The Score is a weekly review of the biggest stock moves and the news that drove them. The U.S. may be getting closer to a transcontinental railroad. Railroad operator Union Pacific is holding talks to acquire its smaller rival Norfolk Southern, The Wall Street Journal reported Thursday.

Days after a White House meeting with President Donald Trump, Jensen Huang was being hailed by an audience on a stage in Beijing.

Nvidia said it has filed applications to resume selling H20 GPUs in China and has received assurances that licenses will be granted.

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Nvidia's valuation has risen dramatically over the last two years since generative artificial intelligence became a mainstream topic.

Jensen Huang, the chipmaker’s chief executive, is trying to balance his company’s interests as the United States and China compete for supremacy in artificial intelligence.

Nvidia CEO Jensen Huang said, during a trip to Beijing this week, that if he were a student today, he'd focus on the physical sciences.