Western Digital shares rose after a UBS analyst upgraded the company's stock from "Buy" to "Neutral," citing a predicted sales seasonal increase in the PC market later this year.
Western Digital posted third-quarter profit of $121 million, a 19% increase from $102 million a year ago.
An industry report showed that sales of 3.5" hard disk drives used in desktops and low-end servers decreased at the end of the quarter. Shares of Western Digital fell by $0.52, or 3.1%, along with that of other hard disk manufacturers.