风险投资组合中的加权平均偿还期，考虑到所有提前偿付的抵押贷款、卖权和可调整债券。
A weighted average of the maturities of the bonds in a portfolio, taking into account all mortgage prepayments, puts, and adjustable coupons.
有1000亿美元的可调整级别的次级抵押债券，受益于去年10月的级别调高，但投资者们似乎依然谨慎。
With some $100 billion of adjustable-rate subprime mortgages due to reset to higher rates by October, investors are likely to remain twitchy.
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