Today is the last day of the mock portfolio investing game. I started investing on October 9, 2006. How did I do? Let's see.

The Sharpe Ratio of my portfolio is 4.81. The ratio is a measure of the risk-adjusted return of an investment, and values over 3.0 are considered to be good. The higher, the better.

The graph of returns:

Total value as of market close on December 8, 2006: $105,814.37

Amount leveraged: 48% (this is very high, and probably stupid if it were real money)

Return of portfolio during investing period: 5.8%
Return of S&P 500 during investing period: 4.2%

Big winners: iShares MCSI Spain Index, The India Fund, iShares Latin America 40**
Big loser: Amazon
Most volatility (hang on!): Gilead Sciences, Google

So, if the goal were to beat the S&P 500 Index, then I met that goal by beating the index by 1.6%. However, let's say, hypothetically, that expenses for managing the fund are 1.4%, which is the average fee ratio for actively managed mutual funds. That leaves the account with a gain of only 0.2%.

There's a pretty strong argument for index-style investing.