3. SK Hynix
SK Hynix, a South Korean memory semiconductor manufacturer, took 4.9 percent of worldwide market share in 2015. The company brought in $16.3 billion in revenue in 2015, up 2.4 percent from 2014.
SK Hynix, which primarily manufactures SRAM, DRAM and Flash solutions, in 2015 said it would invest $38.9 billion to build three new semiconductor fabrication plants by 2024, going head to head with competitors including Samsung.