One interesting (and to me somewhat scary) phenomenon is that very little of the trading now is done by actual humans; something like 90% of the trades are done by computers running highly specialized software algorithms.
The computer trading was mentioned on FOX Business this morning. When the stock market makes 13,000, the computers boost it into a rally.
Low volume - computers and speculators...seems to me like the computers are ‘trimming’ the amateur speculators that think they can make money with a computer program they bought for 199.95 (reduced to three easy payments of 19.95) at three AM in the morning off TV....