Utility Industry Research & Analysis: The utility industry includes companies whose sales come from the administration of public services such as water and power. Utility Trading Strategy: The utility industry tends to be less sensitive to economic cycles, because public services are essential to industrial and residential consumers. Look to buy undervalued utility investments when stock prices are low and sell overvalued utility investments during any part of the business cycle when stock prices are high. Upward sloping stock charts and financial news may indicate a selling opportunity while the opposite means that stocks are becoming undervalued.