Why Is Tarena International (TCTM) Stock Down 10% Today?

Group 1 - Tarena International changed its stock ticker from TEDU to TCTM and moved from the Nasdaq Global Market to the Nasdaq Capital Markets [1] - The CEO of Tarena International, Ying Sun, emphasized the company's commitment to enhancing course offerings and services during the ticker change announcement [1] - Following the ticker change, TCTM stock experienced a 20.3% increase in value during normal trading hours, with approximately 1 million shares traded [2] Group 2 - On the morning after the ticker change, TCTM stock fell by 10.3%, with around 6,000 shares changing hands, compared to a daily average trading volume of about 27,000 shares [2]