4. Micron Nabs Elpida For $2.5 Billion
They may not be household names, but these two companies teamed up for one of the biggest IT acquisitions of the year. Micron, a semiconductor company based in Boise, Idaho, spent $2.5 billion to acquire Elpida Memory, which had declared bankruptcy earlier in the year. The move gave Micron Elpida's DRAM products and strengthened Micron's market share in the memory sector.