Stockopedia Poster4 Jan 2022 16:54
Loved this post from a Stockbroker of 40 years, now retired,on Stockopedia:-
Well the main objective is to stay IN the aggressive growth situation for as long as possible and not be bucked off by savage short term spikes, so the mechanical sale signal is really basic and really slow, so as to be rarely triggered on a long term upward-trending growth stock - a sort of fail-safe measure of last resort.
It is simply when the 40 day moving average crosses through the 100 day moving average - BUT with the proviso that the signal is NOT acted upon if by then the share price has already started to recover and is standing above the lowest point reached in this current downtrend. The signal is only acted upon in these cases when the share price flops over again and touches a new low.
I would say that the signal is ignored about 70% of the time for that reason and successfully keeps you in the long term upward trending minnow which is hopefully en route to turning into a Microsoft. And it is not triggered by short term downward spikes, no matter how savage. When it does properly trigger I almost never want to follow the signal, because by then I have become so attached to this situation which, by then, has perhaps already given me a 3 to 5-fold gain, and is still a minnow, and I am convinced it is going to go on to be a 10 bagger at least….but I stick to my guns and do it. Again, about 70% of the time it’s proved to be the right thing.
Boohoo, for example, triggered the 40/100 MA on the downside on a number of occasions over the past year, but only gave a confirmed sell signal for me around 7/5/2021 when the 40/100 was breached and the share price was still hitting new 3 month lows. The share price was 310p when I reluctantly sold.
If I remain convinced of the company’s long term merits I will then place it on a ‘watch to rebuy’ list. For that I will use a much faster trigger - normally when the 10 day moving average pushes up above the 40 day. Also, because 10/40 is still a lagging indicator, I will only think of acting on it if the share price is now clearly trending up at the point of the signal, and has not already flopped over - a sort of reversal of the 40/100 sell signal proviso.
Although very tempting at 120p, Boohoo hasn't triggered a repurchase for me yet on this basis, and I have to stick to my self-disciplines! After all, I was equally tempted at 210p!
Needless to say, none of these things are perfect, and one almost never gets out at the top or back in at the bottom. I just keep loping after the share price like a pack of Cape Hunting Dogs!