Any negative economic news about China sends shivers throughout markets around the world, and its PMI falling to a three-year low was no exception. General Comments China's Purchasing Mangers' Index (PMI), a measure of manufacturing activity, fell to a three-year low, indicating that the Chinese economy is slowing at a faster rate than previously thought. Any negative economic news about that country sends shivers throughout markets around the world, and this was no exception. Asian and European stocks fell as did U.S. stock markets. The Dow closed down 469 points or nearly 3 percent. It was the Dow's third-worst day of 2015, all of which have occurred in the past two weeks of hyper-volatility. Many commodity markets were pummeled as well...