Recently, I was wondering about something that many investors overlook: do we truly understand the differences between common and preferred shares? Because the truth is, not all shares are the same, and this can completely change your investment strategy.

Public companies mainly issue two types of shares, and each plays a very different role in your portfolio. The differences between common and preferred shares go far beyond just the name. Understanding this is critical if you want to invest smartly.

Let's start with the basics. Common shares are the most traditional type we know. They give you voting rights at shareholder meetings, meaning you have a voice in important company decisions. You also receive dividends, but here’s the point: these vary depending on how well the company performs. If the company does well, your dividends can be substantial. If it performs poorly, you might receive little or nothing. And if the company goes bankrupt, you are at the end of the line waiting for your compensation, after creditors, bondholders, and preferred shareholders.

Preferred shares work differently. They generally do not give you voting rights, so you lose influence over corporate decisions. But in exchange, you get something more valuable for certain investors: more stable and predictable dividends. These dividends are usually fixed or have a predetermined rate. And here’s the important part: in case of liquidation, you have priority over common shareholders. It’s not the best position, because you’re still behind creditors and bondholders, but it’s a better position than ordinary shareholders.

There are interesting variants of preferred shares worth knowing. There are cumulative ones, where unpaid dividends accumulate for later payment. Non-cumulative ones work the opposite: if dividends are not paid, they are lost. Convertible preferred shares allow you to transform them into common shares under certain conditions. There are also redeemable preferred shares, which the company can buy back, and participating preferred shares, which link your dividends to actual financial results.

Now, the most important differences between common and preferred shares are in risk and return. Common shares offer greater growth potential. If the company grows, your shares can multiply. But they can also decline significantly. Volatility is part of the game. They are ideal if you have a long-term horizon and stomach to withstand market fluctuations.

Preferred shares are the opposite. Your growth potential is limited. Usually, their price moves according to interest rates, not the company’s spectacular performance. But that’s exactly what certain investors seek: predictability. If you’re close to retirement or need a steady income stream, preferred shares can be your ally.

From a liquidity perspective, common shares are usually easier to sell in major markets. Preferred shares can be more complicated, with restrictions and redemption clauses that limit your flexibility.

Talking about capital structure, preferred shares occupy an interesting place on the balance sheet. Accounting-wise, they are classified as equity, but in certain analyses, they can be treated as debt, especially if they have features very similar to bonds. This is important because it affects how regulators and rating agencies view the company’s financial health.

Regarding strategy, everything depends on your profile. If you’re young, have stable income, and can afford to wait, common shares probably suit you better. Long-term growth compensates for volatility. But if you’re in capital preservation mode, need regular income, or simply prefer peace of mind, preferred shares offer that stability.

Many smart investors do both: mix common and preferred shares in their portfolio. This gives you the best of both worlds. Potential growth from common shares, more stability from preferred shares. It’s real diversification.

If you want to start investing in either of these types, the process is quite straightforward. First, choose a regulated and trustworthy broker. Open your account, fill in your details, and make an initial deposit. Then analyze the company carefully: its numbers, sector, competitive position. When you’re ready, you can place market orders (current price) or limit orders (at the price you set). Some brokers also offer CFDs on these shares, allowing you to trade without physically holding them in your portfolio, depending on available liquidity.

A final interesting point: if you compare the S&P U.S. Preferred Stock Index with the S&P 500 over the last five years, you clearly see how these instruments behave in changing monetary policy environments. The preferred stock index fell about 18%, while the S&P 500 rose nearly 58%. This exactly reflects what we’ve been discussing: different volatility, different behavior, different investment objectives.

The key is to understand what you need. If you seek growth and can tolerate volatility, common shares are your path. If you want predictable income and stability, preferred shares make more sense. And if you’re smart, you’ll probably combine both according to your personal situation and investment horizon. That’s what experienced investors do: adapt their portfolios to their real needs, not follow dogmas.