By Bansari Mayur Kamdar and Noel Randewich (Reuters) – The Nasdaq ended sharply higher on Monday, with growth stocks staging a late-day rally after Twitter agreed to be bought by billionaire Elon Musk. Twitter surged after announcing it would be bought by Musk in a deal that will shift control of the social media giant to the world’s richest person. The S&P 500 traded in negative territory for much of the session but extended gains after Twitter’s announcement. “I think it’s just a confidence thing that, hey, there are still people that are willing to pay ridiculous valuations for some compani…