Siemens Energy is trading at €121.98, down 5.98%, amid investor concerns that tighter AI oversight could slow data-center investment and weigh on related infrastructure stocks. - No clear Siemens Energy-specific announcement explains the November 4 decline. - Energy shares also weakened as oil prices fell sharply after the U.S. midterm results and developments around Iran. This broader pressure may have contributed but does not establish a direct company-specific catalyst.