Is that the tax delaying trade people talking about? Also there was 5-day price runup before 30th. Please offer your inside. the link is yahoo finance ndx 1y or 5y chart. http://finance.yahoo.com/echarts?s=^NDX#chart13:symbol=^ndx;range=1y;indicator=ke_sd+volume;charttype=candlestick;crosshair=cross;ohlcvalues=0;logscale=off
Probably more accurate: http://stockcharts.com/h-sc/ui?s=$ndx Yahoo data may be off: http://tinyurl.com/y9jxfdd