0503.HK Lansen Pharmaceutical HKSE +40.94% pre-market 24 Mar: Vol-led, +35.92%

0503.HK stock jumped 40.94% pre-market on 24 Mar 2026 to HKD 1.79, led by a heavy volume surge of 13,959,137 shares. The move pushed the price above the session open of HKD 1.46 and well above the previous close of HKD 1.27. Traders flagged the trade as a high-volume mover on the HKSE in Hong Kong, with relative volume near 29.29 times the average. We summarise what drove the move, the fundamentals behind Lansen Pharmaceutical Holdings Limited (0503.HK), and what the Meyka AI forecast implies for short- and medium-term traders.