5/7  BIS central bankers' speeches  Another driver of growth in sustainable bonds would be a positive risk/return profile compared with conventional bonds. The October 2019 issue of our Bundesbank Monthly Report compares secondary market trading in conventional and green bonds issued by the KfW and the EIB.
According to the report, there are no clear patterns, at least when it comes to yield spreads. But the analysis is merely a snapshot. Of course, it’s not enough to look at the bond market alone; we also have to consider the equity market.