Beware of Dark Pools

Investors need the kind of help a fiduciary provides because it's a jungle out there. The Wall Street Journal (subscription) examines the hazards created by high-frequency traders who lurk in Dark Pools. 

Less than half of securities now trade on exchanges with readily available price information, market analysts say. Many investors remain unaware of the strategies technologically savvy firms use to gain a trading edge, and even large investment firms often can have little assurance someone isn't gaming their orders.