对投资银行来说答案也很重要，因为投行将这些证券打包，通常拥有发行抵押贷款的子公司。

It also matters to investment Banks, which packaged the securities and often own subsidiaries that originate mortgages.

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ETN是证券债券，由指数制定者或银行发行，可以在市场上进行交易。ETV和它类似，但发行者是特殊目的机构。

An ETN is a debt security issued by an index provider or a bank and traded on the market; an ETV is similar, but the debt issuer is a special-purpose vehicle.

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Tarullo先生建议，银行应该发行新的证券来测试投资者对其信心指数。

Mr Tarullo suggests that Banks should issue new securities to serve as gauges of investors' faith in them.

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