Summit Alliance Companies Summit Alliance Financial is a 50 year old Life Insurance and Annuity brokerage general agency that maintains outstanding relationships with over 20 life insurance carriers in the industry. We are experts in Large Case Underwriting, Advanced Planning, and Comprehensive Case Management. Argentus Partners is an Investment Management and research firm. Our success depends on helping financial advisors manage and grow their clients' assets. Summit Alliance Insurance Advisors is a Property, Auto, Home, and Commercial insurance agency with the customer in mind. We have relationships with dozens of insurance companies, allowing you to get the right price with the right service.