Reliance Industries shares staged a historic 12% rally on Monday, offering a much-needed Diwali boost to shareholders of the heavyweight stock, which is still down more than 17% in 2026 so far. The sharp surge has raised hopes of a sustained recovery, with analysts seeing further upside potential on the back of several fundamental and technical factors.The Mukesh Ambani-led conglomerate's shares closed at Rs 1,300 apiece after its Q2 earnings impressed investors.