New York (CNN Business) The Dow snapped a three-day winning streak and finished 173 points lower on Tuesday.

Dow INDU S&P 500 SPX Nasdaq Composite COMP The drop follows a week and a half of turbulent trading. Theclosed 0.7% lower, while thefell 0.8% and thedeclined 0.7%.

With news about trade wars, recessions and economic stimulus abating for the time being, investors are now waiting for Federal Reserve Chairman Jerome Powell's speech at Jackson Hole on Friday to see if he can help boost the market again.

Investors will watch Powell's speech closely Friday morning for signs of further interest rate cuts and his assessment of the US economy.

Expectations for a September rate cut are at 100%, with a 95% chance for a quarter percentage point cut, according to the CME FedWatch tool. That's up from 90% at the start of the day. Although these high expectations suggest another rate cut is already priced in, stocks could rally if Powell sounds dovish on Friday.

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