DOW JONES NEWSWIRES 
 

Nasdaq OMX Group Inc. (NDAQ) said it will stop offering flash order types on Sept. 1 as controversy about them continues to build, and called on other exchanges to follow its lead.

The Securities and Exchange Commission is considering a ban of the cutting-edge electronic trading. A flash order lets some traders have a sneak peek at market activity.

But Nasdaq said in a brief statement Thursday it doesn't have to wait until regulator action to make its move. "We respectfully call on other markets offering similar functionality to make the same decision," it added.

NYSE Euronext (NYX), which operates the New York Stock Exchange, has been a vocal critic of flash orders, as several of its rivals have adopted some form of the trading method and have gained market share.

The outcry against flash orders burst into public view last month after Sen. Charles Schumer, D-N.Y., told the SEC in a letter he would move to limit flash orders - which have picked up in recent months - if the commission didn't. In such orders, trades are routed through private liquidity pools before being sent onto other exchanges for filling.

Critics have argued that having private-quote data available to some investors - those with access to the private liquidity pools - and not all, could increase costs. In addition, the price of an underlying security is harmed by creating a two-tiered system of investors where those with access get a better price than those without.

-By Kevin Kingsbury, Dow Jones Newswires; 212-416-2354; kevin.kingsbury@dowjones.com