Shares of Workhorse Group Inc. WKHS,
fell nearly 50% at the end of the trading session on Tuesday after news that Oshkosh Corp. OSK,
won a U.S. postal service contract worth billions. Shares of Oshkosh rose about 5% after a major rise in news. The contract calls on Oshkosh Defense to help modernize its postal service fleet with fuel-efficient hybrid vehicles. The contract requires the delivery of between 50,000 and 165,000 vehicles over a 10-year period, Oshkosh said.