For how long should I invest?

It all depends on your investment horizon. There are people who speculate briefly (1 day to few weeks) on price fluctuations, but this is a game for people with strong nerves and without a special long-term strategy. This usually leads to extremely large gains or similarly large losses.

First of all, I recommend choosing a Popular Investor with a strategy that is understandable to the investor, in line with market trends and has a chance of success in the future.. Because it is in the future that you invest in, right? History shows that the longer you hold your stocks in the right strategy, the more you earn. I would say that investing in anything on the stock market for less than 6 months may not give the expected results, unless something unexpected happens in the market or with the company.

The stock market is an investment for the patient.

With a horizon of 1-3 years, there is a negligible chance of losing a significant part of the capital.

Take a look at complementary topic of when to start an investment here or other questions that I answered in other blog entries, for example how to increase investement over time here