There are two cases where the exchange of generated classes is required.

有两种情况需要交换生成的类。

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One reason the New York Stock exchange (NYSE) is merging with Euronext, a pan-European exchange operator, is to expand into these asset classes through Euronext's Liffe derivatives market.

原因之一就是纽约证券交易所(NYSE)已经和欧洲证券市场合并形成泛欧洲地区交易经营，这使得纽约证券交易所通过泛欧洲交易所的衍生品市场扩展进入这些资金市场。

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Additionally, SchemaServer describes the structural models used to store and exchange information as a hierarchy of information classes.

另外，SchemaServer描述了结构性模型，用来以信息类的层次结构形式存储和交换信息。

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Some firms have separate systems for different asset classes, such as foreign exchange, equities, and options.

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Rather, they hold fixed allocations in several asset classes using low-cost index funds or exchange-traded funds (ETFs) and rebalance their portfolios back to a target as needed.

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Trade Exchange appears to believe there is enough hunger among hedge funds and other institutions for new classes of investments to trade.

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