$IBM(IBM)$ rose 9% after Wednesday's after-hours announcement of its 24Q4 earnings, bringing the stock to a new all-time high and another company that benefited from the AI surge this quarter.In terms of market feedback, the sentiment given by the market is quite positive due to the Q4 earnings beat and upbeat guidance for FY25.Since the company's valuation level (around 22x forward P/E) is not too high in the AI sector, the market is still willing to pay for it regardless of its revenue growth rate.Investment highlightsRedhat acquisition may be the best decision in history.Double-digit software revenue growth in Q4 (+10% YoY to $7.92bn), driven by further acceleration in Redhat, and AI business orders have exceeded $5bn to date, up nearly $2bn YoY