The S&P 500 and Nasdaq are on track for their second straight positive week. Stocks marched higher yesterday, despite some wobbles earlier in the week. As we near the end of the US earnings season, here are the market’s top headlines. Nio’s battery is half empty?  Chinese electric car maker Nio (NIO) reported its fourth-quarter results after market close yesterday. Although Nio topped revenue estimates, the company’s fourth-quarter loss was wider than expected. Supply and production challenges, as well as the global chip shortage, weighed on Nio’s Q4 2021 sales. Vehicle sales for Q4 came in just 7% higher than Q3. Nio expects to deliver a total of 25,000 to 26,000 vehicles in Q1 2022, representing an increase of around 25% to 30% from the same quarter of 2021. Deliveries for the company’s luxury ET7 sedan are scheduled to start on 28 March. Meanwhile, ET5, a smaller version of...