Shares of Amazon.com, Inc. AMZN rose 6.2% after the company announced that it will hire 75,000 more people amid a surge in demand for online orders.Shares of Qualstar Corporation QBAK plunged 19.1% after the company plans to delist from the NASDAQ and deregister its common stock.Shares of Fox Factory Holding Corp. FOXF dropped 14.9% after the company announced plans to temporarily suspend non-essential operations in some of its manufacturing facilities.Shares of Triumph Group, Inc. TGI slumped 14.2% after the company furloughed 2,300 employees across its plants in U.S. and Europe.Want the latest recommendations from Zacks Investment Research? Today, you can download 7 Best Stocks for the Next 30 Days. Click to get this free report Amazon.com, Inc. (AMZN): Free Stock Analysis Report Triumph Group, Inc. (TGI): Free Stock Analysis Report Fox Factory Holding Corp. (FOXF): Free Stock Analysis Report Qualstar Corporation (QBAK): Get Free Report To read this article on Zacks.com click here.