Thousands of Siemens workers and trade unionists protested plans to slash 3,450 jobs and close three German production sites in its gas-turbine division.
German software giant SAP expects a stagnant fourth quarter and improvements in 2018 after third-quarter losses in the competitive cloud business.
Former Bertelsmann and Arcandor CEO Thomas Middlehoff has been released from prison. In 2014, he was sentenced to three years for embezzlement and tax evasion.
Construction permits for dwellings in Germany fell by 19,500 or 7% in the first nine months of 2017, according to government figures. Development bank KfW cited a glut of residential projects.