The guideline below from the site is commonly cited but never justified: "[Subtract] your age from 110. This number will be the percentage of your assets you s

The guideline below from the site is commonly cited but never justified: "[Subtract] your age from 110. This number will be the percentage of your assets you should invest in equities or stock-based mutual funds. The rest should go into bonds, cash, or other fixed-rate instruments to the balance your portfolio with something safer and less volatile."