Jefferies Financial Group Inc. (NYSE: JEF) reported first-quarter results that fell short of earnings expectations, even as the firm delivered strong revenue growth across several business segments. The investment bank posted adjusted earnings per share of $0.70, below the consensus estimate of $0.95. Revenue totaled $2.02 billion, matching analyst expectations and rising 27% year over year from $1.59 billion in the same quarter last year. Investment Banking net revenue reached a record $1.02 billion, incre ...