The Dow fell 69.30, or 0.7%, to 9,974.45 last night.
It was the first close below 10,000 since February 8 when the Dow finished at 9,908.
The broader Standard & Poor’s 500 index fell 6.08, or 0.6%, to 1,067.95. The Nasdaq composite index closed down 15.07, or 0.7%, to 2,195.88.