Penny Phillips re-platforms at skyrocketing, $25 billion, six-month startup, Hightower Signature, after $353 billion Hightower mothership acquired her firm in M&A spree RIABizHightower Signature Makes First External Acquisition With $5B RIA Journey Strategic Yahoo FinanceHightower’s “Signature” Division Grows With $5 Billion Firm Family Wealth Report