What are the SPY & QQQ?
The SPY and QQQ are ‘Exchange Traded Funds.’ They represent a basket of stocks mimicking the composition S&P 500 and Nasdaq100 stock indexes. They trade on an exchange just like individual stocks and can be sold short on a downtick. In essence, they allow you to trade the entire stock index much like the SP or Nasdaq futures. However, unlike futures contracts, the QQQ and SPY do not expire and are not leveraged instruments.