A rally in the stocks of companies controlled by Indian billionaire Gautam Adani has added almost $43 billion to his wealth this year, catapulting him to the spot of the second-richest person in Asia. Some analysts say the gains are fraught with risk. Adani’s net worth of $76.7 billion got a boost from a 330% jump in Adani Total Gas Ltd., a 235% rise in his conglomerate’s flagship Adani Enterprises Ltd. and a 263% increase in Adani Transmission Ltd. this year. Adani group stocks, especially these three, “look extended,” Bloomberg Intelligence analysts Gaurav Patankar and Nitin Chanduka wrote in a June 10 note after analysing technical indicators.