上周中国证券监管机构通知多家券商管控个股场外衍生品新增规模，请看本报周四的报道：

Regulators in China have told securities firms to stop expanding their over-the-counter (OTC) derivatives operations involving individual stocks, limiting a profitable business for the brokerage industry and dealing another setback to hedge funds that deploy long-short strategies.

Regulators last week told multiple major brokerages to cap OTC businesses including total return swaps and options at the current levels, said people with knowledge of the matter.

报道中的long-short strategy是“多空策略”，指在买进一部分资产（做多）的同时，卖出另一部分资产（做空），以达到追求收益和控制风险的目的。