High Frequency Trading: The Rise of the Machines

As a professional trader, you are confronted daily with all kinds of dynamics and situations that require a flexible and adaptive mind. You are faced with multiple variables constantly interacting with each other and your task is to process ever-changing information quickly and profitably. Valuations arbitrage, reflexive supply-and-demand dynamics, and structural changes are recurrent landmines in the typical day of traders and money managers.

We accept this “dangerous” line of work for only two reasons: monetary compensation and pride in being part of capital markets, that transmission mechanism without which innovation and creativity would be prisoners of their own ethereal state.

As a society, we are ready to strike compromises in return for a system that will allow the ethereal state of our creativity to turn into reality. We allow market insiders like market makers, broker-dealers, and others to have small advantages over us mortal investors in order to have them create the positive externalities that help us build a more sophisticated economic system. We give market makers and specialists a privileged look at the order flow (the supply and demand of stocks) in exchange for their commitment to maintaining orderly markets whenever an imbalance occurs.

We give systemic firms like JP Morgan and Goldman Sachs privileged access to liquidity via the Federal Reserve so that the banking system and capital markets can continue to serve us in our quest to invent, produce, and distribute new products. But sometimes things turn out more like a bad inland casino rather than a better market… We may still be reeling from the systemic economic collapse of last year, but new structural changes with potential negative externalities are already at our door.

For months I have witnessed strange dynamics in the way markets behaved: liquidity issues, intra-day volatility, and a constant disconnection between technical, sentiment and fundamental inputs. Markets often go through periods of irrationality, but this time it felt different.

As a professional trader and an educator on markets, my sensitivity level is higher than normal and I immediately began conducting research to make sense of my discomfort. This process pointed consistently to one element: high frequency trading or as I like to call it “the rise of the machines.”

What is High Frequency Trading?

High frequency trading (HFT) was, until recently, a topic confined to Wall Street insiders. Only in the last few weeks has it become a mainstream subject of debate via articles on theNew York Times, the Washington Post, and interviews on CNBC (yes even CNBC’s clueless anchors can now spell HFT).

The reason for this foray into the mainstream media is the potential negative ramifications HFT can have for all of us: investors, entrepreneurs, and just plain hopeful citizens.

But first, let’s define HFT as it is a very technical classification that, nonetheless, encompasses many different things. Generally speaking, HFT is high velocity trading based on mathematical algorithms that create huge daily volume on different electronic exchanges and platforms. It is machine against machine—endless trading in order to capture fractions of pennies in profits. But, so far so good: the machines provide liquidity to all of us. The owners of the machines (financial institutions) make an all-American profit and the liquidity aggregators (electronic exchanges) provide competition to other exchanges in the most capitalistic way.

But what happens if we scratch the surface? Like Michel de Montaigne, the famed Renaissance scholar, once said: “There is no man so good, who, were he to submit all his thoughts and actions to the law would not deserve hanging ten times over.”

High frequency algorithmic trading is ridden with issues:

Volume. Machine-driven trading is over 60% of trading volume on a daily basis and in some confined cases it can be as high as 90%.

Adaptability. Machines are unthinking units that do not adapt to human reactions. HFT algorithms are based on correlations and historical relationships, which are great guidelines for trading and investing but by no means they can be used blindly (see: 1987 portfolio insurance, long-term capital management 1998, credit default swaps 2008, mortgage-backed securities 2008…the list of quant-related disasters is a sad one).

Exclusivity. HFT can only work by using incredibly fast and powerful computers that also must be placed in the exchanges as proximity helps the speed. Few people can afford the computers and/or the co-location fees charged by the electronic exchanges.

Flash quotes. Some brokers have access to quotes of orders before anyone else. By exploiting the speed of their machines, they can either arbitrage price differentials or potentially front-run clients. Another abuse of flash quotes (called flash because they last one–to-three milliseconds) is that they can be used as teaser quotes to gauge supply and demand without the risk of being hit due to their quickness.

Rebates. Many high frequency traders trade not for profit but for rebates paid by the electronic platforms to attract liquidity. This escamotage incentivizes useless and toxic volume.

While these are only the most immediate concerns about HFT, they have a potentially disproportionate influence on the cost of running our capital markets. The HFT lobby pushes the argument that they create positive externalities by exploiting improving technology—but there is a difference between volume and liquidity.

