Fresenius Medical Care is trading at $21.51 (-5.03%) after hours; the catalyst is unclear. - On October 5, the after-hours move followed a regular-session close of $22.65; the supplied price context is the basis for these figures. - No October 5 company announcement explaining the decline was found; the company newsroom’s latest listed release was dated September 25. - Major U.S. indices rose, so the provided market context does not indicate a same-direction broad-market explanation.