I've been in the markets for a while, and one thing I see that many beginners don't understand well is how the different types of stocks actually work. Most think that all stocks are the same, but the truth is there are differences between common and preferred stocks that can completely change your investment strategy.

Let me explain this clearly. Companies can issue two main types of stocks, and each has very different characteristics. If you understand these differences between common and preferred stocks well, you'll be able to choose much better based on what you're looking for.

Common stocks are the ones most people know. They give you voting rights at shareholder meetings, which means you have a say in important company decisions. The dividends you receive depend directly on how well the company performs, so they can be high in good years or almost nonexistent in tough years. If the company goes bankrupt, you're at the end of the line waiting to recover something. But in return, you have real potential to make money if the stock price rises.

Preferred stocks work differently. Here, you don't have voting rights, but you get more stable and predictable dividends. It's like having a fixed income. If there are problems and the company is liquidated, you have priority over common shareholders. The downside is that your profit potential is more limited, and they are generally less liquid to sell.

There are interesting variants of preferred stocks. Cumulative stocks guarantee that if the company can't pay dividends one year, those payments accumulate for later. Convertible stocks allow you to exchange them for common shares under certain conditions. Redeemable stocks can be repurchased by the company. Each one suits different strategies.

Now, which one to choose? This is where your investor profile matters. If you have time, can handle volatility, and are looking for long-term growth, common stocks are your path. They are for those who want their money to work and grow, even through turbulence. We're talking about people in early or middle stages of their financial life who can wait for the market to do its job.

If you're more conservative, thinking about retirement or simply preferring regular income without surprises, preferred stocks fit better. Many investors use a mix of both to balance risk and return. That's smart: diversify.

One thing I always look at to understand the differences between common and preferred stocks in practice is how they behave in the real market. The S&P U.S. Preferred Stock Index, which represents about 71% of the preferred stock market in the U.S., is a good benchmark. Over a five-year period, this index fell 18.05%, while the S&P 500 rose 57.60%. That clearly shows how they react differently to changes in interest rates and economic conditions.

If you want to start investing in stocks, the process is straightforward. First, choose a regulated and trustworthy broker. Open your account by filling in your personal details and making an initial deposit. Then carefully analyze the company whose stocks interest you. Finally, execute your order, either at the current market price or at a price you set.

My key recommendation: don't put all your eggs in one basket. Mix common and preferred stocks according to your situation. And review your investment periodically. The market changes, and your strategy should adapt.

The important thing is that now you understand that these differences between common and preferred stocks are not just technicalities. They are the foundation for building a portfolio that fits your real goals and risk tolerance. Each type of stock has its place; it depends on who you are as an investor.