当不同期的按揭证券并非由同一出资者拥有时，承销本金还存在着法律方面的问题。

There are also legal issues with underwriting principal when different tranches of mortgage-backed securities are not held by a single investor.

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通过提供一组证券来保有本金，获得有上限收益的保本票据也不断变得流行起来。

Principal-protected notes, which offer a basket of securities that secure capital and put an upper-limit on returns, are also increasingly popular.

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由于联邦会计标准委员会有关“市场决定价格”原则的157条规定，华尔街不得不减记这些较低价格的有价证券并增加更多的资本金，稀释股东。

Because of the Federal Accounting Standards Board's mark-to-market 157 rule, Wall Street had to write off the lower value of these securities and raise more capital, diluting shareholders.

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