BlackRock Chairman and CEO Larry Fink, seen here in Paris in July, wrote in his annual letter to CEOs that climate change will soon cause "a significant reallocation of capital."
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Investors are spending billions of dollars to align their portfolios with their personal values. But there's little agreement on what exactly qualifies — or disqualifies — an investment option from being marketed as sustainable. Above, pedestrians walk past the New York Stock Exchange on June 10.
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