.3%) jumps following an upgrade from Dick Bove, who now labels the stock...

|By:, SA News Editor

Jefferies (JEF +4.3%) jumps following an upgrade from Dick Bove, who now labels the stock Undervalued instead of Fairly Valued. Clearly the firm stands to benefit from Knight Capital's difficulties, but shares - up more than 20% since Knight's incident - may already reflect that.