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In an exclusive interview with Insider, Ray Dalio said he expects a period of weak returns in stocks.
He said low interest rates are fueling a bubble that will eventually burst.
Major Wall Street banks are bullish on the direction of equity markets, however.
With the Federal Reserve pinning down interest rates, return-hungry investors have turned to stocks for the income bonds would have provided in a different era. But with all of this appreciation in stocks, little upside potential remains, according to legendary investor Ray Dalio.