They all hold some bullion but little compared to the huge reserves of several national central banks, which have vaulted hundreds of tons of gold at the NY Federal Reserve Bank, which this topic is all about. Over recent years, many countries have shifted all, or part of their gold reserves home, or closer to home. Much of this was done quietly was not widely reported. Germany is already well along with the process. The link explains and shows these repatriations: https://www.investing.com/analysis/why-central-banks-are-bringing-gold-home-again-200678403