Gross
Pimco co-CIO Bill Gross predicts the Fed will maintain its stimulus stance for a long time. Reuters/Jason Reed

Pimco's Bill Gross, who heads the world's largest bond fund, said the United States is approaching a recession, Bloomberg News reported Tuesday.

The U.S. is approaching recession when measured by employment, retail sales, investment and corporate profits, Gross, who manages the $263 billion Pimco Total Return Fund, or PTTRX, wrote on Twitter Monday.