CLEARWATER, Fla.--(BUSINESS WIRE)-- #advantaira--Advanta IRA, a leading self-directed retirement plan administrator, has surpassed $4 billion in assets under custody (AUC), marking a major milestone for the company and the self-directed investing industry. Founded in 2003, Advanta IRA has spent more than two decades helping investors use self-directed retirement accounts to invest beyond traditional stocks, bonds, and mutual funds. The company recently expanded its capabilities with the launch o