Re:In a town of gamblers, Mattermark is counting cards
by mynameisme on Thursday August 22, 2013 @04:31PM
(#6259867)
Sorry, I was being rhetorical, I guess it wasn't obvious. My point to the parent was that no need to bet your entire life savings on one company, you can split it among hundreds and take advantage of your edge.
The investment rule that underlies Kelly is to maximize the log of your net worth. Why? Bets multiply your net worth by a random factor, take logs and you're adding a random factor. In the long run a sum of independent random factors tends to converge to the expected value, so maximizing the expected log of your net worth will result in a strategy that with 100% odds will, in the long run, beat any other.