Related Clues:

• Buffett's insurer
• Big name in health plans
• Vulcano in Italia
• HMO offerer
• Healthcare giant in the S&P 500
• Cigna competitor
• Hartford-based Fortune 100 company
• Fortune 100 insurer
• Insurer in the Fortune 500
• Anthem alternative
• Company advertised with the slogan 'So easy a caveman can do it'
• Insurance company named after a volcano, but with an extra letter added for *dramatic* effect
• Humana buyer in 2015
• Fortune 100 company whose name starts with a silent letter
• Progressive competitor