Soros required nearly 20 years to develop his edge. Last busted account was just before started quantum fund.
he is the author of Fluctuations! The inside story of how Wall Street !@#$%& Asia Without a Kiss what are you the author of?
from reading his book, he started exposure to markets around 23, and I know he started fund when 40 with little of his money. Someone on ET forum mentioned that he busted his account just prior starting fund. so presume at 39 or so... robust, lasting edges takes time to develop. Going thru enough cycles to be confident what to look for and what to ignore, enough to stand in position.
http://www.amazon.com/Fluctuations-...08&sr=8-1&keywords=michael+marin+fluctuations About the Author Michael J. Marin, former general counsel and head of the legal department for Salomon Brothers in Asia, is a Yale Law School graduate who repented of becoming a lawyer only to venture further down the dark path onto the trading floors of Wall Street, first as head of derivative finance for Lehman Brothers in Asia, and later as a director of Merrill Lynch in Tokyo.