As more firms contemplate issuing jumbo MBS, there are growing concerns that there could be a few speed bumps along the way, namely rising whole loan prices, and an increase in the cost of money for investors that use swaps to fund their purchases of the AAA-rated tranches. The increase in whole loan prices is less of a concern, because it was somewhat anticipated given the “hot” nature of the market. Over the past few months, prices for jumbo whole loans have risen to as high as 103, compared to 101 and 102 last year. Craig Cole, a jumbo consultant and a former top production manager at Union Bank, San Francisco, told...