In 2015, clean energy investment set a new record with $329 billion flowing to the sector, even as fossil fuel prices plummeted.

But only a fraction of those dollars came from institutional investors, according to a new white paper from World Economic Forum. Of the top 500 asset owners in the world, including foundations, pensions and endowments, only 0.4 percent of their $38 trillion worth of total assets under management are low-carbon investments.

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