Your investment portfolio will consist of a mix of stocks and bonds. To maximise your impact, you will be the owner of the 30-40 stocks in your portfolio. Each company in your portfolio counts for about 2-3% of your investment sum. This way, your portfolio is optimally diversified and no position is over exposed. You can find more information about diversification here.
For the bonds in your strategy, we use an ETF to adapt your investment to your personal risk preference.