the great recession is now officially the longest one in history. it's been 3,454 days and counting since the markets hit their bottom after the financial crisis of 2008. all three major indices have seen huge gains since the end of the recession. the tech-heavy nasdaq is up more than 500% since 2009 thanks to the performance of tech and internet giants like facebook, amazon, apple, netflix and google. the s&p 500 a broad index featuring the 500 largest publicly traded companies in the united states is up more than 300% since march of 2009. in fact, the index hit an all-time high on tuesday. and the dow has made really 30 large publicly owned companies. it's risen 300% during that period. it is down from the record high earlier this year. as the closing bell starts to ring on wall street, the dow is down today on worries about the trade war with china and