ToplineShares of ASML—Europe’s most valuable tech company and maker of the world’s most advanced chip-making machines—slumped more than 6% early Wednesday following reports that President Joe Biden may be mulling even harsher trade restrictions to further limit China’s ability to manufacture powerful semiconductors.ASML stocks tanked on Wednesday amid reports of more curbs on sales to China.NurPhoto via Getty Images Key FactsAccording to Bloomberg, the Biden administration has floated the idea of using an e ...