WASHINGTON: Lightly regulated “shadow banking” has grown to huge proportions in the global financial system and increasingly poses a risk to stability, especially in the United States, the IMF said on Wednesday.

Over $70 trillion in assets are handled by shadow banks around the world, according to a statement by the International Monetary Fund.

The sector includes legal but lightly policed institutions like mutual funds, money market funds, wealth management funds in China, and finance companies in emerging economies, that take money from investors and lend it like banks.

They have grown larger in the extremely low interest-rate environment of the past six years, as investors seek higher yields on their money and banks tighten up under tougher post-crisis regulation.

But the International Monetary Fund says in a new report that the risks are high because shadow banking largely depends on short-term funding. In a scare, it says, the impact of panic withdrawals can snowball into the broader financial system and global economy with outsized impact.

That was seen in the financial crisis in 2008, when US money market funds which were important lenders in Europe faced large redemptions, and with the near-collapse of companies like insurer AIG.

Since the crisis the power of shadow banks has only grown, the IMF report notes.

In the United States, shadow banks have nearly twice as much assets than banks, and in the eurozone their assets have reached 60 per cent of the banks.

In developing countries the figure is close to 60pc. The sector has rocketed in China, where banks face interest rate controls, pushing savers to seek better returns on their money outside the banks. The IMF estimates shadow banking amounts to 35-50pc of China’s gross domestic product.

Published in Dawn, October 2nd , 2014