Stock Market Fluctuations: Winners and Losers

Export restrictions, patent disputes, and corporate decisions drive significant changes in stock values.

ASML Holding N.V. is facing export restrictions to China from the Dutch government on certain machines, causing its stock to fall.
Baidu Inc. terminated its plan to buy JOYY’s live-streaming operations in China, leading to a decrease in its stock value.
Tesla Inc. saw an increase in its fourth-quarter vehicle sales by almost 20% due to steep price cuts, resulting in a rise in its stock value.
Valaris Ltd. announced a multi-year contract with Petrobras offshore Brazil, causing its stock to rise.
Corcept Therapeutics Inc. lost a patent dispute involving its Cushing’s syndrome drug Korlym with Teva, leading to a decrease in its stock value.
PNM Resources Inc. saw a decrease in its stock value after Iberdrola’s Avangrid unit terminated its plan to buy the power company.
Johnson & Johnson declared a first-quarter dividend of $1.19 per share, causing its stock to rise.