As my followers well know, I advise investors to construct and hold a well-diversified portfolio built on a foundation of a high-quality, low-cost S&P500 ETF and to overweight the technology sector. Some argue that the S&P500 is already highly exposedMichael Fitzsimmons is a retired electronics engineer and avid investor. He advises investors to construct a well-diversified portfolio built on a core foundation of a high-quality low-cost S&P500 fund. For investors who can tolerate short-term risks, he advise ...