6 ways to screw up your retirement plan
Mistake No. 5: Too much company stock
Financial advisers caution you should have no more than 10 percent of your retirement account in your employer's company stock. If you're concentrated in a single security, you get hit with a double whammy if your company hits hard times and you lose your job.
"If you're thinking, 'What about the Facebook or Google employees who are now millionaires because of their stock?' don't confuse luck with skill. ... There are many former employees of Enron, PanAm, WorldCom and others who also believed in their company's stock," Gordon said.