U.S. stock market early trading: Rare earth stocks and key mineral stocks rise broadly, airline stocks rise broadly, Ferrari falls about 13%

The Dow Jones rose by 0.1%, the S&P 500 index rose by 0.1%, and the Nasdaq rose by 0.04%. Akero Therapeutics rose by about 17% after Novo Nordisk spent $5.2 billion to acquire the company. Ferrari fell by about 13% due to the company's cautious earnings outlook triggering sell-offs. Rare earth stocks and key mineral stocks rose, with USA Rare Earth up by about 8%. Airline stocks generally rose, with Delta Air Lines up by about 8% and American Airlines up by about 5%