http://finance.yahoo.com/echarts?s=SPY+Interactive#{"range":"10y","allowChartStacking":true}
http://stockcharts.com/h-sc/ui?s=spy
Trade:
With SPY at 188.83
Sept 125/120 bull put spread for a net credit of $26
Yield = 26/474 = 5.5% in 247 days or 8.1% annualized
Prob = 98%
Expectation = .98(26)...