Hong Kong Stock Plunges 90% After Chairwoman Detained by Chinese Police https://finance.yahoo.com/news/hong-kong-stock-plunges-90-025608293.html Lo is also chairwoman of Jiangsu Boxin Investing & Holdings Co., which slumped by the 10% daily limit in the morning and then rose to close up by the 10% limit in Shanghai, where it was one of the 40 most-traded stocks, despite having a market value of just 3 billion yuan ($435 million). A court in Jiangsu province has frozen Lo’s holdings in Jiangsu Boxin -- about 65 million shares, or a 28.4% stake -- for three years from July 1, the company said in a separate statement to the Shanghai Stock exchange last week.