← Broker database 2025-08-11
Mack Leon Miller Suspended for Excessive Trading in Senior Customer Accounts
According to FINRA, Mack Leon Miller was suspended for nine months for willfully violating Regulation Best Interest by recommending excessive and unsuitable trades to two senior customers. No monetary sanctions were imposed due to Miller's financial status.
Miller recommended a series of trades that were excessive, unsuitable, and not in the best interests of his two senior customers. The trading generated $32,230 in commissions for Miller while causing $71,022 in realized losses for the customers.
FINRA found that one of the customers relied on Miller's advice and routinely followed his recommendations. As a result, Miller exercised de facto control over that customer's account. De facto control exists when a customer follows a representative's recommendations so consistently that the representative effectively controls the account, even without formal discretionary authority.
The suspension was in effect from September 2, 2025, through June 1, 2026.
Excessive trading, also known as churning, occurs when a broker trades in a customer's account primarily to generate commissions rather than to benefit the customer. This practice violates the broker's obligation to act in the customer's best interest.
For investors, particularly seniors, this case highlights several warning signs. Watch for accounts with high turnover and frequent trading, commissions that seem disproportionate to account size, consistent losses despite active management, and situations where you simply follow your broker's recommendations without independent evaluation.
If you suspect your account has been excessively traded, review your statements for turnover ratios and total commissions paid. FINRA arbitration may be an option for recovery.