(NASDAQ: INTC), the world's largest producer of x86 CPUs for PCs and servers, was once a bellwether of the semiconductor sector. But over the past 10 years, its stock has dropped more than 50% as it withered into a less valuable chipmaker than AMD, Nvidia, and Qualcomm.

Intel's fall from grace was caused by manufacturing problems, product delays, market share losses, and jarring strategic shifts under three CEOs. It missed the shift toward mobile chips, focused too much on cutting costs, and kept buying back its own shares instead of resolving its persistent manufacturing issues or investing in new chips.

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Source Fool.com