On Tuesday, shares of Authum Investment & Infrastructure Ltd surged to a 52-week high of ₹3,130. The board also declared a dividend record date. Additionally, Authum signed a pact to acquire 35.09% in Rivaara Labs for ₹36.56 crore, comprising ₹36 crore infusion in CCPS and ₹56.83 lakh for equity and CCPS purchase.