“Founded more than three decades ago by a former appliance-factory worker with a high school education and less than $10,000 of borrowed cash, Sunny Optical is now a $22 billion behemoth that supplies lenses to the likes of Samsung and Xiaomi. Growing demand for cameras in smartphones, cars and drones fueled a decade-long streak of rising profits at the company, helping propel the shares’ dizzying rally.” But in this case, the beneficiaries of the rally didn’t just include founders and key C-suite personnel. Bloomberg on The 9,500% Stock Surge That Turned Janitors Into Millionaires in China.