A former Fed trader predicts mounting US debt will worsen the bond-market crash. He shares which Treasury duration investors should buy to eventually profit from rising prices

• Bond yields plunged on Wednesday after Jerome Powell’s speech. 

• But Joseph Wang says US debt could cause yields to spike higher. 
• Since 2008, the financial system hasn’t been flexible enough to absorb more debt, he says. 

Bond yields from the one-month to the 30-year were all in the red on Thursday as they plunged after markets reacted to Fed chairman Jerome Powell’s remarks.