对于企业目标、公司治理结构和股票期权合约的现实考察为理解股票期权制度的发展轨迹提供了初步的线索。
Thus, an investigation into the goal of enterprises, the structure of corporate governance and the contract of stock option provides some preliminary clues about the development of stock option.
期权持有人通常买合约避免股票投资的价值。
Option holders commonly buy contracts to protect the value of a stock investment.
除了指数期货和期权，期货交易所亦买卖四种货币期货及30种股票期货合约。
Besides Index futures and options, the HKFE also traded in four currency futures and 30 stock futures contracts.
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