The lost value calculation should start with the number $436.1 billion. This is the Intrinsic Value of both companies businesses including the JPS, the estimated value of Fannie and Freddie.
$402.9 billion earnings power plus $33.2 billion JPS = $436.1 billion.
Fannie Mae EARNINGS POWER OF THE BUSINESS $263 Billion Intrinsic Value
Freddie Mac EARNINGS POWER OF THE BUSINESS $139.9 Billion Intrinsic Value
Fannie Mae JPS $19.1 billion par value Freddie Mac JPS $14.1 billion par value
The amount of $402.9 billion is the calculated Intrinsic Value of the Earnings Power of both businesses combined using a Price to Earnings Ratio of 14.