Quote from Ghost of Cutten:
No, this argument would be saying that the float in the insurance industry, like every other form of enhanced yield, comes at a cost in terms of risk. It is not free money. Insurance companies can and have gone bankrupt because they invested their float too aggressively, or miscalculated the profitability of the premiums they wrote.
Your argument is far more untenable - you are trying to say that you can get extra yield without any extra risk. But where is your evidence that the higher (but still pathetic) yield from the 1-3 year G7 basket (big change from Brazilian t-bills or 5-8 year bonds) is not simply an efficiently priced compensation for the extra risk you take by going out the yield curve and risking default?
There's also the risk of margin calls - if gold falls significantly, you will not be able to just sit on it, you will have to meet it by selling your 1-3 year treasuries at the market price, which may well be below what you paid for them.
Since a conservative portfolio will already have cash and fixed income, it is counter-productive to take on extra tail risk by margining gold futures and collateralising with a bond investment, instead of just owning it cash-paid (either physical, or through a fund). You'll already have 20-25% in bonds, another 20-25% in short-term notes, why risk disaster in a default scare just to grind out 0.5% more per year? And if you make it 'safer' by going down to 1-3 years, or even 3 months, your return falls commensurately and you *still* have 100% of the tail risk if there's a default, or if real rates stay negative. In most cases, every basis point in extra yield you reach for is ultimately 'paid' for in terms of extra risk.
The target goal of a conservative investor is to minimise the chance of a really bad outcome, whilst still getting good returns; not to maximise the total return in the majority of scenarios, at the risk of getting screwed in a minority of scenarios. The latter is inherently a speculative investment policy. Yet even if you want to speculate and take on extra risk to get another 0.5%-1% per annum, you are more likely to get it efficiently by increasing the risk in your risky assets i.e. stocks. For example, owning more stocks, or keeping the total stock portion the same but increasing the % allocated to small-cap or emerging/frontier market or deep value stocks. That will boost your risk-adjusted return more than by owning some more government bonds or t-bills, and the extra tail risk will be less (a 25% gold holding can only fall 25%. A 25% margined gold futures position plus a 25% bill/bonds portfolio can fall 50%).
So, if you want to increase total return in exchange for extra risk, then own a bit more in stocks, or own slightly more risky higher-return stocks. Don't go to a leveraged 125% total exposure so that you can have an extra 20-25% in 3rd world t-bills or long-term Treasuries, that's totally nuts.