Bottom-Up Investing is an investment strategy that concentrates on individual stocks and downplays the importance of macroeconomic and market cycles. Bottom-up investment, in other words, focuses on a given company's fundamentals, such as sales or profitability, rather than the sector or the entire economy. Bottom-up investment implies that individual firms can perform well even in an industry that is under performing, at least relative to other industries.What is bottom-up investing?Bottom-up investing is an investment strategy that focuses on individual stocks and downplays the importance of macroeconomic and market cycles. In other words, bottom-up investment focuses on a given company's fundamentals, such as sales or profitability, rather than the sector or the entire economy.Why bottom-up investing?There are a few reasons why you might choose to focus on bottom-up investing. First, bottom-up investing allows you to take advantage of individual companies that may be performing well even in an industry that is underperforming overall. Second, bottom-up investing gives you more control over your investment decisions, since you are making decisions based on individual companies rather than macroeconomic factors.What are the risks of bottom-up investing?Of course, there are also risks associated with bottom-up investing. One risk is that you may miss out on sector-wide or market-wide trends. For example, if the overall market is going up, but you are focused on individual stocks that are going down, you will not participate in the market's gains. Another risk is that you may invest in a company that turns out to be overvalued or otherwise not a good investment.Bottom-up investing is not for everyone, but it can be a good strategy for those who are willing to do the research and are comfortable with the risks. If you are considering bottom-up investing, be sure to do your homework and understand the risks involved.