Its Valencia theme park (aka Six Flags Magic Mountain) is one of the properties up for sale and Bloomberg News reports that the bids may fall short of what investors were looking for. You might recall that Dan Snyder, who owns the Washington Redskins, took over Six Flags with plans to cut the debt load and reverse a drop in the stock price. That might require $800 million, but the bids are said to be in the $650 million range. After the Bloomberg story moved this morning, the stock fell 3.07 percent, to close at $5.99. Not a great sign. The other parks on the block are in Seattle, Denver, Houston, Concord and Buffalo.