Asset Comparison and Correlation

Assuming 30 trading days horizon, S&P 500 is expected to generate 0.55 times more return on investment than Platinum. However, S&P 500 is 1.82 times less risky than Platinum. It trades about 0.56 of its potential returns per unit of risk. Platinum Underwriters Holdings Ltd is currently generating about 0.19 per unit of risk. If you would invest  157,878  in S&P 500 on April 21, 2013 and sell it today you would earn a total of  8,751  from holding S&P 500 or generate 5.54% return on investment over 30 days.