In think in general, UST bonds make a little more sense as an inflation/hyperinflation hedge (for non-USD investors). If we consider that gold has been 'running hot' over the past few decades and its only term return is more like 0.7% real (if that)
If I were to reduce the returns of gold in my database, then whatever benefits it brings (slighly better than 10y USTs, in terms of reducing vol in a portfolio, during the sample) would pale in comparisson to the reduction in returns that it would bring (0.7% real is a lot lower than 3.6% real, specially if you compound that for a life-time, in my database, gold is running at 4.27% real a year). So its an expensive hedge, if I were to add another bear market into the sample, then there would be volatility consquences as well.
But there could be some tax advantages to owning gold (you only pay when you sell, unlike bonds which might be taxed more frequently). Also, with US bonds, you take US hyperinflation risk, which doesnt happen with gold. So, overall, its hard to compare the two, its a case by case basis. At the end of the day, one is better off having both in the portfolio than to just going all out in one of them. Results will be more robust that way
If I were to reduce the returns of gold in my database, then whatever benefits it brings (slighly better than 10y USTs, in terms of reducing vol in a portfolio, during the sample) would pale in comparisson to the reduction in returns that it would bring (0.7% real is a lot lower than 3.6% real, specially if you compound that for a life-time, in my database, gold is running at 4.27% real a year). So its an expensive hedge, if I were to add another bear market into the sample, then there would be volatility consquences as well.
But there could be some tax advantages to owning gold (you only pay when you sell, unlike bonds which might be taxed more frequently). Also, with US bonds, you take US hyperinflation risk, which doesnt happen with gold. So, overall, its hard to compare the two, its a case by case basis. At the end of the day, one is better off having both in the portfolio than to just going all out in one of them. Results will be more robust that way