[fruser1]

IIRC, Renaissance Technologies uses mathematical models to do big buys and sells to get fractional changes in the market in the direction they want. Their fund is only open to employees I believe, of which a large number are mathematicians.

https://www.rentec.com/Home.action?index=true

[srmanuel]

You’re correct about Renaissance Technologies and their flagship fund, The Medallion Fund.

The fund has produced returns in excess of 50% for over thirty years

The book entitled The Man Who Solved the Market written by Gregory Zuckerman is about Jim Simon who started Renaissance Technologies

I just finished reading it