[lbo-talk] housing bubble overcorrection

boddi satva lbo.boddi at gmail.com
Sun Nov 26 14:59:50 PST 2006


"Reversion to the mean" is nonsense in and of itself. What's being described is that, over time, a "random walk" will have "walked" as far in one direction as in another. But with a bubble, we're not talking about a random process, but a process that has a pattern and according to one theory, a statistical "rhythm" that oscillates faster and faster.

The theory suggests that all bubbles betray the mathematical signature of this oscillation. At some point, the self-reinforcing behavior comes to a relatively predictable point of "criticality" after which the (statistically) rhythmic pattern of behavior reverses and the trend goes from up to down, thus an "anti-bubble" comes into existence. The anti-bubble can go down more or less sharply than the bubble. It all depends on what influences the system at the time of the "change of regime" from bubble to anti-bubble - that point of criticality.

Also, it's very important (according to this theory) what happens as the "rhythm" slows and the anti-bubble gets older. At that point, the anti-bubble becomes more fragile and can continue down, resolve into a random walk, or even turn into another bubble. The key is whether the self-reinforcing behavior of the anti-bubble persists.

boddi

On 11/22/06, Keith Nybakke <knybakke at mac.com> wrote:
> "All manias end with a reverting past the mean - falling to levels
> seen before the bubble started."
>
> I ran across this statement while looking at several housing bubble
> blogs. It was repeated, in some form or another, several times.
>
> Is it a valid truism?
>
> Sure, tulip bulbs returned to their pre-bubble price. Dot-com stocks,
> too, I think. But, what about US housing?
>
> Judging by news reports and the bubble-bloggers in some overheated
> markets, such as Sacramento for example, it looks like prices are in
> free-fall. It's easy to find stories about people losing 5 to 6
> thousand dollars a month on a speculative house purchase. That's if
> they succeed in selling it at a deep discount from the purchase price.
>
> There are stories cropping up about newly constructed "ghost towns"
> that have only 10 - 20 percent occupancy in new developments. Many of
> the empty houses are owned by speculators who are trying to figure
> out an exit. The rest were built by the developer in hopes of finding
> more speculators to buy them. Below market rent is thought to be the
> next step for these ghost towns, filling the empty houses with people
> who might not even own a lawn mower.
>
> Here in Minneapolis, a few condominium projects are changing over to
> office space or are "on hold" -- a euphemism for "the pre-sold money
> dried up". There is still some construction in the exurbs and many
> late-stage condominium projects are going to be completed. Locally,
> housing starts were reported down by 49 percent in September. This
> was labeled Great News! by local realtors, thinking that an inventory
> reduction can somehow help to maintain sales momentum.
>
> The bursting of this bubble is going to damage a lot of peoples'
> finances. What's the larger outcome? Will the pain be limited mostly
> to the amateur real estate speculators and the small number of firms
> that serviced their greed? If that's the case, we'll see a ton of ink
> devoted to their pain, but the economy will continue to stumble along
> without a huge disruption.
>
> If you look at the real estate web pages, it seems they are either in
> deep denial or maybe they really can see a wonderful recovery just
> over the horizon. If you look at the bubble-bloggers, it's 100
> percent gloom and doom -- sometimes a little gleeful in their
> criticism of realtors. MSM just seems to look for human interest
> stories, both cautionary tales and stories of survival, with a little
> hard-edge reporting starting to appear.
>
> I am reminded of the days when I watched Maniac Cramer pushing stocks
> on the CNBC morning show and then I went to the fuckedcompany.com
> website to see which companies were tanking. This housing market has
> a similar feel to it.
>
> Keith
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