Big money managers led by Fidelity Investments are close to launching a private trading venue designed to let them buy and sell large blocks of stock without the involvement of Wall Street firms and high-speed traders, according to people familiar with the matter. Nine firms including BlackRock Inc., Bank of New York Mellon Corp. , J.P. Morgan Chase & Co. and T. Rowe Price Group Inc., are forming a company that will operate a “dark pool”—a private trading venue in which activity takes place outside of the public view—the people said.

http://www.wsj.com/articles/money-managers-led-by-fidelity-close-to-launch-of-dark-pool-1421710124