Usually the strike price is set " at the money" , or at whatever level the stocks are trading when the option is written.

通常，执行价格是“按价”设定的，或者是在卖出期权时股票交易的任何水平。

These are contracts that give the buyer the right (though not the obligation) to buy the stocks for a set price (or " strike price" ) in the future.

这些合同赋予买方未来以设定价格（或“执行价格”）购买股票的权利（尽管不是义务）。