Investors set for more M&A bonds after US ruling, but caution advised

German pharmaceutical company Bayer's $15bn and €5bn issuance this week provided the first big M&A related issuance the euro investment grade corporate bond market has seen for three months. However, following a court ruling in the US on AT&T's planned acquisition of Time Warner, there is likely to be more to come. Investors are aware of the need for careful analysis however.