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Strategies & Market Trends : Booms, Busts, and Recoveries -- Ignore unavailable to you. Want to Upgrade?


To: TobagoJack who wrote (3699)6/3/2001 9:30:34 AM
From: TobagoJack  Read Replies (4) | Respond to of 74559
 
Hi Jay, found the double secret explanation not obvious before, to the believers who invest in technology without having ever stepped into a technology lab, with all the complicated boxes hooked together. You mentioned the complications in the post this is responding to...

Message 15813707

I remember one time at school, you were not listening to the professor talking at during the power electrical lab ... until you vaguely heard him tell the rest of the lab what not to do "...do not hold plugs A and B in your hands, because, even when not powered, the residual energy stored in the coil can seriously kill you ...".

Remember how you got his attention ("eh? professor, what do I do now?"), with plug A in one hand and B in another, about arms length away from death, literally.

Now we have folks playing the markets, without understanding the true nature of the markets and money, maybe months away from financial death.

You do not understand the markets either, but you do understand fear, not the paralyzing sort, but the gene pool enhancing sort (you check in with darwinawards.com often enough).

I also remember the time you used a mixing stick to stir the mystery powdery content of the chemistry lab, aiming eventually to identify the composition, over aperiod of weeks of analysis. You screamed as the super heated glass beaker bottom seemed to be burning through. The class stared at you, and the teacher showed obvious alarm. Then the true explanation was evident. Instead of a metal mixer, you used a plastic one.

Never did successfully identify the powder, given all the little plastic beads mixed in.

So many explanations possible for any one observation. Better to triangulate.

economist.com

QUOTE
Patterns in financial markets

Predicting the unpredictable
May 31st 2001
From The Economist print edition

Some physicists think they can see into the future of markets





STOCKMARKET crashes can be like buses: you wait ages for one to come along, then three arrive at once. That has not stopped people from trying to understand why they happen, of course. But such understanding is handicapped by two things. The first is that markets are complex systems that are hard to analyse. The second is a widespread assumption that, over three centuries of stockmarket trading as we know it, any patterns that do predict the future will already have been identified and “arbitraged” out of existence by people taking advantage of them.

David Lamper and his colleagues at Oxford University disagree. As physicists and mathematicians, they frequently find themselves dealing with complex natural systems, and in a paper submitted to Physical Review Letters, they apply that experience to the artificial world of market mechanisms. They suggest that price patterns do exist that have not been arbitraged out. These patterns are created by the collective actions of market traders themselves—and could be used to predict sudden falls in a market.

Dr Lamper’s work starts from the observation that extreme price movements in financial markets happen far more often than would be expected by chance. Presumably, therefore, there is some reason behind them. To explore what that might be, he and his colleagues built a computer model which attempts to emulate market behaviour by running a large number of software “agents” at the same time. These agents “trade” with each other according to certain strategies. (Similar trading strategies are used in the real world to carry out automatic share-dealing.)

Each agent has the same information about the past, and is fed new price data at regular intervals. But, rather like human traders, agents differ from one another in how they interpret this information. Some, for example, will look at a past pattern of rising prices, and assume that the market will continue to skyrocket. Such bulls will want to buy. Other agents will consider a rising market to present a good opportunity to sell. Still others will want to buy in a falling market that has been rising until recently. And so on.

The resulting computer-based market produces price features that are statistically similar to those of a real one, which suggests that the team’s assumptions about how traders work are accurate. Unlike a real market, though, a computer market can be run backwards—that is, it can be fed a set of market data and told to work out what trading strategies are likely to have produced them. If the strategies employed before a sudden downturn are analysed, the result is intriguing: the agents have generally come to agree with one another about the best way to trade.

Although standard financial-market theory assumes that it is impossible to tell anything about the future direction of a market by looking at what has happened in the past—so that markets follow a “random walk”—most investors are seeking to do just that. When both real market data and random simulations of such data are put before traders, they claim to see patterns. This is no surprise. People see patterns, where there are none, all the time—in clouds, in lotteries, in mountains on the surface of Mars, and even in root vegetables. Predicting a number in a lottery based on such a spurious pattern cannot, of course, have any effect on whether that number is actually drawn. But the same is not necessarily true of the stockmarket. When many traders think they see the same pattern, they may respond in the same way. They may thus, collectively, create a real pattern.

Lemmings over the cliff
And not only real, but unstable. For, paradoxically, the more orderly a market appears, the less stable it is. (Think of dominoes up-ended on a table. If they are distributed at random, knocking one over causes little damage. If they are in a line, the whole lot will come down.)

It is the changes in strategy that lead to this orderly instability which the researchers say they can detect. When their system finds many traders crowding into one type of strategy, they know that a large downward change may be imminent. The super-strategy to beat this is obviously to sell first or even, for the brave, to go short.

So much for theory. The question is: are the researchers rich yet? Well, no. But the Oxford model has been tested against the real world, and it looks as though it may work surprisingly well.

The first test was against minute-by-minute historical data from a foreign-exchange market: a London bank’s dollar-yen market between 1990 and 1999. The model detected enough selling and buying opportunities during this nine-year period to yield a 380% profit.

Having tried out the principle in the relative simplicity of a currency market, Dr Lamper is now taking on Nasdaq, the tech-heavy stockmarket whose tumble in April 2000 signalled the end of the dotcom boom. Running Nasdaq data through the Oxford model suggests that there was, indeed, a period of increased predictability in the six months before April 2000, compared with the months before that.

None of which means that the model will work for the future, any more than many previous such efforts. Being canny, the researchers are anyway keeping details of the algorithm they use to generate their results under wraps until the patent they have applied for is locked up. Nor are they too worried if the details of their super-strategy leak out, since they think they could detect its use in the market. That would allow them to play a “super-super-strategy” that made use of the knowledge. On that, they are keeping super-quiet.

UNQUOTE



To: TobagoJack who wrote (3699)6/3/2001 10:03:06 AM
From: TobagoJack  Read Replies (2) | Respond to of 74559
 
Hi Jay, insurance buying we know, like insuring a house against fire accident, LA against earthquakes, Florida against Typhoon, Taiwan against invasion, and now perhaps less sensibly, insuring against the big financial market players against big financial loss ... (no, not picking on the Maestro again, too easy)

economist.com

QUOTE
Hedge funds

Swing, swing together
May 31st 2001 | NEW YORK
From The Economist print edition

Investment banks risk getting burned by hedge funds. Again





INVESTING in hedge funds is hot again, but this time with a difference: many investors are buying insurance against losing money. A curious concept, you might think, for such a risky game. Yet investment banks are selling capital protection, for a price. Some financiers fear that the risks their rivals are taking in offering such protection will be unhedgeable in times of market distress. That, after all, is why portfolio insurance failed in October 1987, accelerating the markets’ free-fall.

Net inflows to hedge funds totalled nearly $7 billion in the first quarter of this year, bouncing back to levels last seen before the crash of Long-Term Capital Management (LTCM) in September 1998. Most of that flow has been into equity or equity-linked funds, where the capital-protection racket is most rife.

The top Wall Street firms, such as Morgan Stanley and J.P. Morgan Chase, say they are alive to the danger, and rather disparage their second-tier rivals, among them French and German banks and insurance-company subsidiaries, for winning hedge-fund business by taking on greater risks. They would say this, wouldn’t they—and these firms had to put $3.6 billion into LTCM after it was hit so hard in the Russian crisis of August 1998. It seems, whatever they say, that they are all in the game to some extent, and getting in deeper. In a market downturn, their hedge-fund positions could hurt them and amplify panic.

The majority of hedge funds are not like LTCM. They take small, well-managed bets on debt or equity trends, or on anomalies in market pricing. They do not borrow too much. And they can produce returns well above those available in share and bond indices (although they charge high fees and keep a big chunk of the profits). One reason for this is that they are not forced to run with the herd.

Which does not, however, stop the herd from running with the hedge funds. Since the LTCM debacle, the financing of hedge funds has become a far tighter game. Banks will not allow them to borrow more than three to seven times their capital, if at all. By comparison, commercial banks borrow as much as 12 times their capital, and investment banks often leverage as much as 30 times. LTCM was leveraged more than 100 times.

The banks have been reducing their own credit exposures to hedge funds by bringing in outside investors. But most investors are cautious, particularly insurance companies and pension funds. Their statutes often will not let them invest in entities of low credit standing.

So banks and investment houses have been offering notes linked to hedge-fund performance, with a guarantee that at maturity they will get back at least the capital they started with. “Principal protected notes” have become big business, and thanks to them, several billions of dollars of fresh money each month are being poured into these small—or now not so small—hedge funds. Société Générale, a French bank, says it has issued more than $3 billion of such notes, in private or public form. The fashion for pension funds or insurance companies to invest a small proportion of their portfolios in hedge funds will, if it continues, provide a wall of money. That would not in itself be a problem for the hedge funds. But it would be a problem for the banks that have offered money-back guarantees.

How can a bank afford to offer such guarantees? The simplest way is to reinsure the risk with an insurance company. Several will oblige, including Swiss Re and Zurich Re. A more complex way is to invest a proportion of the capital in something safe, such as zero-coupon Treasury bonds, so that at the target date it yields most or all of the principal sum. The rest of the capital is invested in the hedge fund or funds, on a leveraged basis or in positions which mirror what the hedge fund is doing. If the hedge fund starts achieving spectacular returns, either positive or negative, the bank must adjust its “delta” position quickly in order to track the profit or avoid the loss.

In many agreements with hedge funds, banks can take the investment out of the fund when there is severe underperformance. But—here is the catch—hedge funds are not very liquid investments. At best they allow disinvestment once a month. Some require an investment “lock-up” for a year or more. If the bank can see all the positions in a hedge fund’s portfolio, it can guard against a downturn more quickly. But there is a potential conflict of interest if it is acting as the fund’s prime broker as well. Morgan Stanley, an investment bank, says it will not act as prime broker for a fund which it is tracking in this way. Other banks are apparently not so squeamish. Such a conflict of interest could become acute in periods of market turbulence.

Delta-hedging is a game which requires not just vigilance, but also liquid markets. In a sense, the banks have substituted the credit risk of financing hedge funds with the market risk of their underlying investments, which they believe they are better at quantifying and hedging. Many of them skip the investment in zero-coupon bonds, believing they are agile enough to create “virtual” zero-coupon structures.

But, as is often the case, the risks are getting higher and the returns lower as more firms join the fray. Moreover, with the decline in interest rates, the zero-coupon structure demands a higher proportion of the capital to protect the investment, leaving less to invest in the hedge fund itself.

Two things are likely to happen, says a risk manager close to the business. First, investors will begin to see that investing in a diversity of hedge funds, without principal protection, will provide nearly as stable returns. (Principal protection is bought at the expense of some of the hedge funds’ profits.) Second, the hedge-fund industry will become mainstream—not, as it is now, an “alternative investment strategy”. Hedge funds’ performance will then become more correlated with the rest of the market (and so perhaps will their fees).

That assumes, however, that there is no spectacular blow-up as in 1998. “People have programmed 1998 into their models: 1998 can’t happen again,” says a risk strategist at a big Wall Street firm. But with their eyes on the rear window, today’s risk managers are quite likely to miss the next big event until it hits them. Could delta-hedging of hedge-fund portfolios be it? As long as the business is hot, few on Wall Street or in the City, or those who watch over them for that matter, seem worried.
UNQUOTE