How To Trade The S&P 500 Index And The Market By Using Options Data - Amazon.com (NASDAQ:AMZN)
The end of last week was probably one of the most volatile endings to the week that we have seen in a while. The S&P 500 Index peaked at 4538 to end at 4478.That for the biggest equity market in the world is a substantial intraday move. 
Source: benzinga.com