Washington Mutual, known as WaMu, was one of the largest banks in the United States, before it was placed into receivership by the US Government. WaMu's mortgage division was also one of the biggest around. JP Morgan Chase bought the holdings of WaMu, including Washington Mutual Mortgage.
Before its demise, Washington Mutual was the sixth largest bank in the US, with assets of over $300 Billion. Washington Mutual's mortgage losses in the sub-prime market played a large part in the collapse of the company.
WaMu offered a wide range of products and had grown into one of the largest loan originators in the US, before it collapsed