1. Fusion-IOFusion-IO ( FIO) is best known for its solid-state-drives (SSD), and counts Facebook and Apple ( AAPL) as its two largest customers. SSDs allows Facebook to have access to data at faster speeds with lower power and cooling costs. The company recently reported third-quarter earnings that beat analysts' estimates, but shares slipped on gross margin concerns. Revenue rose 40% year-over-year to $94.2 million, earning 6 cents per share, excluding items. Former Apple co-founder Steve Wozniak is the chief data scientist at Salt Lake City, Utah-based Fusion-IO. Shares of Fusion-IO have lost 9.4% this year.