I have BSEE and MSEE degrees and spent my first career developing computers as an engineer and engineering manager. In the mid 1990's I shifted my focus to finance, earned an MBA degree and then the CFA designation. In 1999 I retired to focus on investing my accounts on a full time basis. I focus on three investing areas: mechanical system investing, value investing, and option trading. For mechanical investing, I focus on rule based systems that adjust portfolios monthly. I look at systems with other periods but usually fall back on monthly periods. For value investing, I have depended on subscription resources but hope to find the time to build my own DCF models for 10 or so companies with larger positions. Option trading is relatively new for me and I focus on a simple strategy of cash backed naked put portfolios on high quality undervalued stocks.