mǎi​kōng​mài​kōng

speculate

买空卖空 (買空賣空) mǎi​kōng​mài​kōng
speculate expression
to engage in financial speculation, specifically by buying on margin or short selling in the market
swindle idiom
to deceive or cheat people by selling non-existent goods or posing as a reputable operator

Frequency

Written text
0.119 per million

Sources

Definitions
CC-CEDICT
Frequency data
BCC Corpus (BLCU)