It’s remarkable what a little money can do. Faced with a declining reserve base and a government mandate to increase domestic production, PetroChina went on a spending splurge last year. Its 256 billion yuan ($38 billion) in capital expenditures in 2018 was more than was spent by BP Plc, Chevron Corp. and ConocoPhillips put together. It was also about 10 ...

Tougher times are ahead for the technology industry. A downturn sparked by excess inventories and weakened demand, signs of which were evident back in August, could drag on longer than expected. Samsung Electronics Co. said that first-quarter results will fall short of estimates. The rare profit warning came about a fortnight before the company was scheduled to give preliminary sales ...

Tesla Inc.’s stock price has sunk below $260 for the first time since late October. What does that mean? Trying to discern meaning in the particular set of numbers next to the TSLA ticker on any given day is often futile. With a little context, however, that $260 level takes on some interesting dimensions. Most notably, it takes the stock ...