Despite criticism that the portable mortgage product, which was recently introduced by E*TRADE Mortgage Corp., would have difficulty developing enough supply going forward, executives at the company believe that as lenders learn about this new offering, there could even be enough liquidity so that a secondary market is developed for the product.

"We looked at market conditions and the fact that we are at a 50-year low in rates," said Robert Bernabe, head of retail mortgage lending at E*TRADE Financial. "This product takes advantage of market conditions and is passing the benefits along to the customer."

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