If over 60% of trading is toxic, it will go away in a nanosecond and most likely it will dissipate right when investors and money managers need it the most. This could cause a huge liquidity vacuum and a 1987-type of event. Liquidity is created by market players with a stake in the game, not by casino-like machines. Flash quotes and “predatory algorithms” also raise the cost of execution for the necessarily slower institutions like pension funds and mutual funds. Additionally, the surreal tempo of machine trading makes trading for all more expensive as we now have to prepare for the irrational moves and volatility of markets when executing our trades.

I love this business and I love technology, but checks and balances are needed to preserve our capital markets. Little adjustments can be made to reduce systemic risk, like re-instating circuit breakers that cut off program trading when price changes accelerate beyond certain parameters, like investigation or stopping flash quotes that drive front running, like making good on teaser quotes for longer than just three milliseconds, and so on. In the end, we need to understand that capital markets are here not to destabilize our economy, but to serve us as a society and help us make better lives.

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Source:

http://gbr.pepperdine.edu/blog/index.php/2009/08/10/1341/

Dollar Alarm - The Currency Paradigm

This recent op-ed from the WSJ, presents a fine discussion of some of the issues facing G7 Central Banker’s, in the wake of turmoil in the world’s financial markets. In particular it focuses on US monetary policy, and its effects on other world currencies.

“Currencies are not a typical commodity, like wheat or platinum. They are a medium of exchange. While currencies are freely traded in a world of floating exchange rates, the supply of dollars, euros or yen is set by a cartel of central banks. Those banks can influence exchange rates by signaling a change in their respective monetary policies.”

I wonder if the author is aware that the phrase “cartel of central banks” is likely to be borrowed by all manner of “causes” as the underpinning of proof of some paranoid conspiracy, hatched in the nether regions of the web.

Seriously though, the limited supply of money, combined with relatively unlimited exchange of money, certainly differentiates fiat money from good ol’ fashioned bricks and mortar commodities.

“This is where the currency traders will test the G-7's sincerity. The hint that the countries might "cooperate" to influence exchange rates is a warning that central banks could intervene in currency markets and catch some traders on the wrong side of a bet. However, such interventions are typically "sterilized," which means that the banks quickly mop up whatever dollars or euros they use to intervene in markets. If central banks really want to put a floor under the buck, the Federal Reserve will have to change its weak-dollar policy.”’

Sterilized… indeed. That’s the straight-dope on Central Bank realpolitik courtesy of the Wall Street Journal, and your good friends at http://GlobalITandBusinessnews.blogspot.com.

“Dollar weakness has contributed to soaring commodity prices that have walloped U.S. consumers just when their spending is most needed to offset the housing slump. The commodity boom is the result in large part of the Fed's weak-dollar policy, and it may have tipped the U.S. into a recession that could have been avoided.”

“As Stanford's Ronald McKinnon noted on March 31 on these pages, the Fed's easing has also driven private capital away from the U.S. Money has flowed instead to those countries with rising currencies, such as China. To prevent the too-rapid revaluation of their currencies, these central banks are buying up dollars, which they then invest in safe U.S. Treasury’s. This explains the paradox of low U.S. Treasury rates even amid a weakening dollar.

Another thing that explains low US T-bill rates is that America’s exports are increasing quickly, as its current account deficit declines. The “paradox of thrift” this is not. http://en.wikipedia.org/wiki/Paradox_of_thrift

When you are the world’s reserve currency, the forces acting upon, and the momentum acting with the currency are unique. In a way, in its role as the reserve currency of choice, the USD dollar is the paradigm upon which all other currencies are built upon. As the star in a heliocentric currency solar system the fundamentals rules of financial gravity that may apply to all other currencies, may not always apply to the USD.

“In a double irony, China is now revaluing the yuan of its own accord to avoid importing inflation from the U.S. Other countries that have pegged their currencies to the greenback are now de-linking. The U.S. devaluationists are getting their way, but in the most painful way possible for the U.S. and world economy.”

Trader #1 – “So you work in International trade eh? What’s your poison?”

Trader #2 – “I export inflation”

Trader #1 – “Very cool, I hear that’s a growing market”…

Trader #2 – “Definitely, it’s an emerging one too”

http://online.wsj.com/article/SB120812890806011487.html?mod=djemEditorialPage