Bonds rally everywhere in May with bulls saying global debt selloff is over

Global investment-grade debt has returned almost 1% in May, the first monthly gain since July, while US Treasuries are heading for their best month since November

Bonds in almost every corner of the $63 trillion global debt market are bouncing back as investors begin to see value once again in fixed-income assets. 

Global investment-grade debt has returned almost 1 per cent in May, the first monthly gain since July, while US Treasuries are heading for their best month since November, according to Bloomberg indexes. A gauge of global corporate debt is set for its biggest advance since July, while emerging-market sovereigns from Mexico to Malaysia are also in the green. 

Investors point to a bevy of reasons for the recovery. These include signs the global economy