The PSI 20 index is down 0,28% to 4.127,97 points in Thursday's session.
Outside, Paris fell 1,11%, Frankfurt fell 1,39% and Madrid lost 129%.
Leading the losses is Novabase with a decrease of 2,05% to 3,34 euros, followed by Mota-Engil with a loss of 1,75% to 1,12 euros.
This is followed by CTT, which lost 1,30% to 2,27 euros, BCP which fell 1,03% to 0,08 euros and Galp which fell 0,99% to 7,78 euros.
On the earnings side, Ibersol leads with a rise of 8,81% to 4,20 euros, followed by Pharol with a gain of 1,79% to 0,10 euros.
This is followed by EDP Renováveis with a gain of 0,84% to 16,74 euros, and NOS which rises 0,07% to 3,04 euros.
Galp is the company with the most shares traded, with a value of more than 611 thousand. This is followed by EDP with 499 thousand shares, and Navigator with 174 thousand.
Today in the news, the second debate will take place in the United States, and the last, between Donald Trump and Joe Biden, the two candidates for the US presidential election.
Eurostat will release statistics this morning on the deficits and debts of eurozone countries in the second quarter and also on the second notification of excessive deficit procedures in 2019.
The European Commission will also release the first estimate of the consumer confidence indicator in the euro area, figures that refer to the month of October.
Wall Street closed yesterday in the 'red' at a time when investors expect news about the negotiations between the Democrats and the White House, that drag on despite the optimism shown by the president of the House of Representatives.
On Wall Street, the Dow Jones industrial index slid 0,35%, to 28.210,82 points, the financial S&P 500 lost 0,24%, to 3.434,72 points and the technological Nasdaq fell 0,28%, to 11.484,69 points. The Russell 2000 depreciated 1,11%, to 1.600,45 points.