They are owned by the big boys who tell them which direction to send the stock and when to send it the other way for gains. The stock to watch that was Apple. All day Friday was negative from big boy owned media, cnbc, barrons online. etc. They set it up so the big boys could get in cheaper, which they did in the am market and during the day on Monday. Tuesday they ran it up and dumped. Alpha hunters feeding on Beta (us). Learn to play with them to win. Feed on them. It's a 200 billion dollar game they take from those who don't each year.