It’s now nearly 10 years since I first started investing in stocks for my family in October 2010. During this period, I also helped pick stocks professionally (from May 2016 to October 2019) while I was at The Motley Fool Singapore. I’ve developed 7 personal investing rules for the stock market throughout these years that I think are timeless. I also think these rules are worth sharing now, since there’s so much uncertainty about the future with the world living under the shadow of COVID-19. In no particular order, here they are: Rule 1: Focus on business fundamentals, not geopolitical and macroeconomic developments Peter Lynch, the legendary manager of the Fidelity Magellan Fund from 1977 to 1990, once said:  “If you spend more than 13 minutes analyzing economic and market forecasts, you’ve wasted 10 minutes.” Focus on business fundamentals to find great companies because it is great companies that produce...