<iframe width="580" height="385" src="https://www.youtube.com/embed/HA-U7eufziE?modestbranding=1" frameborder="0" allowfullscreen></iframe> <br>CNBC's Diana Olick joins 'The Exchange' to discuss the surge in supply of homes in the U.S. <br><a href="https://www.youtube.com/watch?v=HA-U7eufziE">source</a>