Prudential Financial Inc reported that it expects a third-quarter charge on its exposure to Lehman Brothers as well as possibly another charge related to American International Group. Prudential reported on Wednesday that it expects its charge on roughly $117 million of Lehman Brothers fixed-income securities, which have loss nearly two-thirds of their value. It also has $90 million in exposure to derivatives trading related to Lehman Brothers. Additionally, it may need to take a charge on the $195 million of AIG fixed-income securities, which have lost nearly 57 percent of their value.