New York Attorney General Eric Schneiderman vowed today to crack down on the technology that gives high frequency traders an unfair advantage in the market. And that's a very good thing for regular humans with money in the marketplace.
Attorney General Schneiderman specifies some of the services that trading venues offer high speed trading organizations. Some exchanges offer co-location, letting high-frequency traders house their computer servers in the same facility as the trading venue. Others provide extra bandwidth, ultra-fast connections, or dedicated high-speed switches. All of this comes with an exorbitant price tag, and good luck trying to get yourself or your stock broker in on the game.
Thus equipped, high frequency firms can basically get a tip on where the market is headed before it even starts moving. As the attorney general's statement puts it, "if a firm can detect a large order from an institutional investor–like a pension fund–it can instantaneously position itself on the other side of the trade, driving up the prices artificially."
These advantages are measured in mere milliseconds. Today's stock market isn't just steered by frantic people on the trading floor barking orders into their phones like you see in the movies. More and more, the market moves thanks to high frequency trading organizations, using computer algorithms to perform a huge volume of purchases or sales in tiny fractions of a second.
How fast are they? Back in September, traders in Chicago moved on a Federal Reserve announcement five milliseconds before the competition. In human terms, 0.005 seconds is incomprehensibly small—one-sixtieth of the time it takes you to blink. But those Chicago traders got the news faster than it could have physically traveled from New York, launching an investigation into how traders managed to beat physics.