China’s largest public company by market capitalization spent the equivalent of about $193 million to buy back 3.93 million shares on Tuesday.

The United States has labeled additional Chinese tech and social media firms as Beijing military companies, including multimedia firm Tencent and battery maker Contemporary Amperex Technology, better known as CATL.

Tencent’s shares plunged nearly 10 percent after it was designated a military company. The Chinese battery manufacturer CATL was also added to the list.