Western Digital's stock surged 5.09% in pre-market trading, reflecting strong investor sentiment towards the data storage company.

The rally is primarily attributed to sustained artificial intelligence infrastructure buildout, which is accelerating demand for high-capacity enterprise hard disk drives and solid-state drives. Additionally, optimistic expectations surrounding the company's strategic split of its flash memory and hard drive business units continue to support market confidence.

Further bolstering the move, multiple investment banks have recently raised their target prices on the stock, including Citi to $800, BNP Paribas to $660, and UBS to $560, signaling institutional belief in the company's prospects. Bullish options activity, highlighted by a significant $1.2 million out-of-the-money put sale, also points to investor confidence that the shares will hold their value.