Quote from smilingsynic:
I can think of three reasons off the top of my head why averaging down is a bad idea, EVEN IF ONE USES STOPS:
1. Less exposure when the position goes in one's favor immediately.
Let's suppose one is expecting to average down at least four times, for a total of five pieces of a position. To have enough capital with which to average down, the initial position has to be smaller, like 1/5.
Those who do not average down but instead place all planned capital on the line at one time will be there to take advantage.
Iow, the largest level of exposure is during a period of loss, and the smallest, during a period of profit.
2. Missed opportunity to take advantage of the current trend.
Good traders take advantage of both downtrends and uptrends. By averaging down, one is going against the current trend and is myopically not taking advantage of it.
If one is buying at, say, 40, and then again at 38, and then at 36, one is missing the move down from 40 to 36. The pops up in a downtrend should be shorted. But one who is averaging down will be less likely to take advantage of the situation.
3. Excessive drawdown.
Being profitable is the obvious goal, but the key is to do so with as little risk as possible, and with as little drawdown.
Averaging down works well most of the time, but it is the 5% of the time it fails that does the most harm.
I agree with you in principle but you are discounting one paramount factor: the learning curve. To be able to trade the market the right way, takes a lot of learning and it may be years before one gets comfortable enough and good enough to make consistent profits. Averaging down is very simple and almost anybody can figure it out in a relatively short time. The same cannot be accomplished when learning to do it the "right" way. So your point #1 and #2 would not be valid since those who average down would not know how to trade any other way and would let those opportunities pass by, sine they were not trained to catch them in the first place.