I took some numbers off the chart for 11 years from 02/09/2010
QQQ = 21.6% compounded annually (don't know about the impact of dividends, if any, in either case)
TQQQ = 56.3% compounded annually,
So... 3x, 21.6% = 64.8%, but TQQQ was "only" 56.3%.
The...