On December 1, 2015, I've posted a chart of the Nasdaq 100 ETF, QQQ highlighting the trajectory to the 2000 tech bubble high. Here is an updated chart of the QQQ showing it is still on path toward the all time high level at 120.50. From the chart, barring any black swan event, one can estimate the target will likely be hit in January or early February of 2016. This historical milestone might trigger a climactic move that could resulted in a major market reversal.
QQQ (monthly):
(click on the chart to enlarge)