Investors in US corporate bonds are earning so much money from their interest payments and reinvesting it so quickly that companies can’t keep up with the demand. Blue-chip businesses have sold more than $1 trillion of bonds this year through August, data compiled by Bloomberg shows. Yet money managers have received even more than that in interest and principal payments, according to BNP Paribas — most of which they will pour back into the market. Most Read from Bloomberg The bank estimates that inve ...