Experts warn of further defaults as CCC bond yields reach all-time lows Events If you already have an account please use the link below to sign in. If you have any problems with your access or would like to request an individual access account please contact our customer service team. 'Zombification' of real economy Current valuations among high-yield bonds leave "little margin for error" despite the fact there are "still some defaults to come", according to several investment professionals, who warn markets have become complacent as economies reopen and central banks remain accommodative. The urge for caution follows data from Bloomberg and the ICE BoA index published last Monday (19 April), which found that CCC-rated bond yields have hit a record low of 8%.