Why did you buy it, if not to keep it longer? Here is my company presentation and opinion in more detail, if you are interested ☺️✌️. I've been invested a little longer than you and have also added to my holdings.
There is a difference between buy and hold and short-term trades. Nobody can tell you whether the share will correct again. If you are worried, take 50% out and look forward to buying again (if it goes lower again). Or just keep holding, seat fluctuations too and look at the position in 10 years
How are you ever going to make 100% or more on a stock if you sell them all as soon as you're up 30%? I don't know where hes is headed either, but just as a thought.
33 percent of a few 100 euros are.... even less Euro.... less any taxes. The share is one of the top 10 performers in your portfolio. Even if there is a significant correction, the chance of a major loss is small. Why did you want to invest? If the basis is no longer right, then get out. If you want to make a swing trade, trial makes perfect. Do you have an alternative that you think would suit you better? Or are you afraid of a crash or at least a sharp correction?