DIG DUG ultra long/short oil ... <img src=http://stockcharts.com/c-sc/sc?chart=dig,uu[w,a]dacayyay[dd][pb100!b200!d20,2][vc60][iLb5!Lb14!La13,21,3]> <img src=http://stockcharts.com/c-sc/sc?chart=dug,uu[w,a]dacayyay[dd][pb100!b200!d20,2][vc60][iLb5!Lb14!La13,21,3]> Weekly <img src=http://stockcharts.com/c-sc/sc?chart=dig,uu[w,a]wacayyay[de][pc9!c40!d20,2][vc60][iLb5!Lb14!La13,21,3]> <img src=http://stockcharts.com/c-sc/sc?chart=dug,uu[w,a]wacayyay[de][pc9!c40!d20,2][vc60][iLb5!Lb14!La13,21,3]> DIG - 6 Months <img src=http://www.ivolatility.com/nchart.j?charts=price,volume&1=ticker*DIG,R*1,period*6,schema*options_big&2=ticker*DIG,R*1,period*6,schema*options_big_narrow&add=x:1> <img src=http://www.ivolatility.com/nchart.j?charts=volatility,options_volume&1=ticker*DIG,R*1,period*6,all*3,schema*options_big&2=ticker*DIG,R*1,period*6,schema*options_big_narrow&add=x:1> <img src=http://www.ivolatility.com/nchart.j?charts=options_volume,volatility&1=ticker*DIG,R*1,period*6,schema*options_big_narrow&2=ticker*DIG,R*1,period*6,all*4,schema*options_big&add=x:1> DUG - 6 Months <img src=http://www.ivolatility.com/nchart.j?charts=price,volume&1=ticker*DUG,R*1,period*6,schema*options_big&2=ticker*DUG,R*1,period*6,schema*options_big_narrow&add=x:1> <img src=http://www.ivolatility.com/nchart.j?charts=volatility,options_volume&1=ticker*DUG,R*1,period*6,all*3,schema*options_big&2=ticker*DUG,R*1,period*6,schema*options_big_narrow&add=x:1> <img src=http://www.ivolatility.com/nchart.j?charts=options_volume,volatility&1=ticker*DUG,R*1,period*6,schema*options_big_narrow&2=ticker*DUG,R*1,period*6,all*4,schema*options_big&add=x:1> <a href=http://www.ivolatility.com/help/2.html>Understanding Implied and Historical Volatility</a>