It takes about five minutes on any broker that shows the full book to see orders vanish outside the market as it moves. Obviously you haven't bothered to do t

It takes about five minutes on any broker that shows the full book to see orders vanish outside the market as it moves. Obviously you haven't bothered to do that before commenting. If those orders were real and not just fake demand they won't vanish so consistently. Here's a good article for you to read: http://www.bloombergview.com/articles/2014-10-02/prosecutors-catch-a-spoofing-panther http://www.bloombergview.com/articles/2014-10-02/prosecutors... There's a reason why they made spoofing illegal. The problem is, that you can't tell the difference between spoofing and just market making, especially as the algos get particularly complex. And when you start looking at in aggregate you see the real problem.