Kelly Criterion
https://www.youtube.com/watch?v=_FuuYSM7yOo
\(f = p/a - q/b\)
- where \(f\) is the fraction of money to bet
- \(p\) is the probability of win, \(q\) is probability of loss
- \(a\) is the factor by which the invesment increases on win, and \(b\) is the factor for loss
