Rating agencies evaluate the creditworthiness of companies. A rating describes the assessment of a company"s ability to meet its interest and repayment obligations in the future. The higher the rating, the smaller the estimated potential risk. A company with a good rating can, as a rule, borrow money on the capital market on better terms than a company with a poor rating.
Vonovia SE has an "investment grade" rating provided on July 23 2013. This rating was sought by us and enables us to achieve our financial objectives.
Here you can find the Rating definitions of Standard&Poor's.