On Thursday, shares of Kernex Microsystems (India) Ltd hit a 5% upper circuit to ₹1,129.80 from ₹1,076. The stock’s 52-week range is ₹625.55–₹1,584. Trading volume rose 2.6 times on BSE. The firm formed a JV with VRRC to upgrade Kavach 3.2 to 4.0 on South Central Railway. Earlier, it won a ₹209.82 crore DFCCIL contract covering 931 km.