12 Biggest Mid-Day Losers For Friday By: Benzinga via Benzinga August 19, 2016 at 12:57 PM EDT StemCells Inc (NASDAQ: STEM) shares tumbled 18 percent to $1.36. StemCells shares have declined 67.83 percent over the ... Read More >> Related Stocks: AK Steel Holding Corp Canadian Solar Inc China Finance Online ADR Emerson Electric Estee Lauder Co Olympic Steel Inc Pentair plc Pure Storage Inc Sharkninja Inc Smartrent Inc United States Steel Corp