$NDX - Nasdaq 100 Index. <a href=http://finance.yahoo.com/q/cp?s=%5ENDX> Components </a>. .<a href=http://www.optionsxpress.com/quote_option_chain.asp?SESSIONID=&SYMBOL=NDX> Option Chain </a>. <a href=http://stockcharts.com/c-sc/sc?chart=$NDX,uu[820,780]daclyyay[dc][pb50!d20,2!d30,2!a44.8!f][vc60][iul8!lb9!lD20!la65,90,12!lc20!lg][J3456488,Y]&r=704><img src=http://realtime.bigcharts.com/custom/ameritrade-unified/big.chart?symb=NDX&compidx=aaaaa%3A0&ma=5&mabml=7&uf=0&lf=32&lf2=256&lf3=4&type=4&size=1&state=11&sid=NDX&style=320&time=18&freq=8></a>.<a href=http://stockcharts.com/c-sc/sc?chart=$NDX,uu[820,780]waclyyay[de][pb50!d20,2!d30,2!a44.8!f][vc60][iul8!lb9!lD20!la65,90,12!lc20!lg][J3456488,Y]&r=704><img src=http://realtime.bigcharts.com/custom/ameritrade-unified/big.chart?symb=NDX&compidx=aaaaa%3A0&ma=5&mabml=7&uf=0&lf=32&lf2=256&lf3=4&type=4&size=1&state=11&sid=NDX&style=320&time=2&freq=7></a> <a href=http://www.stockconsultant.com/consultnow/basicplus.cgi?symbol=NDX#ttop><img src=http://realtime.bigcharts.com/custom/ameritrade-unified/big.chart?symb=NDX&compidx=aaaaa%3A0&ma=5&maval=7&uf=0&lf=1024&type=4&size=1&state=11&sid=NDX&style=320&time=18&freq=8></a>.<a href=http://stockcharts.com/c-sc/sc?s=$NDX&p=D&yr=0&mn=4&dy=0&id=p61751406396&r=2773><img src=http://realtime.bigcharts.com/custom/ameritrade-unified/big.chart?symb=NDX&compidx=aaaaa%3A0&ma=5&maval=7&uf=0&lf=1024&type=4&size=1&state=11&sid=NDX&style=320&time=2&freq=7></a> <img src=http://www.ivolatility.com/nchart.j?charts=price,volume&1=ticker*NDX,R*1,period*12,schema*options_big&2=ticker*NDX,R*1,period*12,schema*options_big_narrow&add=x:1> <img src=http://www.ivolatility.com/nchart.j?charts=volatility,options_volume&1=ticker*NDX,R*1,period*12,all*3,schema*options_big&2=ticker*NDX,R*1,period*12,schema*options_big_narrow&add=x:1> <img src=http://www.ivolatility.com/nchart.j?charts=options_volume,volatility&1=ticker*NDX,R*1,period*12,schema*options_big_narrow&2=ticker*NDX,R*1,period*12,all*4,schema*options_big&add=x:1>