Coyote Blog

My guess is that HFT will soon become one of those bogeyman words that people automatically associate with "bad stuff" without ever actually understanding what it means.  But it is worth understanding the underlying problem, and that problem is not high speed or frequency per se.

As I understand it, when an order to buy, say, 10,000 shares of Exxon gets placed, the purchase will get pieced together by searching across multiple servers where offers are listed and putting together the 10,000 shares in bits and pieces from these various servers.  What HFT's are doing (and I am sure this is grossly oversimplified) is that once it sees this order pinging  a server, it runs ahead at high speed to other servers and buys up blocks of Exxon at price A and then offers it up to the pokey buying search when it finally arrives at those servers at A+a bit more.  That "a bit more" may be less than a penny, but the pennies add up and if done right, there is almost no trading risk.

This is bad, though generally not for us small investors but for our mutual fund companies.  For my little trade of 100 shares that might be cleared on the first server, HFT's have no opportunity to play.  Moreover, I may not even notice a penny or two difference in the price I get.  This is a much bigger deal for mutual fund companies and large investors clearing larger trades, where a few pennies can add up to a lot of money.

An exchange always has to be really careful to maintain its image of fairness, and systematically allowing such behavior, called front-running, is not good for the health of the market.   Which is why you are hearing a lot about this.

Here is what you are not hearing, and I will admit that it is all a hypothesis of mine.  But it may well be possible that HFT's actually reduce the total cost of front-running to investors.  It may be that HFT's real crime is that what they are doing is more transparent and visible than what market makers were doing in the past -- ie they are not increasing the volume of front-running, they are just making it more obvious.   I would not be at all surprised if such front-running always existed in market-making (certainly Goldman Sachs has been accused of it) and that HFT's are actually the Wal-Mart or Amazon of front-running -- not doing anything new but doing it cheaper on tighter margins.   Kind of ironically, I suppose this is what efficient markets theory would predict for the market in front-running.

If this is the case, while we would rather see front-running eliminated entirely, HFT's may actually be reducing the cost of front-running and making things more rather than less efficient.

I am always fascinated by folks who fear private power but support continuing increases in public / government power.  For me there is no contest - public power is far more threatening.  This is not because I necesarily trust private corporations like Goldman Sachs or Exxon or Google more than I do public officials.  Its because I have much more avenues of redress to escape the clutches of private companies and/or to enforce accountability on them.  I trust the incentives faced by private actors and the accountability mechanisms in the marketplace far more than I trust those that apply to government.

Here is a good example.  First, Kevin Drum laments the end of privacy because Google has proposed a more intrusive privacy policy.  I am not particularly happy about the changes, but at the end of the day, I am comforted by two things.  One:  I can stop using Google services.  Sure, I use them a lot now, but I don't have to.  After all, I used to be a customer or user of AOL, Compuserve, the Source, Earthlink, and Netscape and managed to move on from those guys.  Second:  At the end of the day, the worst they are tying to do to me is sell me stuff.  You mean, instead of being bombarded by irrelevant ads I will be bombarded by slightly more relevant ads?  Short of attempts of outright fraud like identity theft, the legal uses of this data are limited.

Kevin Drum, who consistently has more faith in the state than in private actors, actually gets at the real problem in passing (my emphasis added)

And yet…I'm just not there yet. It's bad enough that Google can build up a massive and—if we're honest, slightly scary—profile of my activities, but it will be a lot worse when Google and Facebook and Procter & Gamble all get together to merge these profiles into a single uber-database and then sell it off for a fee to anyone with a product to hawk. Or any government agency that thinks this kind of information might be pretty handy.

The last part is key.  Because the worst P&G will do is try to sell you some Charmin.  The government, however, can throw you and jail and take all your property.  Time and again I see people complaining about private power, but at its core their argument really depends on the power of the state to inspire fear.  Michael Moore criticizes private enterprise in Capitalism:  A Love Story, but most of his vignettes actually boil down to private individuals manipulating state power.  In true free market capitalism, his negative examples couldn't occur.  Crony capitalism isn't a problem of private enterprise, its a problem of the increasingly powerful state.  Ditto with Google:  Sure I don't like having my data get sold to marketers, and at some point I may leave Google over it.  But the point is that I can leave Google .... try leaving your government-enforced monopoly utility provider.  Or go find an alternative to the DMV.

A great example of this contrast comes to us from Hawaii:

There may be some trouble brewing in paradise, thanks to a seemingly draconian law currently under consideration in Hawaii's state legislature. If passed, H.B. 2288 would require all ISPs within the state to track and store information on their customers, including details on every website they visit, as well as their own names and addresses. The measure, introduced on Friday, also calls for this information to be recorded on each customer's digital file and stored for a full two years. Perhaps most troubling is the fact that the bill includes virtually no restrictions on how ISPs can use (read: "sell") this information, nor does it specify whether law enforcement authorities would need a court order to obtain a user's dossier from an ISP. And, because it applies to any firm that "provides access to the Internet," the law could conceivably be expanded to include not just service providers, but internet cafes, hotels or other businesses.

Americans fed up with Google's nosiness can simply switch email providers.  But if they live in Hawaii, they will have no escape from the government's intrusiveness.

For a while now, a few authors have been quipping at Zero Hedge that the best investment strategy is to do the opposite of what Goldman Sachs is telling is retail customers.  The theory is that if Goldman tells the public to buy, it means that they are selling like crazy for their own account.

This seemed a bit cynical, but on Friday Zero Hedge observed that Goldman was telling its retail customers to buy European banks.  This advice seemed so crazy -- the European agreement last weekly explicitly did not contain anything to help banks in the near term with over-leveraged bets on shaky sovereign debt -- that for the fun of it I played along.  I shorted a couple hundred shares of EUFN, a US traded fund of European financial firms (took a bit of work to find the shares to borrow).

Made 6% in one day.  Thanks Goldman.

I am confused by the recent argument for more financial regulation.  The argument seems to go that because Goldman Sachs may have committed fraud, then we need more laws making more things illegal.  But Goldman Sachs is accused of breaking existing laws.  Isn't that just an argument to enforce the laws we already have?  In fact, the government so far is stopping short of its full power to go after Goldman over the Abacus securities -- its seems like they would have a criminal fraud case but at the moment they are settling for a civil action.  In a sense, the government is not using against Goldman all the power it already has.

Of course, a cynical person could argue that the government has no real desire to go after Goldman, who after all is pretty deeply in bed with this Administration, and is pulling its punches in a show trial that will end up with Goldman fined .01% of its quarterly profit but with the Administration looking tough to fuzzy-headed voters and with Congress having something it can wave around to distract people while it passes another 1400 page bill no one has read.

Apparently, there are some dangers with getting too confident about your computer modeling of complex systems:

Computers don't always work.

That was the lesson so far this month for many so-called quant hedge
funds, whose trading is dictated by complex computer programs.

The markets' volatility of the past few weeks has taken a toll on
many widely known funds for sophisticated investors, notably a
once-highflying hedge fund at Wall Street's Goldman Sachs Group Inc.

Global Alpha, Goldman's widely known internal hedge fund, is now
down about 16% for the year after a choppy July, when its performance
fell about 8%, according to people briefed on the matter.

This kind of reminds me of another kind of computer modeling of complex systems.