1) Stock market 2) Stock trader 
Stockjobbers were institutions that acted as market makers in the London Stock Exchange. Prior to `Big Bang` in 1986, every stock traded on the Exchange passed through a jobber`s book, where they acted as intermediaries between stockbrokers, who were in turn not permitted to be market makers. Immediately prior to the Big Bang, the leading jobbi......
• (n.) One who speculates in stocks for gain; one whose occupation is to buy and sell stocks. In England a jobber acts as an intermediary between brokers.
Stock'job`ber noun [ Stock + job .] One who speculates in stocks for gain; one whose occupation is to buy and sell stocks. In England a jobber acts as an intermediary between brokers. 
[n] - (British) one who deals only with brokers or other jobbers
noun one who deals only with brokers or other jobbers
a stock salesperson, esp. one who sells or promotes worthless securities. · a stock-exchange operator who acts as an intermediary between brokers.