Utilize your financial knowledge, give your answer or opinion to the input question or subject . Answer format is not limited.

Is there a general guideline for what percentage of a portfolio should be in gold?
My personal gold/metals target is 5.0% of my retirement portfolio. Right now I'm underweight because of the run up in gold/metals prices. (I haven't been selling, but as I add to retirement accounts, I haven't been buying gold so it is going below the 5% mark.) I arrived at this number after reading a lot of different sample portfolio allocations, and some books. Some people recommend what I consider crazy allocations: 25-50% in gold. From what I could figure out in terms of modern portfolio theory, holding some metal reduces your overall risk because it generally has a low correlation to equity markets. The problem with gold is that it is a lousy investment. It doesn't produce any income, and only has costs (storage, insurance, commissions to buy/sell, management of ETF if that's what you're using, etc). The only thing going for it is that it can be a hedge during tough times. In this case, when you rebalance, your gold will be high, you'll sell it, and buy the stocks that are down. (In theory -- assuming you stick to disciplined rebalancing.) So for me, 5% seemed to be enough to shave off a little overall risk without wasting too much expense on a hedge. (I don't go over this, and like I said, now I'm underweighted.)