GeoffF100 wrote:The British market is irrelevant here. It is only about 4.1% of the global market. You will not get much diversification there. If you hold international shares directly, you face high exchange rate costs. You also have the problem of reclaiming withholding tax in umpteen languages. Your diversification will still be poor unless you hold thousands of shares. Interactive Brokers is relatively cheap, but they do not do ISAs or SIPPs. Anyway, what is the point? if the professionals cannot beat the market, except by chance, what chance do you have?
The UK market may be small but the point remains that if you are investing only in that market then, for the reasons outlined in my previous post, an equal weight on purchase long term buy and hold strategy should beat the relevant index (FTSE all share)
Yes, ideally for maximum diversification an investor would be advised to buy shares internationally. And, yes, there are problems with such an approach. One middle ground is to buy a range of different country, or regional, trackers in equal amounts rather than a global tracker. I did try a bit of back-testing of this approach and found significant outperformance vs the Global tracker for the period covered by Dimson's book 'Triumph of the optimists' from which I took the data.
As regards professionals not beating the market, part of that is down to higher charges and part down to it being very difficult for most of them to adopt the kind of LTBH approach that PI's can use. It would be interesting to see the approach taken by wealth managers offering bespoke services. I don't have much data there.
BoE