如果两个卖家有一家可以满足价格要求，是部分成交还是要么全部成交，要么全部撤单？

问题如下：

Adonis has submitted an fill-or-kill buy order with a limit price of $21.30, to buy 600 shares of a company. At that moment, two sell limit orders were recorded in the stock's order book. One is for 300 shares at a limit price of $21.35 and the other is for 400 shares at a limit price of $21.40. How many shares in Adonis’s order would get cancelled?

选项：

None (the order would remain open but unfilled).

300 (300 shares would get filled).

600 (there would be no fill).

解释：

The order for 600 shares would get cancelled; there would be no fill. Adonis is willing to buy all 500 shares at CNY 21.30 but the minimum offer price is CNY 21.35; therefore, no part of the order would be filled. Because Adonis’s order is fill-or-kill, it would be cancelled.

考点：Instructions Of Transaction Processes

市场上的两个卖价都比A同学报的买价要高，因此A同学一股也买不到，这个指令是不成交立马取消，所以600股全部撤销。