Goldman Sachs is scaling back plans for Marcus, its consumer lending platform. The move is fueled by growing concerns about the consumer debt market, according to reports. According to Bloomberg, Goldman has decided to scale back loan originations for 2019 for Marcus. No details were given on the new targets. Goldman Sachs has also declined to comment on the matter. Marcus has become a pillar for the company's plan to boost revenue over the next few years. The unit has grown very quickly, lending more than $4 billion in less than two years. Last year, the company said it sees a $1 billion revenue opportunity with its Marcus unit. The growth of the company's Marcus unit has raised questions from analysts about the credit quality of its loans, particularly because the bank said a large portion of its loan book is subprime. In August, Robin Vince, Goldman's chief risk officer, responded to these concerns during an investor call.