Renaissance Technologies is one of the most mysterious hedge funds in the world.
With over $15 billion in assets, it is one of the largest single trading entities on the planet. Its flagship fund has one of the greatest long-term records in the history of modern financial markets. And almost no one — perhaps not even the folks who run the company's hedge funds — knows how it is done.
And now, the company founded in 1982 by mathematician James Simons is a bit more mysterious.