The Renren-backed alternative lending platform is looking to go public later this year at a $3.5bn valuation, more than double that at which it raised money last month.

US-based alternative lending platform Social Finance (SoFi) plans to launch an initial public offering this year that could raise up to $500m at a $3.5bn valuation, Bloomberg reported yesterday.

SoFi intends to confidentially file for the IPO in the second quarter of 2015, with the flotation to go ahead in the second half of the year, according to people with knowledge of the matter, though the timing will depend on market conditions.

Goldman Sachs and Morgan Stanley are being lined…