Siemens is trading 3.13% down at €266.45, amid broader equity pressure following hotter-than-expected U.S. inflation readings. - September headline and core U.S. CPI both exceeded forecasts, prompting interest-rate concerns. - Industrials were down 1.58%; no clear Siemens-specific announcement explaining the decline surfaced. - IBM's October 14 research collaboration concerned nanostack transistor development; available reporting does not link it to Siemens' share-price drop.