The performance tables below will allow you to compare the performance of
the POWERSHARES QQQ TRUST (QQQ) stock and the S&P 500 Index(^SPX) (you may select other index
from the list below). We provide performance comparison for the most recent
trading session, for the past month (30 days) for 52 weeks (1-year) and YTD.
Several timeframes help evaluating whether current QQQ stock's
performance is in the range of the average yearly, monthly or YTD performance. The "Ratio (%)"
is calculated as a ration between SPX index and QQQ stock
data. Since SPX index and QQQ stock prices are
in different range the "Ratio (%)" helps to compare SPX index and QQQ
stock performances. At the same time the "Ratio (%)" allows to see what
percentage of index's volume (if QQQ stock is listed in the SPX index)
belongs to the QQQ stock.