In a quiet office in suburban Greenwich, Conn., 45 minutes from bustling Wall Street, a little-known firm called Timber Hill LLC is trying to grab a bigger share of the world's foreign-exchange trading business.

Timber Hill's head of foreign-exchange trading, 28-year-old Matt Lauria, hopes to challenge Wall Street's banks by using high-speed technology to pump out currency prices at extreme speeds, thus quickening transactions for hedge funds and other computer-driven investors looking for cheaper, more discreet trading.

The firm is one of many electronic upstarts bringing rapid-fire automated trades to the global currency markets, where such high-frequency trading has been slow to catch on. Burned by bad bets on mortgages and risky derivatives during the financial crisis, some Wall Street banks and investors are looking at the relatively stable foreign-exchange market to generate income. That has fueled a three-way race to build faster systems, a race between such Wall Street giants as Deutsche Bank AG, the biggest currency-trading venues like brokerage ICAP PLC's EBS, and smaller market participants like Chicago's Allston Trading LLC; Currenex, owned by State Street Corp.; and Timber Hill, a unit of Interactive Brokers Group.

In seeking to offer easier ways to make money from currency trading to more investors, including individual players too small for Wall Street, these players are tussling for greater clout over the $4 trillion-a-day global foreign-exchange industry.

"There's been a seminal change in how investors are allocating cash to high-frequency trading," says John Netto, founder of New York-based M3 Capital LLC, a high-frequency trading firm. "Investors' desire for liquidity and transparency is now driving how investments are structured. It's now investors who are controlling the terms."

The move to high-speed currency trading is gathering steam. High-frequency trading accounted for roughly 30% of all foreign-exchange flows, as of 2010, compared with 13% in 2004, according to Boston-based consulting firm Aite Group. (By contrast, 66% of global stocks trading is high frequency.) About 85% of the currency market's growth in volume from 2007 to 2010 came from financial institutions like hedge funds rather than Wall Street's traditional bank currency dealers, thanks partly to high-frequency traders, say analysts at Brown Brothers Harriman, based on data from the Bank for International Settlements.

Hotspot FX, a small currency-trading platform owned by Knight Capital Group Inc. that serves hedge funds and high-speed traders, saw around $1.3 trillion in volume last month, a 72% jump over the same month last year. "We've really had some exceptional growth in the last two years," says director William Goodbody.

Things could heat up further. While new financial regulations and last May's flash crash in U.S. stocks have intensified scrutiny of high-frequency trading, efforts on Capitol Hill to make derivatives safer could push some foreign-exchange options trading onto electronic systems, possibly giving high-speed trading a boost, bankers say. Currently, most high-frequency currency trading involves actual currencies, not derivatives, which are mostly traded over the counter. Aite Group expects the proportion of currency trading that is high frequency to jump 41% this year and next, compared with a paltry 2% rise for stocks.

As nonbank currency-trading venues have proliferated, prices have become more easily available and once-distant market participants have begun trading with each other. That's eroded the value of traditional Wall Street middlemen, whose profit margins in foreign exchange have narrowed. And with market participants now less able to gain a trading edge through privileged access to prices, they have moved into high-speed systems to gain a timing advantage instead.

A former currency derivatives trader in Royal Bank of Scotland Group PLC's Greenwich office, Lauria left the bank two years ago to beef up Timber Hill's presence as a high-frequency market maker in foreign exchange. (Market makers are middlemen who buy and sell to facilitate trading, while trying to profit on their trades.) Until about five years ago, Timber Hill, which was formed in 1982, focused mostly on stock options.

"My first day, it was so quiet," Lauria recalls. "At RBS, in the foreign-exchange options group, people were constantly shouting over the boxes to their brokers to do their trades. When I got here, it was subdued. It had to do with everything being done electronically."

After checking his profit-and-loss figures each morning around 7, Lauria these days spends much of his time figuring out how to adjust his technology to speed up Timber Hill's ability to shoot out prices as fast as possible.

Speed, anonymity and liquidity, which is the ability to buy and sell easily, are the top priority for today's currency traders. In the past, a hedge fund might approach a single Wall Street bank to trade $3 million and receive a bid/ask spread, which is the gap between what sellers are offering and buyers are willing to pay, of around 2 or 3 pips, which are tiny increments of currency prices. Banks would then offload their risks by trading with rivals in an interbank electronic trading market.

Now, with direct access to an electronic trading system, the hedge fund can trade $10 million with a dozen banks at once at a spread of one pip. Even better, the hedge fund doesn't need to spend cash setting up trading links with various banks, which often only want to serve bigger investors.

Some observers complain that high-frequency and so-called algorithmic traders make life harder for other participants in the currency markets, especially Wall Street's big banks.

One worry: High-speed trading may make currencies more volatile during times of market stress. Sharp moves can hurt smaller investors who can't react as quickly.

With so many computer-generated trades "programmed in" every day, investors may develop an exaggerated sense of the market's liquidity, which means any sharp withdrawal of liquidity hurts all the more, says a top Wall Street foreign-exchange banker. An analogy is the difference between a normal person and a manic-depressive, this source says. "A normal person gets happy or sad, but a manic depressive person can get suicidal."

Take the Japanese yen. A few days after Japan's 9.0-earthquake and tsunami last month, the yen soared 4.6% against the dollar within minutes after 5 p.m. in New York, a time when few investors around the globe are at their seats. Many blamed the March 16 surge on a freak combination of stop-loss orders, which automatically buy or sell when currencies hit extreme levels, and an unwinding of currency derivatives trades. But others pointed to the possible role of computer-driven trading.

"The move was swift and illiquid," wrote J.P. Morgan Chase & Co.'s Michael Grise in an e-mail to clients on March 16 that was obtained by the Wall Street Journal. "There was very little active customer flow, the bulk of our volume was standing stops and algorithmic traders on the machines."

Other observers dismiss such concerns, saying investors generally have a poor understanding of high-frequency and algorithmic trading strategies, which often involve nothing more than doing the same trade but faster. Fears of high-speed trading, according to this view, are only the latest version of a long-held suspicion of hedge funds.

M3 Capital's Mr. Netto says computer-generated trading may intensify minor moves at key times, such as the release of a major economic report, since traders are using programs to react. But, by and large, such effects are negligible for the currencies.

The benefits far outweigh the costs, says Timber Hill's Lauria. "In the past, there would have been 10 major banks making markets in FX, and all it took then to cause a crash was 10 people to throw up their hands. Now, because you have so many market makers out there, in order to have a crash you have to have 1,000 people saying, 'Hey, I'm not willing to buy,'" he says.

"If you increase the number of players, you're going to have better markets that are more resilient," he says.

-By Neil Shah; Wall Street Journal; 212-416-2619; neil.shah@wsj.com

 
 
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