Wall Street was mixed as investors awaited Friday's nonfarm payrolls report to gauge the timing of a Federal Reserve interest rate hike.
Oil stockpiles fall more than expected and Monsanto posts a surprise fourth quarter profit.
Stocks on Wall Street fall as IMF dowgrades outlook for US economy.
Wall Street falls after Friday's rally caps the best the best quarter for stocks this year.
Dow falls 167 points ahead of the first televised debate between candidates Hillary Clinton and Donald Trump.
Traders see only a 22% chance of a US Federal Reserve hike tomorrow.
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