Recently, I’ve been looking at some investment cases and found that the performance of stock prices after capital increases doesn’t follow an absolute pattern, which is quite interesting. Many people think that when a company conducts a cash capital increase, the stock will definitely go up, but that’s not really the case.

First, let’s talk about what a cash capital increase is. Simply put, it’s when a company issues new shares to raise money, possibly for expanding factories, paying off debt, conducting R&D, or responding to unexpected situations. The company will notify existing shareholders to participate in the capital increase, and shareholders decide whether to buy the new shares. After the process, the company’s capital increases, but shareholders’ ownership percentage might be diluted.

So, what happens to the stock price after a capital increase? It depends on several factors. First is the supply of new shares; if it exceeds market demand, the stock price is likely to be pressured downward. Next is investor sentiment—whether they believe this money can help the company grow. Also, whether shareholders’ ownership is diluted matters.

What left the deepest impression on me was Tesla’s case. In 2020, Tesla announced a new share issuance of $2.75 billion at $767 per share, aiming to expand global capacity. Logically, after a capital increase, the stock price should be diluted. But at that time, Tesla was extremely popular, and investors were optimistic about its prospects. As a result, the stock price didn’t fall; it actually rose for a while. Everyone believed that this capital could drive technological upgrades and market expansion, so the stock price was supported rather than pressured.

Similarly, TSMC’s case in late 2021 was comparable. They announced a cash capital increase, and the market reacted enthusiastically. Because TSMC is a top-tier name in the industry, with stable operations, and existing shareholders generally had confidence and were willing to participate to maintain their ownership ratio. As a result, the stock price after the increase wasn’t overly diluted; instead, it rose because the market was confident in the company’s future prospects.

Therefore, the key to whether a stock price rises or falls after a capital increase isn’t the increase itself, but how the market perceives the company. Whether the company is profitable, industry outlook, overall economic environment, policy changes—these are the real factors influencing stock prices. A cash capital increase is just one variable among many.

From the pros and cons perspective, a cash capital increase can help a company quickly raise funds, improve its financial structure, and boost market confidence. But it can also dilute existing shareholders’ equity, face uncertain market reactions, and increase financing costs. So, when investors evaluate the stock’s movement after a capital increase, they should focus on the company’s fundamentals and long-term growth potential, not just the act of increasing capital.

If you participate in a capital increase, remember that you don’t get the new shares immediately. Usually, you have to wait until the company completes accounting, gets approval from the stock exchange, and registers shareholders before you can actually receive the new shares. So, if you want to participate, patience is necessary. Overall, whether the stock price can rise after a capital increase still depends on the company’s competitiveness and market outlook.