Providian Financial Corporation was one of the leading credit card issuers in the United States when it was sold to Washington Mutual for approximately US$6.5 billion in October 2005. Providian was headquartered in San Francisco, California, and had more than 10 million card holders at the time of its sale. Washington Mutual, Inc., continued to run the company as a wholly owned subsidiary, out of its San Francisco headquarters. At its peak, the company employed approximately 13,000 people nationwide. Providian had significant operations in California, New Hampshire, and Texas.