Emile Servan-Schreiber wrote:
> For your viewing pleasure, NewsFutures invents the "prediction market
> movie": a new way to look back at recent history, or just relive the
> excitement of past trading. For instance, the link below takes you to
> our fist production: a review of the epic trading battle between Clinton
> and Obama from March 2007 to March 2008 (after Texas and Ohio, it was
> over for HIllary).
>
> *http://us.newsfutures.com/hcboWidgetCode.html*
>
> Enjoy!
>
> --Emile
> NewsFutures <http://www.newsfutures.com>
>
> >
Dr. Robert P. Holley
Professor, Library & Information Science Program
Wayne State University
Detroit, MI 48202
313-577-4021 (phone)
313-577-7563 (fax)
aa3...@wayne.edu (email)
I believe the best forecast indicator would be derived from out of the money
put options on the DJ index. I'm not sure what they were trading at however
I believe the volatility measure was trending down prior to the turmoil.
I've still to read Taleb's recent book but I think the recent turmoil would
come under his definition of a black swan.
Nigel
----- Original Message -----From: Tom D'Eletto
Absolutely and of course, there were markets that predicted the
increasing likelihood of the events of last week.
We all read the news and know that both (the now infamous) short sellers
in the stock market and those trading Credit Default Swaps on the
banking sector predicted an increasing probability that the "events" of
last week would happen.
However, given that there are no meaningful real money prediction
markets, it's a completely self absorbed question to ask, "did any
prediction markets predict the stock market meltdown?"
Mapping the real money market activity back to a "prediction money
binary contract" on, for example, "will Lehman enter bankruptcy in the
next X days" may (or may not) be an arbitrage linked proposition.
So, any prediction market that WAS NOT "predicting" an increasing
probability of the meltdown was, by arbitrage, a completely disconnected
and uninformed market.
The website, electoral-vote.com made an obvious but noteworthy
observation today with regard to Intrade's political markets:
"In general, the betting sites are lagging indicators with respect to
the polls. When new polls come in, the bettors see that and adjust their
bets accordingly. It doesn't work the other way (people responding to
pollsters don't do so on the basis of what they saw on Intrade)."
http://www.electoral-vote.com/evp2008/Pres/Maps/Sep23.html
When I read some of the comments and questions on this googlegroup, it
seems some folks are hoping to demonstrate that prediction markets are
the dog somehow able to lead "event tails".
Personally, I think prediction markets are the tail that follows the
event dog wherever it's going. And that's probably the way it should be.
Rj
Rj