The German share price index DAX graph is pictured at the stock exchange in Frankfurt, Germany, November 26, 2020. REUTERS/Staff

The German share price index DAX graph is pictured at the stock exchange in Frankfurt, Germany, November 25, 2020. REUTERS/Staff

The German share price index DAX graph is pictured at the stock exchange in Frankfurt, Germany, November 24, 2020. REUTERS/Staff

The German share price index DAX graph is pictured at the stock exchange in Frankfurt, Germany, November 23, 2020. REUTERS/Staff

The German share price index DAX graph is pictured at the stock exchange in Frankfurt, Germany, November 20, 2020. REUTERS/Staff

The German share price index DAX graph is pictured at the stock exchange in Frankfurt, Germany, November 19, 2020. REUTERS/Staff

A representation of virtual currency Bitcoin is seen in front of a stock graph in this illustration taken November 19, 2020. REUTERS/Dado Ruvic/Illustration

A representation of virtual currency Bitcoin is seen in front of a stock graph in this illustration taken November 19, 2020. REUTERS/Dado Ruvic/Illustration

A representation of virtual currency Bitcoin is seen in front of a stock graph in this illustration taken November 19, 2020. REUTERS/Dado Ruvic/Illustration

The German share price index DAX graph is pictured at the stock exchange in Frankfurt, Germany, November 18, 2020. REUTERS/Staff

The German share price index DAX graph is pictured at the stock exchange in Frankfurt, Germany, November 17, 2020. REUTERS/Staff

The German share price index DAX graph is pictured at the stock exchange in Frankfurt, Germany, November 13, 2020. REUTERS/Staff

The German share price index DAX graph is pictured at the stock exchange in Frankfurt, Germany, November 11, 2020. REUTERS/Staff

The German share price index DAX graph is pictured at the stock exchange in Frankfurt, Germany, November 10, 2020. REUTERS/Staff

The German share price index DAX graph is pictured at the stock exchange in Frankfurt, Germany, November 9, 2020. REUTERS/Staff

The German share price index DAX graph is pictured at the stock exchange in Frankfurt, Germany, November 9, 2020. REUTERS/Staff

The German share price index DAX graph is pictured at the stock exchange in Frankfurt, Germany, November 6, 2020. REUTERS/Staff

The German share price index DAX graph is pictured at the stock exchange in Frankfurt, Germany, November 5, 2020. REUTERS/Staff

The German share price index DAX graph is pictured at the stock exchange in Frankfurt, Germany, November 4, 2020. REUTERS/Staff

The German share price index DAX graph is pictured at the stock exchange in Frankfurt, Germany, November 3, 2020. REUTERS/Staff

The German share price index DAX graph is pictured at the stock exchange in Frankfurt, Germany, November 2, 2020. REUTERS/Staff

A man wearing a protective face mask walks past a screen displaying a graph showing recent Nikkei share average outside a brokerage, amid the coronavirus disease (COVID-19) outbreak, in Tokyo, Japan November 2, 2020. REUTERS/Issei Kato

The German share price index DAX graph is pictured at the stock exchange in Frankfurt, Germany, October 30, 2020. REUTERS/Staff

The German share price index DAX graph is pictured at the stock exchange in Frankfurt, Germany, October 29, 2020. REUTERS/Staff

The German share price index DAX graph is pictured at the stock exchange in Frankfurt, Germany, October 27, 2020. REUTERS/Staff

The German share price index DAX graph is pictured at the stock exchange in Frankfurt, Germany, October 26, 2020. REUTERS/Staff

The German share price index DAX graph is pictured at the stock exchange in Frankfurt, Germany, October 23, 2020. REUTERS/Staff

The German share price index DAX graph is pictured at the stock exchange in Frankfurt, Germany, October 22, 2020. REUTERS/Staff

The German share price index DAX graph is pictured at the stock exchange in Frankfurt, Germany, October 21, 2020. REUTERS/Staff

The German share price index DAX graph is pictured at the stock exchange in Frankfurt, Germany, October 20, 2020. REUTERS/Staff

