I'm currently working in a large international company in charge of team of 8 brokers; we buy and sell stocks for major clients worldwide.

我目前在一家大型国际公司工作，负责8人经纪团队；我们为全球的主要客户买卖股票。

youdao

We buy and sell stocks for major clients worldwide.

我们为全球大户买卖股票。

youdao

People pay brokers to buy and sell stocks for them.

人们通过股票经纪人去买卖股票。

youdao

Day traders may buy and sell stocks hundreds of times each day.

VOA: special.2009.04.26

Day trading allows me to buy and sell stocks for an hour or two each day, from anywhere in the world.

BBC: How I quit my job to travel: The banker

They help generate extra volume from "black box" traders who use computer programs to buy and sell stocks in millisecond intervals, often for a tiny loss, in order to reap rebates of 20 cents per 100 shares.

FORBES: Get Briefed: Robert Greifeld

Everyone else knows the same things, and that includes the pension funds, mutual funds, and hedge funds that buy and sell lots of stocks and bonds, thus moving the market prices.

FORBES: WHY OUR PORTFOLIOS DIFFER (Part 2)