Private mortgage insurer PMI Group Inc. circled the wagons last week when it initiated voluntary Chapter 11 bankruptcy protection to “protect stakeholders” as state regulators move to appoint a receiver for the company’s mortgage insurance unit. Headquartered in Walnut Creek, CA, but incorporated in Arizona, the Nov. 23 move to file for bankruptcy protection came one day after a Maricopa County judge rejected PMI Group’s bid to overturn the Arizona Department of Insurance’s seizure of its main unit, PMI Mortgage Insurance Co., in October. As part of the process to...