Siemens Energy AG (XETRA: ENR GR) is set to join Germany’s DAX Index, after a boom for renewable energy stocks boosted shares in the power company more than 40% since its spinoff from Siemens AG. Siemens Energy was spun off from DAX founding member Siemens AG, which still holds a 45% stake. Since then the stock has soared, gaining alongside other green-energy stocks amid Joe Biden’s victory in the U.S. election in November. Siemens Energy’s stocks are up 4% for 2021.