The most reliable and straightforward way to determine a company's market value is to calculate what is called its market capitalization, which represents the total value of all shares outstanding. The market capitalization is defined as a company's stock value multiplied by its total number of shares outstanding. It is used a measure of a company's overall size.   Note that this method only works for publicly traded companies, where share values can be easily determined. A disadvantage of this method is that it subjects the company's value to the fluctuations of the market. If the stock market declines due to an external factor, the company's market capitalization will fall even if its financial health has not changed. Market capitalization, because it relies on investor confidence, is a potentially volatile and unreliable measure of a company's true value. Many factors go into to determining the price of a share of stock, and thus a company's market capitalization, so it's best to take this figure with a grain of salt. That said, any potential buyer for a company might have similar expectations to the market and place similar value on the company's potential earnings. The share price of the company is publicly available on many websites, including Bloomberg, Yahoo! Finance, and Google Finance, among others. Try searching the company's name followed by "stock" or the stock's symbol (if you know it) on a search engine to find this information. The stock value that you'll want to use for this calculation is the current market value, which is usually displayed prominently on the stock report page on any of the major financial websites. Next, you'll have to figure out how many shares of the company's stock are outstanding. This represents how many shares the company are held by all shareholders, including both insiders, like employees and board members, and external investors like banks and individuals. This information can be found either on the same website as the stock price or on the company's balance sheet...

How would you rephrase that briefly using Vietnamese?
Xác định liệu rằng giá trị vốn hóa thị trường có phải là lựa chọn định giá tốt nhất. Xác định giá cổ phần hiện tại của công ty. Tìm số lượng cổ phiếu đang lưu hành trên thị trường. Lấy số cổ phiếu lưu hành trên thị trường nhân với giá cổ phiếu hiện tại để xác định giá trị vốn hóa thị trường của công ty.