IBM Corp (IBM) turned in a fourth-quarter performance Wednesday that had investors feeling pretty good about Big Blue's trajectory. The stock jumped over 8% in after-hours trading as the company showed it's actually executing on the whole AI transformation story, not just talking about it.

The Numbers That Moved the Needle

IBM reported Q4 revenue of $19.69 billion, comfortably beating the consensus estimate of $19.23 billion. Adjusted earnings came in at $4.52 per share, topping the $4.32 analysts were expecting. Total revenue climbed 12% compared to the same quarter last year.

The growth wasn't evenly distributed, which actually tells an interesting story. Infrastructure revenue jumped 21% as customers embraced the new mainframe platform. Software revenue grew 14%, while Consulting posted a more modest 3% gain. It's the kind of mix that suggests real product demand rather than just consulting-driven sales.

On the cash front, IBM generated $4 billion in operating cash flow during the quarter, with free cash flow hitting $7.6 billion. The company closed the period holding $14.5 billion in cash, restricted cash, and marketable securities.

The AI Business Is Actually Real

"In the fourth quarter, we delivered strong revenue growth, with double-digit Software performance. Additionally, Infrastructure continued its double-digit revenue growth with the robust adoption of the next generation of our mainframe platform. Our generative AI book of business now stands at more than $12.5 billion," said Arvind Krishna, chairman, president and CEO of IBM.

That $12.5 billion AI figure is worth paying attention to. It's actual booked business, not just pipeline or potential deals.

Looking Ahead to 2026

IBM expects full-year 2026 revenue of $70.91 billion versus estimates of $70.14 billion, representing constant currency revenue growth exceeding 5%. Free cash flow should increase by roughly $1 billion year-over-year.

"We enter 2026 with momentum and in a position of strength, giving us confidence in our full-year expectations," Krishna said.

The board also approved a quarterly dividend of $1.68 per share, payable March 10 to shareholders of record as of February 10.

IBM Price Action: IBM shares were trading up 8.22% at $318.29 in after-hours action Wednesday.