Assuming 30 trading days horizon, S&P 500 is expected to under-perform the Security. But the index apears to be less risky and, when comparing its historical volatility, S&P 500 is 2.8 times less risky than Security. The index trades about -0.05 of its potential returns per unit of risk. The Security Federal Corp is currently generating about 0.34 of returns per unit of risk over similar time horizon. If you would invest  1,130  in Security Federal Corp on May 20, 2013 and sell it today you would earn a total of  120.00  from holding Security Federal Corp or generate 10.62% return on investment over 30 days.