Jim Simons was a mathematician who was in conversation with Chris Anderson in March 2015 on Ted Talks, spoke about how the NSA had hired mathematicians at Princeton to attack secret codes. He was a code cracker for the NSA until he was fired at 29 years old because he wrote a letter to the NY Times about his view on the Vietnam War.
Later, after generating billions, he worked to support math teachers and scholars of the next generation. Ted Talks is a podcast where brilliant minds go to speak for 20 minutes or less.
Based on the conversation between Jim Simons and Chris Anderson, his code that was used to crack wall street was based on some mathematical sphere. You have to be a mathematician to even come close to understanding what this man says in this video.