schreef:
Inside the Machine: A Journey into the World of High-Frequency Trading
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“High frequency trading is the liquidity backbone of the equity markets,” Manoj Narang, the founder, CEO and chief investment strategist of Tradeworx, told me when I first met him, in early March. “Long-term investors are the ones who cause bubbles, as well as liquidity crises when these bubbles burst.”
Narang, 40, is one of only a handful of proprietary traders I found willing to talk openly with a journalist about what they do. Most prefer to operate in the shadows, both to protect their valuable algorithms and to avoid regulatory scrutiny. But Narang, who left Wall Street in 1999 to start Tradeworx, sought me out when he heard through a public relations contact this winter that I was working on a story on high frequency trading. His 25-person firm, which operates out of an office above a Restoration Hardware store in Red Bank, New Jersey, trades about 40 million shares a day on about $6 million in proprietary capital. Tradeworx also runs a $500 million statistical arbitrage hedge fund (which trades another 40 million shares a day) and owns a subsidiary, Thesys Technologies, which licenses its high-performance trading platform to other investors.
Narang lifted his profile on May 6 when he revealed to the Wall Street Journal that his firm turned off its high frequency trading computers during the flash crash. Tradeworx wasn’t the only one to do so. Kansas City–based Tradebot, started by BATS founder David Cummings, also stopped trading. Tradebot is one of the world’s two largest high frequency firms, reportedly trading as many as 1 billion shares a day in U.S. equities. Only Chicago-based Getco is thought to be bigger. Although Getco won’t comment on its daily trading volume, a spokeswoman for the firm did tell me that it continued to provide a two-sided market on all the electronic exchanges during the flash crash.
Most high frequency traders, in fact, kept their computers running, according to Jeffrey Wecker, president and CEO of Lime Brokerage. Wecker should know. His firm, which accounts for as much as 5 percent of the daily equity trading volume in the U.S., is the oldest and largest provider of high-speed trading solutions and access to all major U.S. exchanges for high frequency traders.
The high frequency firms that did stop trading on May 6 have been criticized for contributing to the decline by pulling liquidity from the market when it was needed most. But Narang told me that his firm had no choice because the exchanges were likely to cancel, or break, trades that were clearly erroneous (like selling Accenture at a penny a share). “If the exchanges broke all our buys and not our sells, we could have exceeded our capital requirements,” he explained. “We didn’t want to take the risk. The high frequency traders who continued to trade that afternoon made a fortune.”
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