这是好事，因为它可以减轻高负债水平造成的巨大回报波动。
That's a good thing, since it should smooth the big swings in returns caused by high levels of debt.
一些银行开始销售尾风险产品，德意志银行创造了Elvis指标，能够根据股市增长的波动性产生回报。
Some banks have started to sell tail-risk products. Deutsche Bank has created the ELVIS index, which generates returns when stockmarket volatility increases.
自基金成立以来的年化回报率为17.9%，而波动率仅为股市的一半。
Since inception, it's had 17.9% annualized returns with half the volatility of stocks.
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