Stop Buying ETFs Like This (The €30,000 Mistake)

You can pick a great ETF and still lose tens of thousands of euros. Not because of the market, but because of how you buy it. Here are five mistakes I see in beginner portfolios all the time. Number three is so common, you're probably doing it right now, and it costs nothing to fix. Mistake one: owning the same thing five times.

A world ETF, an S&P 500 ETF, a tech ETF, and a developed markets ETF. It feels diversified. But they all hold the same big companies. In a world ETF, the United States is already around 70% of the fund, and the largest tech companies sit at the top of every one of these. So adding more funds can actually make you less diversified, with more paperwork.

One or two broad ETFs is usually enough. Mistake two: buying a theme ETF after the hype. AI, clean energy, robots, whatever is trending. The pattern is always the same. A theme goes up a lot, it's all over the news, money floods in, and many people buy close to the top.

Clean energy funds are a well known example. After their big run in 2020, many of them lost more than half their value in the years that followed. If you want a theme, keep it small, like 5 or 10%, and keep your core boring. Mistake three, the one you're probably making: buying by hand, whenever it feels right. You open the app, the market is up, so you wait.

Next month it's down, so you wait again. Months go by, and your money sits in cash. The fix is free. Most European brokers offer an automatic savings plan. Same amount, same day, every month, no decisions.

Set it once, and turn off the notifications. Checking your portfolio every day doesn't make it grow faster. It just makes you more likely to do something silly. Mistake four: selling when the market drops. It feels like protection.

But you lock in the loss, and then you have to decide when to get back in, and most people get back in after prices have already recovered. Research on the stock market keeps finding the same thing: some of the best days happen right after the worst ones. Miss a handful of them, and your long-term return can drop a lot. You can't sell before the bad days without also missing the good ones. And mistake five, the most expensive one: never starting, because you're still looking for the perfect ETF.

Here's what one year of waiting costs. €450 a month for 30 years at 6%, versus starting one year later. That single year costs over €30,000 at the end. Not because of the money you didn't put in, but because of the growth you gave up. A good, cheap, broad ETF today beats a perfect one next year.

So: don't own the same thing five times, keep themes small, automate, don't panic sell, and start now. Which of these five have you made? Be honest, tell me in the comments. And watch my lazy portfolio video next, it avoids all five. If this helped, subscribe for more money videos made for Europeans.

This video is for education, not financial advice. Thanks for watching.