Instead , longevity risk is used as a diversifier by investors looking for sources of risk uncorrelated with their current portfolios .

相反，寿命风险被投资者当作一种多样化投资，他们寻求与自己目前投资组合无关的风险源。

In fact , due to the zero correlation , commodities are a worthwhile diversifier under a variety of assumptions with respect to their expected return .

实际上，由于大宗商品走势与股票和债券的零相关，因此在涉及预期回报的很多假设情况下，大宗商品都是一种有价值的多元化品种。

Hsbc also notes that there are " compelling economic arguments " for many central banks to increase gold reserves as the financial crisis has elevated bullion 's importance as a portfolio risk diversifier .

汇丰还指出，由於金融危机提升了黄金在分散投资组合风险方面的重要性，许多国家央行有了“更有力的经济理由”，以增加黄金储备。