2 sentences for 大户 (dà​hù — big player)

1. 他是证券交易所里的交易大户。

   tā shì zhèng​quàn jiāo​yì​suǒ lǐ de jiāo​yì dà​hù.

   He is a major trader on the stock exchange.

   Source: Dong Chinese Dictionary

2. 在大户的操纵下，散户被当作韭菜收割了。

   zài dà​hù de cāo​zòng xià, sǎn​hù bèi dàng​zuò jiǔ​cài shōu​gē le.

   Under the manipulation of big players, retail investors were harvested like leeks.

   Source: Dong Chinese Dictionary