The U.S. leveraged loan market in May posted its biggest monthly loss since the onset of the Covid-19 pandemic, plunging 2.56%,according to the S&P/LSTA Leveraged Loan Index.  As credit market participants considered how rising interest rates, inflation, supply chain issues and a labor shortage would impact speculative-grade borrowers, new-issue supply during the month dried up, hitting the lowest level in more than two years.  Written by Marina Lukatsky.