The hedging results of Fannie Mae and Freddie Mac – including instruments bought to protect the value of agency MBS – had different results in the third quarter as interest rates unexpectedly declined and stayed low for several weeks. Overall, Fannie booked $2.6 billion of negative charges against the value of its derivatives in the third quarter while Freddie booked a much larger charge on its hedging activities: $4.2 billion. The differential did not pass...