In our firm's earliest days, our understanding of the power of great software engineering and quantitative analytics helped Citadel stand out.

It is incredible to come to work every day surrounded by individuals whose insights and efforts place us at the forefront of finance.

If you think about the amount of critical thinking that has come into the field of economics, two universities have dominated the landscape in my life: Chicago and Harvard.

One of the great advantages that I had in my career is I started trading 24 hours a day in my early 20s, and I had to learn to delegate to people.

I always feel like 'as long as I'm doin' what I love to do, the money's naturally gonna come.' When you start thinkin' business and you start thinkin' 'What's hot? What's the wave? Who is hot? Let's get at that person,' it becomes a point where you're tryin' to strategize to make money. And that's always a gamble.

Partnering with CNBC will allow Yahoo! Finance to expand its offerings instantly and enhance its position as the most viewed and utilized finance site in the world.

One thing is that I wasn't getting booked that well, and they had control over who got the awards, they had control over who sold. And they really did not want Willie or me, either one, to have a hit record. They wanted the money, but they didn't want us to be the ones.

One of the tricks of life is to have sense and money in roughly equal proportions.