Delta calc only does 3 points but you could compare the two and subtract the estimated % loss from the I/V as CME climbs. Don't draw horizontal lines:) 2mo daily charts <img src=http://bigcharts.marketwatch.com/charts/big.chart?symb=CNM=FT&compidx=aaaaa%3A0&ma=0&maval=9&uf=0&lf=1&lf2=0&lf3=0&type=4&size=2&state=8&style=320&time=4&freq=1&comp=NO%5FSYMBOL%5FCHOSEN&nosettings=1&rand=4408&mocktick=1>. <img src=http://bigcharts.marketwatch.com/charts/big.chart?symb=CME&compidx=aaaaa%3A0&ma=0&maval=9&uf=0&lf=1&lf2=0&lf3=0&type=4&size=2&state=8&style=320&time=4&freq=1&comp=NO%5FSYMBOL%5FCHOSEN&nosettings=1&rand=4408&mocktick=1> CME - 2 Months <img src=http://www.ivolatility.com/nchart.j?charts=price,volume&1=ticker*CME,R*1,period*2,schema*options_big&2=ticker*CME,R*1,period*2,schema*options_big_narrow&add=x:1> <img src=http://www.ivolatility.com/nchart.j?charts=volatility,options_volume&1=ticker*CME,R*1,period*2,all*3,schema*options_big&2=ticker*CME,R*1,period*2,schema*options_big_narrow&add=x:1> <img src=http://www.ivolatility.com/nchart.j?charts=options_volume,volatility&1=ticker*CME,R*1,period*2,schema*options_big_narrow&2=ticker*CME,R*1,period*2,all*4,schema*options_big&add=x:1>