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

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。

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Just ask the poor UBS clients who were sold Lehman Bros. principal protected notes.

FORBES: Rethinking Long-Only Equity

Principal protected notes are one common type of structured product.

FORBES: Rethinking Long-Only Equity

Combining derivatives with high-yield notes had gotten untold numbers of investors into trouble, especially those who invested in Lehman principal protected notes, which went belly up and left investors holding the bag.

FORBES: Investment Conflicts SEC Should Police First