Western Digital Corporation (WDC) saw its stock price surge 5.33% in after-hours trading on Wednesday, following the release of its fiscal fourth-quarter earnings report that surpassed analyst expectations. The data storage giant's impressive performance was driven by robust demand for its products, particularly in the growing artificial intelligence (AI) and cloud computing sectors.

The company reported adjusted earnings per share of $1.66 for the quarter ended June 30, significantly beating the analyst consensus estimate of $1.48. This represents a 15.28% increase from the same period last year. Western Digital's revenue for the quarter came in at $2.61 billion, exceeding the expected $2.47 billion and marking a strong performance despite a 30.79% decrease from the previous year's sales of $3.764 billion.

Looking ahead, Western Digital provided an optimistic outlook for the first quarter of the new fiscal year. The company expects adjusted earnings per share of $1.54 (plus or minus $0.15) on revenue of $2.70 billion (plus or minus $100 million), surpassing analyst projections. This positive guidance, coupled with the growing demand for data storage solutions in AI and cloud computing applications, has bolstered investor confidence in Western Digital's future prospects, contributing to the stock's after-hours rally.