S51.SI +10.87% pre-market 17 Jan 2026 Sembcorp Marine (SES): 108.23M vol, watch

S51.SI stock opened the pre-market session sharply higher on 17 Jan 2026 after heavy trade. Sembcorp Marine Ltd (S51.SI) is trading at S$2.55, up 10.87%, with 108,233,700 shares changing hands by the pre-market print. The surge makes Sembcorp Marine a clear high-volume mover on the Singapore Exchange (SES). Traders should watch short-term resistance at S$2.59 and the 50-day average at S$2.09 for follow-through.