Sibanye Stillwater is trading at ZAc 4129.00, down 4.33%, with sector weakness the likeliest context. - South African metals and mining fell 6.23% over the past seven days; Sibanye Stillwater was down 7.1% over the same period. - No company-specific announcement dated September 28 was identified. The latest company news shown was UBS’s September 15 stake increase, which does not explain the drop.