另类交易系统都是由经纪人或经销商运营的。他们主要服务于大的投资者，如退休基金，大学和金融公司。
Alternative trading systems are operated by brokers or dealers. They mainly serve big investors like retirement funds, universities and financial companies.
另类交易系统都是由经纪人或经销商运营的。他们主要服务于大的投资者，如退休基金，大学和金融公司。
Alternative trading systems are operated by brokers or dealers. They mainly serve big investors like retirement funds, universities and financial companies.
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