As of 12 pm, the Nasdaq Composite is down .83% on the day, after starting the trading day down 5%, then swinging to up +4% as rumors circulate on possible tariff delays. Despite Trump’s White ...

Then Friday was even worse. Between the two days, the market dropped 10.5%. The Nasdaq Composite is now in a bear market, and the Russell 2000 is down nearly 25% from recent highs. So ...

Department of Mechanical Engineering, Beijing Technology and Business University, Beijing 100048, P. R. China Department of Mechanical Engineering, Tsinghua University, Beijing 100084, P. R. China ...