Offer your thoughts or opinion on the input financial query or topic using your financial background.

What is the best asset allocation for a retirement portfolio, and why?
Take the easy approach - as suggested by John Bogle (founder of Vanguard - and a man worthy of tremendous respect). Two portfolios consisting of 1 index fund each. Invest your age% in the Fixed Income index fund. Invest (1-age)% in the stock index fund.  Examples of these funds are the Total Market Index Fund (VTSMX) and the Total Bond Market Index (VBMFX). If you wish to be slightly more adventurous, blend (1-age-10)% as the Total Market Index Fund and a fixed 10% as Total International Stock Index (VGTSX).  You will sleep well at night for most of your life.