Reliance Industries Chairman Mukesh Ambani was present on stage along with his wife Nita Ambani and son Anant Ambani during the oath-taking ceremony of Maharashtra Chief Minister Uddhav Thackeray on Thursday. Aditya Birla Group Chairman Kumar Mangalam Birla also attended the event. Uddhav is the first member of the Thackeray family and third Shiv Sena leader to occupy the post.