7 retirement investing mistakes

Buy and hold can be a smart strategy, but buy and ignore won't serve you in the long run.

Without reviewing your holdings, you won't know if your portfolio remains balanced, and you won't shift your holdings to achieve retirement goals or help you cope with changing life events.

The experts differ on how often you need to do a portfolio review. Some recommend doing so on a quarterly or semiannual basis. Others meet three times a year with clients. But all agree that it's important to review your holdings at least once a year, whether they're within a company-sponsored retirement plan or outside of one.