The minimum amount of investment is equal to the nominal amount of one Security, which is €1 by default but may change in the course of principal repayments. Here is an example:

The value of an investment in Securities is €100, which equals to 100 Securities. €10 are repaid and the value decreases to €90, but the amount of Securities remains the same – 100. Thus, the nominal value of each Security changes to €0.90 and the minimum amount to invest in these particular Securities decreases to €0.90 accordingly.