I thought a little bit about the current problems of the PP and came to think about the role of China. Its currency is bound to the US-Dollar and China had inflation rates of around 10% in the past years. Perhaps that would explain why Gold run up from 2000->2010 despite the fact that there was no inflation in the US. Just now where China`s economy struggles, gold falls. In this case it would probably be good to own China-bonds and China-stocks to supplement the US-PP. But that is not possible at the moment. In the EU we have similar problems with Switzerland and the question which bonds and stocks to own.
Is it possible that the merging of different currencies can cause movings in the returns of the PP? For example that the PP performed much better in some times (like 2000-2012) as in others?
We had from 1980 to now falling interest rates, so backtesting doesn`t really help determining future returns because there is not enough data from times where interest rates on bonds where low (like 1940-1960) and not being on gold standard. I did some tests on longtermresults.com for the phase of 1945-1970 which showed only 0.5-0.8% real returns for the PP. (But obviously gold was nearly fixed there.) while stocks returned around 6-7% real returns.
I came up with the idea of guessing future returns for the next decade and calculate the future return of the PP like graham would probably do it:
Real returns:
Stocks: 5-6%
Gold: 0%
Bonds: 0% (german bonds for me), 2,5% currently in germany which fits to inflation so zero real gain.
Cash: -2-0% (thats the hardest part, but obviously cash looses currently to inflation.)
Rebalancing: +1%
In a diversified depot the return of the whole depot is the geometric mean of all single parts. Rebalancing adds around 1% to the overall performance.
For the calculation i used the returns without inflation and assumed it to be 2%.
So ( 1,08*1,02*1,02*1)^-4 = 1,03. I added the rebalance bonus of 1% and came to 2% real returns for the coming decade.
And that is on the high side of the equotation. With stocks only returning 5% real returns, 0,5% rebalance bonus and cash loosing 2% to inflation this comes to 0,2% real return.
So the possible real return for the PP in the next decade should be around 0,2-2%. And this is the range if have seen for the PP in the years 1945-1970, so it seems not that far off.
Compared to the possible returns of stocks this looks really bad.
We have seen last month that the volatility in the PP can be high, too. So why don`t go just 100% stocks diversified above the whole planet?
The big crashes like 2008 or 1929 happen every 30 years so its not really imaginable that the next is just around the corner.
Maybe i am negativly biased from the last six month, but can someone see the flaw in my thoughts?
