Asset Comparison and Correlation

Assuming 30 trading days horizon, SP 500 is expected to generate 1.16 times less return on investment than American. But when comparing it to its historical volatility, S&P 500 is 1.04 times less risky than American. It trades about 0.56 of its potential returns per unit of risk. American Funds AMCAP R3 is currently generating about 0.63 of returns per unit of risk over similar time horizon. If you would invest  2,367  in American Funds AMCAP R3 on April 21, 2013 and sell it today you would earn a total of  150.00  from holding American Funds AMCAP R3 or generate 6.34% return on investment over 30 days.