Subex Ltd hit the 4.95 percent upper circuit at ₹12.72 after turning profitable in Q1FY26. Revenue fell 7.04 percent QoQ and 2.94 percent YoY to ₹66 crore, while net profit swung to ₹13 crore from losses in both periods. The company secured new Tier-1 contracts and is embedding AI into its service portfolio.