IndyMac reported that during April 2008, Moody's and Standard & Poor's downgraded the ratings on a significant number of Mortgage-backed security (MBS) bonds including $160 million of those issued by IndyMac and which the bank retained in its MBS portfolio.
What was the value of IndyMac's MBS bonds retained in its MBS portfolio that were downgraded in April 2008?
$160 million