Ghost Exchange probes the current state of US capital markets, the impact of high frequency and algorithmic trading, the lack of, or ineffective regulatory oversight and the risks that are now inherent in our markets by going right to the source -Wall Street's leading insiders - who shine a light on startling signs that the US stock market has built so much speed and complexity into the current system that it is impossible to regulate. The system has become - a Ghost Exchange. The technology powering these markets has evolved at breakneck speed and change has accelerated dramatically. An unrelenting focus on technology, hyper short-term trading, speed, and volume has eclipsed sanity in some areas - benefiting an increasingly smaller group of players. Mathematical algorithms conduct nearly 75% of US stock trades today. Machines trade against each other, chasing mathematical models