Correct

卖空

/ mài kōng / 
Strokes

Definition

to sell short (finance)

Example

As a Verb

sell short (a stock); short (stocks or other securities or commodities)

1
Gǔmín
股民
men
们
zài
在
yùliào
预料
gǔjià
股价
huì
会
diē
跌
shí
时
jiù
就
mài
卖
kōng
空
  
。

Stock investors sell short when they expect the market to decline.

2
Mài
卖
kōng
空
mǎi
买
kōng
空

sell short and buy long