Sembcorp Marine (S51.SI, SES) up 10.87% to S$2.55 on heavy volume: market closed, next signals

S51.SI stock led Singapore trading by volume as Sembcorp Marine Ltd (S51.SI) closed up 10.87% at S$2.55 on 23 Feb 2026. The move came on heavy turnover of 108,233,700 shares, well above the 50-day average of 33,092,120. Traders flagged a tight intraday range with a low of S$2.29 and a high of S$2.59. We summarise why the stock was most active on the SES, how fundamentals and flows connect to the jump, and which signals matter next for investors