jobber
noun /ˈdʒɒbə(r)/
/ˈdʒɑːbər/
(also stockjobber)
(finance- (in the UK in the past) a person who worked on the stock exchange, buying shares, etc. from brokers and selling them to other brokers
compare broker-dealer(英国旧时的)股票经纪人,证券交易商 词源late 17th cent. (in the sense ‘broker, middleman’, originally not derogatory): from job.