IDBI Bank has raised $500 million through a five-year bond sale in the international markets at a coupon of 3.75 per cent. “The final pricing for the $500 million international debt issue from IDBI Bank got tightened by 15 basis points to 300 basis points over the U.S. treasury bills. The issue marks the first long five-year tenor issuance by the bank,” Managing Director and Head of Debt Capital Markets at Standard Chartered Bank South Asia Jujhar Singh told PTI from Singapore on Wednesday.