Buffeted by concerns about the economy and IT spending, tech stocks have gone on a roller coaster ride lately, but on the whole they've managed to hang on to gains they made earlier in the quarter.

Despite dismal forecasts for PCs and servers, tech stocks have been doing well on optimism about cloud technology and mobile devices.

PC sales in China and high growth in smartphones shipments helped boost Lenovo's net profit for its fiscal fourth quarter by 90 percent year-over-year.

Donations to WikiLeaks since January have only been enough to cover expenditures in essential infrastructure, such as servers, according to a transparency report.

Vodafone's revenue dropped 4.2 percent for its fiscal year to March 31, because of tough economic conditions, particularly in Southern Europe.

Six months after its launch, the iPad Mini is a drain on Apple's profits, but the company is willing to endure the financial strain as long as it can sell more iPads, analysts said.

As it has in the past, SAP spilled the beans a bit early on its fourth-quarter and year-end performance with the release of preliminary results last week. Now the vendor is about to do a full announcement along with the usual conference calls with press and analysts.

Oracle's second-quarter earnings announcement beat expectations in some respects, but also raised a number of interesting and in some cases, unanswered questions. Here's a look.

Hewlett-Packard's bombshell revelation that it would take a US$8.8 billion non-cash writedown after allegedly discovering major accounting fraud related to its Autonomy business unit has rocked the tech world.

Four things are clear from Cisco’s better-than-expected Q1 FY 2013 results: