What is the "random walk theory" and what does it mean for investors?
As this article says there are 2 camps.
The believers of the random walk theory who believe and where studys proof, that it is impossible to
predict the markets.
And the believers of the Technical analysis who say and with studys proof that true TA one can
predict the market.
As it says also academics can not conclusivly prove or agree with one or the other because there are studies that support both sides.
As I have been a technical analist for nearly 13 years now ( and sorry to say so myself--a good one) I can not say that one can predict the markets with a higher probability then 50% true TA.
I have seen as much support or resistances or H&S that indeed did what they predicted to do as they failed to do so also.
Fact is that some people very quickly confuse the market movements (for ex. cycles or by news or by greenspan that talks or bullish and bearish cycles or trends) with PREDICTING the market.
It is not because one market is moving in cycles like ( the grain and wheat and corn market that are related to the weather and this way to the seasons) that one can say that in GENERAL the markets can be predicted and this way are not random.
So I sujest that if we continue this discussion that we would agree on the terminology of the word "RANDOM".
Are the markets (in general) moving randomly?.... I would sujest that people would think about that question and make their posting based on: can the price action of the markets (in general) be
predicted?
That would prevent of making postings where people try to say that certain events influence the markets. That has nothing to do with randomness.
Bill gates knows that if he would anounce to sell all his stocks that HE KNOWS that the price is going to seriously drop. So he can predict that certain market movement. Does that mean that he can predict the markets in general ?...no.
As said, a croupier will spin the ball of a roulette tabel. He can spin that ball to the left side. He can spin that ball to the right side. He can be drunk and the ball slips continiously out of his fingers. He can spin the ball hard. He can spin the ball soft. That wil all lead to different outcomes. But that still makes that the outcome will be random. Or better that the outcome is NOT
predictable.
If technical analist proof with studys that they can indeed
predict the markets then the edge they will have will be a very small one.
So small that first you need to be in that elite group of technical analists and secondly the % edge will also be very small (the 2 combined that small that in my point of vieuw compared what they have to all the rest of the people don't have, can be neglected).
If 99.99% of the people can not predict the markets and only 0.1% can predit future price action, then I believe the random walk theory is the most acceptable one.
This topic is an intersting one but I have a feeling that it will end up in some sort of a discussion like does GOD exist yes or no ?...
Regards...iGoR