Commercial banks and savings institutions held a total of $1.528 trillion in residential MBS in portfolio as of the end of the second quarter, down 2.1 percent from the end of March, according to a new analysis and ranking by Inside MBS & ABS. Combined bank/thrift investment in MBS has been under steady pressure since the Federal Reserve resumed buying massive amounts of new agency MBS. The second-quarter decline brought the industry’s total MBS portfolio to its lowest point in two years. The one area where banks and thrifts have beefed up...[Includes two data charts]