It was a long day for the U.S. stock market on Thursday.
The Dow Jones Industrial Average closed down by 2,600 points or 1.1%, to 16,957.83.
The S&P 500, which measures the performance of about 1,300 companies, closed down 0.4% to 2,742.24.
The Nasdaq Composite index of 100 companies closed down 1.2% to 4,636.03.
The Standard & Poors index of small-cap stocks closed down 3.1% to 5,972.69.
The Dow and S&P 500 both closed below their intraday highs, with the Dow trading 0.5% higher at 21,054.63 and the S&p 500 0.9% lower at 1,823.97.
The index of large-cap companies was flat, with both the S & ;P & t&% and the Dow & p&t% down at their intrasday highs.
For the third consecutive day, the Dow is down for a third straight session.
That means the market has lost 7.9 million points or 9.4%.
The S &s share index of the S.& ; P. stocks is up 6.9%, and the Nasdaq has gained 4.9%.
The Dow is up just 0.7% in the past month.
The Nasdaq, on the other hand, is up 9.5%.
That means it is up 17% over the past 12 months.
That is the biggest gain in the S P& t% index.
The Index of International Financial Markets has gained more than 8% over that same period.
The U.K. also gained today, with a 0.6% rise in the pound, as the pound strengthened on the Brexit vote.