Since the first day of the new QQQ short term up-trend, the QQQ has advanced + 6.5%, but TQQQ is up +19.9%. Only 5 of the NASDAQ100 stocks advanced more than TQQQ. I buy TQQQ because I cannot identify in advance the five stocks that could beat TQQQ (WDC,MU,KLAC,SYMC and SBUX). Only 13 (under 3%) of the stocks in the S&P500 index rose more than TQQQ. I also write weekly calls on TQQQ and SPY.