Author of Quantitative Investing, the Quantitative Risk & Value letter and the free Market Timing Signals. Often in the SeekingAlpha top 5 on Portfolio Strategy. Available model portfolios: market neutral, growth, closed-end funds, Vix trading. For more information, click "send message". PhD, Software Engineer, Civil Engineer, 20+ years working in various sectors and countries. Also a lifelong rock climber and ex ski-mountaineering racer.