Mohamed El-Erian, chief economic adviser of Allianz SE, listens during a Bloomberg Television interview on the sidelines of the Bloomberg New Economy Forum in Singapore, on Tuesday, Nov. 6, 2018.
Wei Leng Tay | Bloomberg | Getty Images
Concerns about stagflation are weighing on Wall Street sentiment Monday morning, noted economist Mohamed El-Erian told CNBC in an interview before the opening bell.