Quote from ivob:
Of course TA works. Because of human nature.
For instance support and resistance.
Imagine:
stage 1: at 10 many people buy a stock after having been in a trading range between 9 and 10.
stage 2: stock goes up to 12
stage 3: stock goes down to 10.
Many people who saw the stock going up from 10 to 12 will buy because they missed the rally before. Very simple. There are usually buyers right above 10.
If for whatever reason stock goes to let's say 9.50, People who previously bought around 10 will sell because they see the position turned against them and do not want to take a loss. Usually stock will go down more. (so because of underlying conditions -something happened- and because of the people who were wrong before and have to correct this)
However, nowadays people make TA more complex then it is. For me it just means certain pricelevels are important because I think there are many buyers or sellers at those levels. At those levels you can draw lines, support and resistance.
Just the fact that a stock that has been going up for a while is usually going up more proves that TA works.
just my 2 cents
regards,
Ivo