The Nasdaq composite hit an all-time high on Thursday as dealmaking activity lifted technology and media shares. The tech-heavy Nasdaq rose 0.8 percent with Facebook, Netflix and Alphabet among the best-performing stocks. The S&P 500 also traded higher, climbing 0.3 percent. Shares of Twenty-First Century Fox rose 1.8 percent after NBCUniversal-parent Comcast announced a bid to buy several major units of the media giant for $65 billion. Comcast`s bid tops Disney`s, which agreed to a $52.4 billion deal. Comcast shares rose 3.8 percent while Disney gained 1.9 percent.