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- 3 March 2006
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Realist said:Charting and the study of past stock prices can not be ignored because a large proportion of the market does it. Hence stock prices are affected by chartists. A self fulfilling prophecy.
The fact is though if there was a foolproof accurate scientific method for charting and making money then everyone would use it and everyone would make money. Of course that is impossible. So charting is not a science.
It is possible that some charting methodologies work, the problem is the more people that use that methodology the less it works because you are competing with more people to buy and sell at exactly the same time.
If you want to chart successfully you are best to invent your own method. Because the less people that use your method the better.
You see chartists affect stock prices, Companies usually do not change day to day, perceptions do. So when backtesting or trading in hindsight you are really just seeing what other chartists did, patterns occur because chartists make them occur!!
I'd suggest most trading methodologies work better in backtesting than when used on future trades because of this phenomenon.
I agree !
I don't use charts for much of my trading, I use maths and pattern matching
generated by my test suite to detect repeating patterns alot of the time the pattern detected is contrary to generally accepted trade setups