Before deciding to buy a company's stock, there are several key factors to consider. These include choosing a sector with good future potential based on industry opportunities and government incentives. It is also important to analyze the company's fundamentals like its balance sheet and income statement to evaluate its financial strength and ability to withstand competition. Additionally, consider the brand positioning strategy and growth outlook, traits of the company's management team, history of consistent business growth, judicious payouts to shareholders, and appropriate times for entry and exit from the investment. Technical factors should also be taken into account.