Chief Market Strategist and Mike O Rourke

Mike O Rourke: The lesson for investors? Tread carefully. , according to Market Watch. It reminded people that the stock market can actually go down. It seems like a lot of people had forgotten, said Mike O Rourke, chief market strategist at JonesTrading. NEW MarketWatch If the ups and downs of the past week have taught investors anything, its that there are cracks in this 5 1/2-year-old bull market. Stocks took a tumble as a raft of economic data sparked fears the Federal Reserve could speed up its timetable for raising interest rates. The S P 500 index /quotes/zigman/3870025/realtime SPX 0.72% took its biggest weekly hit in more than two years, losing 2.7%. The Dow Jones Industrial Average /quotes/zigman/627449/realtime .46% , meanwhile, sliced through its 50-day moving average and erased the gains that had tenuously built up this year. (news.financializer.com). As reported in the news.