Why first 5 minutes are very important in the stock market ? Why first 5 minutes are very volatile in the stock market ?

S&P 500 is a US Stock Market index which tracks the performance of top 500 companies listed in the US Stock Market or the NYSE and NASDAQ

The beauty of Options Trading is that it can give you 1000xTimes within a day and at the same time it can eat up all of your money.

The truth is that the INDICIES (S&P 500, Dow Jones, Nasdaq) drives the ETF's (SPY, DIA, QQQ) and its not the other way around.