Kimberly-Clark is trading at $100.52, 9.74% down in pre-market. * China's State Administration for Market Regulation (SAMR) recently initiated a Phase 2 antitrust review of Kimberly-Clark's $48.7 billion Kenvue acquisition, announced 'just last week'. * This unexpected in-depth review creates an obstacle, potentially delaying the merger and introducing significant volatility and risk regarding its completion. * The broader market is firmer, making these company-specific regulatory concerns the most likely explanation for the pre-market decline.