Torchmark Corporation (NYSE: TMK) base in McKinney, Texas is an S&P 500 holding company that specializes in life insurance, supplemental health insurance and financial services. The Company was founded in Birmingham, Alabama where it was headquartered until 2006 and where it still maintains its largest operations. Its core company, Liberty National, was formed in 1900, and after an acquisition it formed Torchmark as a holding company in the late 1970s.