She also suggested putting big blocks of money into "private" stock and bond pools.

FORBES: The 2005 Investment Guide

Stock trading via dark pools in the U.S. is up almost 50 percent since 2009.

FORBES: Lighting Up Dark Pools And Dissing Dodd-Frank

Cummings believes in creating vast pools of liquidity in the stock market, just as the nyse and Nasdaq do.

FORBES: Magazine Article

In my recent post (on how little has changed in the way the financial industry can find ways to return to business as usual), I noted that the SEC says 8% of stock trading is now taking place in dark pools.

FORBES: How Dark Pools Harm Public Investors

The high-speed traders whom the exchanges desperately want to retain or win back from the dark pools are part of the reason the stock market looks so scary to individuals these days.

FORBES: Does NYSE's 4.8% Dividend Yield Make It A Bargain?

Dark pools are trading venues that trade outside of a stock exchange.

FORBES: Move Over NYSE And NASDAQ, There Are New Exchanges In Town