IEX will finally launch as a stock exchange today, offering a solution to a problem not everyone agrees exists: Equity markets are “rigged” in ways that favor high-frequency trading. It will be a “soft” rollout, with only two stocks – Vonage (NYSE:VG) and Windstream (NASDAQ:WIN) – trading at first. Eight more will be added Wednesday, followed by more on the following Monday, with all symbols trading by Sept. 2.
