The Dow Jones industrial average fell 41 points, or 0.2 per cent, to close at 17,071 Monday. The Dow had been down as much as 178 points earlier.
The Standard & Poor's 500 index fell five points, or 0.3 per cent, to 1,977. The Nasdaq composite fell six points, or 0.1 per cent, to 4,505.
Investors were nervous about the latest geopolitical unrest, this time in Hong Kong as police clashed with protestors demanding democratic reforms in the former British colony.
DreamWorks Animation soared 26 per cent after media reports suggested the animation studio is in discussions with Japan's SoftBank about a possible deal.
Bond prices rose. The yield on the 10-year Treasury note fell to 2.49 per cent.