in my case, before I started trading in the end of 2006, I had studied market for 3 years. in 2004, I bought 20 dell precision desktops, and used machine learning to identify profitable patterns. the calculation was so cpu intensive, at one point, it caused outrage in my apartment. the software dug out hundreds of patterns with statistical meaning, most of which were due to over fitting. after careful research, I located one pattern that has true edge, which i have used since then for the last 12 years. the trading system has less 2% dd over the last decade, sharpe ratio on average above 7. I made 230% in 2007, 250% in 2008, since 2007 was bull and 2008 was bear year, I figured my system had survived both bull and bear cycle, and thus I had confidence that I could quit the tenured government position.
So did you quit your day job and go live after 2008?
