Overnight trading volume seemed slightly higher than has been usual recently, but price action for grain and soy futures markets was muted nevertheless. Corn prices held around unchanged, and wheat was fractionally lower. Most of the action occurred in the soy complex as overnight selling pushed soybean prices 4-5 cents lower. However, the grain and soy markets were an island of calm in what was otherwise a macro risk-off environment. Most financial and commodity markets were lower and, in some cases, sharply so, a trend that accelerated during the morning. Dow futures were off 350 points overnight, and not long after the stock market opened, they plummeted almost 550 points following a sharply lower Chinese stock market. Slowing corporate...