KEY TAKEAWAYSIBM shares are jumping nearly 8% in premarket trading Thursday, a day after the company posted results that topped analysts' estimates as its artificial intelligence-enabled business surged. IBM reported fourth-quarter adjusted EPS of $3.92, ahead of Visible Alpha consensus of $3.79. Revenue of $17.55 billion was a tick higher than expectations.CEO Arvind Krishna said IBM's "generative AI book of business now stands at more than $5 billion inception-to-date, up nearly $2 billion quarter over qu ...