Ted Allrich is the founder of The Online Investor and author of: Comfort Zone Investing: Build Wealth And Sleep Well At Night. In this weekly column, he'll offer advice to investors who are just getting started.
You may see a recommendation to "overweight" a stock or sector. An analyst is bullish on a stock or group and feels buying more than usual will be rewarded. It may or may not come true. While it's a good idea to overweight at times, it should never be done in excess, to a point where you're putting too much of your portfolio in one stock or group of stocks. That's when overweight turns into speculate.
A rational approach to building a portfolio is to have at least five different sectors, ones that aren't correlated. There are different definitions of sectors but there are usually between 10 and 15, depending on what publication or expert you use. These sectors are categorized into broad groups, such as Healthcare, Technology, Manufacturing, etc. Within each sector are many industries. Value Line defines 98 different industries, ranging from Coal to Auto Parts to Water Utility to Beverages. Healthcare, as one example of a sector, has pharmaceutical companies, hospitals, medical devices, anything associated with health. Technology has a broad spectrum as well, encompassing everything from computers to wireless communication.



