Saturday, November 15, 2008

The Casino

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Interesting statistics pulled from Dshort.com

Essentially the casino we now live in has had 14 of the 64 days where intraday volatility is 8%+ ... going back to 1928. So out of 80 years, over 20% of the most volatile days have come in the past 6 weeks.

To me, it just says program trading (computers) have taken over - humans don't move like this on a normal basis. It is an illiquid market where even hedge funds who use humans have largely moved to high cash and those that remain in move the markets - remember hedge funds are only about 2% of assets but (varied) surveys say control anywhere from 35-65% of each day's trades. HAL9000 pretty much has this market to himself.

He has a chart of each of the 64 days available on the site if you are into statistics.

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Volatility is a measure of instability, and bear markets are inherently unstable. For proof, let's look at the intraday volatility (the swing between daily high and low) in the Dow since 1928. Over this 80-year period, the average volatility is about 1.8%. There have been only 64 days when the intraday volatility exceeded 8%. That's right — 64 days out of over 20,300 market days.

Fourteen of them have occurred since September 29th.

The Crash of 1929 had only eight.
Another thirty followed during the ten-year Great Depression.
Four were clustered around the Crash of 1987. Only two happened during the nasty 2000-2002 bear.

5 comments:

postpone.judgement said...

Mark,

this goes deeper than HAL - I can't post a link because it's not public data but I've seen several studies showing that trending strategies worked well from the forties until 2000. But not during the 30ies and not since 2000 and it has gotten worse in the last two years. Computers and speed of execution might have made things worse but the environment has changed. We all have to adjust to choppy markets until the mess is over.

Value strategies will work again when the market can has a better understanding of fundamentals. Right now you cannot be sure of anything - besides a huge contraction which will decimate all companies and countries with high fixed investment cost and external financing needs.

rosesryellow2 said...

TM,

Hey... I realized that I never commented on your ETF trading meltdown. That does really suck big time.

Let us know if they give you any response to this event. This market is hard enough for everyone even when the performance is fully reflective of the traders/investors' trading acumen.

jegan said...

I like the title of this article ... Living near Reno, I have to pass on this secret.. "The House always wins!"

You're right about the program trading .. There really is no other explanation for the last hour movement.

jegan

seadog said...

Salman Rushdie, the author of Satanic Verses, in a later book, which I am unable to recall it's title had a line that went something like this....
I paraphrase..."all the world became a giant casino, and everyone believed they would be winners". Prescient words !

NW said...

One way to benefit from high volatility is by selling options. I've been writing calls on my positions for the last couple of months and keeping the premium as a nice little dividend. They almost always end out of the money. Also to build new positions I would sell naked puts (if your broker allows that of course). Just a couple of ideas to earn some cash for your long term positions that I'm sure everyone here knows

Wonder if mutual funds are allowed to trade options?

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