"We expect the Fed to begin cutting rates in September, and it could be justified cutting the Funds rate by 50 basis points," Rick Rieder said.

Tuesday's inflation report for July has investors expecting the Federal Reserve will cut rates not once, not twice, but three times before year-end.

"We expect the Fed to begin cutting rates in September, and it could be justified cutting the Funds rate by 50 basis points," Rick Rieder said.