Recently, many beginners have been asking what large-cap stocks are. In fact, this is a concept that you must understand when entering the stock market. Simply put, large-cap stocks are the companies with the largest share of market capitalization and the strongest influence on the index—Taiwan’s TSMC, Hon Hai, and MediaTek are typical examples.

Why should you pay attention to large-cap stocks? Because they directly determine the market’s ups and downs. I once saw a statistic: when TSMC’s stock price rises by 1 yuan, the weighted index increases by about 8 points. This is why large-cap stocks are often seen as a market barometer. By comparison, the fluctuations of smaller stocks have little impact on the index.

From an investment perspective, large-cap stocks usually have several characteristics. First, they are industry leaders or large enterprises with stable financial conditions and strong profitability. Second, most of them offer regular long-term dividends, and the dividend yield is also fairly good—making them attractive to investors who want stable cash flow. Third, because market funds and institutions hold them for the long term, their stock prices typically fluctuate much less than those of mid- and small-cap stocks, and they tend to be more resilient during downturns.

When it comes to Taiwan’s large-cap stocks, TSMC is definitely number one, with more than 40% of the market capitalization—an absolute leader in global semiconductor foundry. As the world’s largest electronics contract manufacturer, Hon Hai has been actively expanding in recent years into electric vehicles and AI servers. MediaTek’s performance in the mobile chip market is becoming increasingly impressive, and it is also expanding into AI chips and automotive electronics. Delta Electronics is a leader in power management and automation solutions, and its ESG performance is also strong. As Taiwan’s largest telecommunications provider, Chunghwa Telecom has stable traditional business, and it is also transforming through the development of 5G and cloud services.

The U.S. stock market has an even higher concentration of large-cap stocks. Tech giants such as NVIDIA, Microsoft, and Apple all have market values of more than $3 trillion, and they exert a very significant influence on U.S. stock indexes.

There are several ways to invest in large-cap stocks. If you have sufficient funds, you can buy individual stocks directly—but you should choose companies with stable and steadily growing revenue and gross profit, steady EPS, and a continuous dividend record. If you’re afraid of investing all at once and buying at a high point, dollar-cost averaging is a good option to spread out your average cost. If you don’t want to spend too much time researching individual stocks, you can consider a large-cap stock ETF, so you can hold multiple leading companies with a single purchase.

However, there are a few important things to pay attention to when investing. First, focus on the overall direction of the capital markets. Large-cap stocks may be a barometer, but if only large-cap stocks are strengthening while the broader market is weakening, you need to be especially cautious—because once a market trend forms, it is usually not easy to change. Second, pay attention to the industries to which the large-cap stocks belong, because industry prospects directly affect long-term returns. Finally, make sure you fully understand the stock’s historical price trends and business situation before making a decision—do not blindly follow the crowd.