Morning Market Losers By: Benzinga via Benzinga April 08, 2014 at 09:46 AM EDT Gigamon (NYSE: GIMO) shares tumbled 28.63% to $18.70 after the company lowered its revenue outlook for the latest quarter. Gigamon ... Read More >> Related Stocks: Gilead Sciences Liveperson Inc Nordic American Tanker Shipping Ltd Ohr Pharmceutial