The marketplace lending industry has not matured sufficiently to allow lenders to start securitising their assets, according to institutional investors.A group of investors on a panel at the Australian Securitisation Forum conference in Sydney yesterday said they had held talks with marketplace lenders about their prospects for issuing asset-backed securities but to date the risks outweighed the benefits.Challenger Investment Partners co-head of fixed income Marcus Elsum said: "We have had a lot of discussions but there are some risks that we need to understand better."There are different business models that need to be understood. We need to understand their break-even points. And there are questions about the volume of business they are doing."QIC director of research and strategy Katrina King said: "The measurement of consumer risk is very disparate. In the US borrowers have a FICO score."We don't have that consistency here and it would be helpful."Nikko Asset Management Australia head of credit John Sorrell said he expected to see an expansion of asset-backed securities vehicles but it would not be a major development and growth would be steady.