My friend (PhD in Physics) runs a small hedge fund in Chicago. A team of about 6 traders and quants. They have been doing all their fairly sophisticated quantit

My friend (PhD in Physics) runs a small hedge fund in Chicago. A team of about 6 traders and quants. They have been doing all their fairly sophisticated quantitative models in Fortran for the past 15 years. He is currently learning R, though, and so Fortran at this shop may have its days numbered.