Do moving average trading systems work?
Short answer - absolutely no way, as others have said, they are too laggy, can give too many
vague signals and in ranging markets they will give any money you make back to the market.
They can work better on daily charts, but then so does S&R + trendlines.
If however you use them in a non standard way in conjunction with other methods they can work:
Triple MA strats are slightly better than dual MA strats - not by much though.
They can give reasonable entries, but exits are usually very poor.
Different ways of using them could be:
1/ After 2/3 losses switch to S&R (or stick to S&R in the first place...)
2/ Take the MA entry and use a trendline break as exit or fixed target price
(again you may be better off just using trendline breaks in the first place...)
3/ Reverse the signal - when ma cross says short go long - with certain
severely laggy MA setups this can work surprisingly well in ranging markets,
which as Paz said, is the majority of the time.
4/ Can be a reason for trade within an automated strategy - again best used in a non standard way.
Basically in a nutshell - all indicators are absolute crap when used in the standard way they were intended to be used.
Used in a non standard way, indicators can have their uses - its up to you to experiment
TBH though, you would be far better off just using support and resistance and trendlines.
Thats unless you have a specific reason for wanting to use MA in an unusual way, as part of an alert / automation strategy.