The German share price index DAX graph is pictured at the stock exchange in Frankfurt, Germany, October 19, 2020. REUTERS/Staff

The German share price index DAX graph is pictured at the stock exchange in Frankfurt, Germany, October 16, 2020. REUTERS/Staff

The German share price index DAX graph is pictured at the stock exchange in Frankfurt, Germany, October 15, 2020. REUTERS/Staff

The German share price index DAX graph is pictured at the stock exchange in Frankfurt, Germany, October 14, 2020. REUTERS/Staff

The German share price index DAX graph is pictured at the stock exchange in Frankfurt, Germany, October 13, 2020. REUTERS/Staff

The German share price index DAX graph is pictured at the stock exchange in Frankfurt, Germany, October 12, 2020. REUTERS/Staff

The Allegro logo is seen on a smartphone in front of a displayed stock graph in this illustration taken October 12, 2020. REUTERS/Dado Ruvic/Illustration

The Allegro logo is seen on a smartphone in front of a displayed stock graph in this illustration taken October 12, 2020. REUTERS/Dado Ruvic/Illustration

Allegro logo is seen on a smartphone in front of a displayed stock graph in this illustration taken October 12, 2020. REUTERS/Dado Ruvic/Illustration

The German share price index DAX graph is pictured at the stock exchange in Frankfurt, Germany, October 9, 2020. REUTERS/Staff

The German share price index DAX graph is pictured at the stock exchange in Frankfurt, Germany, October 6, 2020. REUTERS/Staff

The German share price index DAX graph is pictured at the stock exchange in Frankfurt, Germany, October 2, 2020. REUTERS/Staff

The German share price index DAX graph is pictured at the stock exchange in Frankfurt, Germany, October 2, 2020. REUTERS/Staff

The German share price index DAX graph is pictured at the stock exchange in Frankfurt, Germany, October 1, 2020. REUTERS/Staff

The German share price index DAX graph is pictured at the stock exchange in Frankfurt, Germany, October 1, 2020. REUTERS/Staff

The German share price index DAX graph is pictured at the stock exchange in Frankfurt, Germany, September 30, 2020. REUTERS/Staff

The German share price index DAX graph is pictured at the stock exchange in Frankfurt, Germany, September 30, 2020. REUTERS/Staff

The German share price index DAX graph is pictured at the stock exchange in Frankfurt, Germany, September 28, 2020. REUTERS/Staff

The German share price index DAX graph is pictured at the stock exchange in Frankfurt, Germany, September 25, 2020. REUTERS/Staff

The German share price index DAX graph is pictured at the stock exchange in Frankfurt, Germany, September 24, 2020. REUTERS/Staff

The German share price index DAX graph is pictured at the stock exchange in Frankfurt, Germany, September 23, 2020. REUTERS/Staff

The German share price index DAX graph is pictured at the stock exchange in Frankfurt, Germany, September 22, 2020. REUTERS/Staff

The German share price index DAX graph is pictured at the stock exchange in Frankfurt, Germany, September 21, 2020. REUTERS/Staff

The German share price index DAX graph is pictured at the stock exchange in Frankfurt, Germany, September 18, 2020. REUTERS/Staff

The German share price index DAX graph is pictured at the stock exchange in Frankfurt, Germany, September 17, 2020. REUTERS/Staff

Austria's Health Minister Rudolf Anschober points at a graph during an address the media as the coronavirus disease (COVID-19) outbreak continues in Vienna, Austria September 17, 2020. REUTERS/Leonhard Foeger

Austria's Health Minister Rudolf Anschober points at a graph during an address the media as the coronavirus disease (COVID-19) outbreak continues in Vienna, Austria September 17, 2020. REUTERS/Leonhard Foeger

The German share price index DAX graph is pictured at the stock exchange in Frankfurt, Germany, September 17, 2020. REUTERS/Staff

The German share price index DAX graph is pictured at the stock exchange in Frankfurt, Germany, September 16, 2020. REUTERS/Staff

The German share price index DAX graph is pictured at the stock exchange in Frankfurt, Germany, September 15, 2020. REUTERS/Staff