The information management company's services will include backup and recovery, archiving and storage management. It has about $2.5 billion in annual revenue. Symantec Corp. is the third major tech company to announce a separation in recent weeks. EBay Inc. is planning to spin off its mobile payment service division PayPal, and PC and printer maker Hewlett-Packard Co. wants to split off its technology service business. The company had been reorganizing before announcing the split. Along with replacing its CEO earlier this year — the second time in less than two years that it had fired its CEO — Symantec has trimmed some executive and middle-management jobs, split its sales force and tried to focus on its most promising products. Symantec is planning a tax-free spinoff and wants to complete the separation by the end of 2015. The stock gained 27 cents, or 1.2 percent, to $23.71 in aftermarket trading. The stock has dropped 5 percent over the past 12 months.