Samsung Electronics is trading at $4866.00, down 3.07%, as investors take profits after strong preliminary quarterly results. - South Korean coverage also cites foreign and institutional selling; ETF rebalancing, options expiry and the end of share buybacks were flagged as potential sources of selling pressure. - The broader risk backdrop is weaker, while local selling and semiconductor-related supply-demand pressures are the clearest reported drivers. The supplied price context includes no volume data.