The freight futures in Shanghai experienced a wild ride over the past two trading sessions, with a spike at the open yesterday followed by a retreat over the past two days, apparently finding a short-term bottom this afternoon. The spike yesterday was driven primarily by short covering, as open interest has hardly changed. Then Maersk offered $1,400 per FEU for shipment leaving at the first week of October, which gave short sellers added conviction. The short sellers returned today and added ano