My name is David. I am an engineer and an investor . Due to having a demanding day-time job, I make investment decisions during evenings and mostly weekends. Most of my strategies have to pass computer simulations first to ensure favorable return/risk ratio. I am writing this blog to share my investments with friends and keep myself disciplined. This is for informational purposes only. Do not take it as financial or tax advice for your personal situation. Always consult with an appropriate expert.