greghaught wrote:
> Here is a calm explanation of high frequency trading from Advanced
> Trading magazine. the article confirms and further explains
> something that i said in a previous post to the effect that due to
> the scale on which these machines trade, they render themselves
> ineffective even as they change.
>
http://advancedtrading.com/algorithms/showArticle.jhtml?articleID=218401501
> high frequency trading is just high speed market making and that's
> liquidity. they do try to profit, but that profit is not a
> foregone conclusion and the effort is extremely expensive in terms
> of hardware, software, energy, and operating costs.
> once again, the truth hardly measures up to the hype.
Thanks for referencing that article. It's very interesting, but
there are several points to be made.
First off, putting on my computer consulting and systems programming
hat, I knew from the moment I read the first story about the Goldman
Sachs robbery that most of it was crap. There is no way that
stealing some source code for such a large complex system is going to
be useful in any way to someone else.
You could see this in news stories of mergers for last few decades.
Two banks or two other companies would merge, through a takeover or
whatever, and they'd try to merge their computer systems, and it
would take years.
I wrote something along these lines in one of the articles I posted
last year:
> At a system level, managers constantly overlook integration
> issues. For example, in a telemarketing application being
> developed by Fidelity in the 1990s, the plan called for five
> components, each developed by a different programmer over three
> months. At the end of that time, the five components would be put
> together into a complete system. The problem was that the
> interfaces were poorly designed and the integration issues were
> poorly planned, and the entire project crashed and burned.
> Integration problems are the most common reason why cookbook
> programming fails, in my experience. Managers think that you can
> have one person broil the steak, another person make the
> vegetables, and a third person make the potatoes, and put them on
> the table and have a meal. Well you can do that in a restaurant,
> but not in an IT project.
** Boomers and Gen-Xers: Dumbing down IT
** http://www.generationaldynamics.com/cgi ... java080701
Integration is always the heart of the problem, and it's something
that almost everyone overlooks. As the article you referenced points
out, making use of the stolen Goldman Sachs source code would require
a huge integration project, and by the time it was done, the "secret"
algorithms would be obsolete anyway.
In fact, the only really valuable part of the "robbery" would be
Sergey Aleynikov himself, assuming that he fully understands the
Goldman Sachs system that he's been working on. He could bring his
knowledge of Goldman's systems and tell them how to implement
Goldman's algorithms in another system. Of course that would raise
various trade secret issues, but those are a lot harder to prove than
robbery.
However, if there's been a lot of "hype" about this story, then
Goldman only have themselves to blame. Here's a paragraph from the
original story:
> “The bank has raised the possibility that there is a danger that
> somebody who knew how to use this program could use it to
> manipulate markets in unfair ways,” Facciponti said, according to
> a recording of the hearing made public yesterday. “The copy in
> Germany is still out there, and we at this time do not know who
> else has access to it.”
http://www.bloomberg.com/apps/news?pid=20601103&sid=axYw_ykTBokE
Well, what the hell does that mean??
If Goldman has written source code that, when executing, is capable
of manipulating the market in unfair ways, that can mean only one
thing: That Goldman's system has the capability to manipulate the
market in unfair ways.
And since they went to the trouble to implement that capability, it
follows with near certainty that Goldman HAS manipulated the market
in unfair ways.
And so the "hype" is really the fault of Goldman itself.
But I've never even mentioned those two issues. My concern has been
about something else, which is also mentioned in the article that you
referenced:
> [H]igh frequency trading firms, which represent approximately 2%
> of the 20,000 or so trading firms operating in the US markets
> today, account for 73% of all US equity trading volume.
That's the problem, for reasons that I've stated several times
before.
Sincerely,
John