FINRA’s Reid & Rudiger Case Highlights the Risks of Excessive Trading Under Regulation Best Interest

FINRA’s Reid & Rudiger Case Highlights the Risks of Excessive Trading Under Regulation Best Interest

FINRA’s June 2026 enforcement action against Reid & Rudiger LLC and several of its principals is a stark reminder that excessive trading remains a major regulatory priority, particularly when high-cost recommendations are made to retail customers under Regulation Best Interest.

According to FINRA’s order, Reid & Rudiger operated a retail brokerage business that recommended a high-volume, high-cost market-timing strategy to customers over a period of several years. The strategy involved repeatedly buying large equity positions, often on margin, and then selling those positions after relatively short holding periods to fund purchases of different stocks. FINRA found that the strategy generated substantial commissions, markups, markdowns, service charges, and margin interest for the firm while making it extremely difficult for customers to earn a profit.

The sanctions were severe. Reid & Rudiger was expelled from FINRA membership. Edward J. Rudiger Jr. and Clifford R. Reid were barred from association with any FINRA member in all capacities. Two supervisory principals, Marc Harrison and Kelli A. Mezzatesta, received three-month principal-capacity suspensions, fines, and continuing education undertakings.

Excessive Trading and Reg BI

The core of the action was FINRA’s finding that the firm and its representatives recommended a series of transactions that were excessive when viewed together. FINRA alleged that Rudiger recommended the strategy in at least 15 customer accounts from February 2018 through October 2023, and that Reid recommended the same type of strategy in at least five customer accounts from February 2022 through October 2023.

The numbers were significant. FINRA found that the 15 Rudiger accounts had annualized turnover rates ranging from 6.92 to 17.33 and annualized cost-to-equity ratios ranging from 34.85% to 111.59%. Those accounts allegedly incurred about $2 million in trading losses and more than $2 million in total costs. The five Reid accounts had annualized turnover rates ranging from 8.46 to 16.76 and cost-to-equity ratios ranging from 46.52% to 73.95%, with approximately $700,000 in combined trading losses.

These metrics are important because they help show whether an account is being traded too frequently or too expensively. A turnover rate measures how often securities in an account are bought and sold. A cost-to-equity ratio, sometimes called a break-even ratio, measures how much an account must appreciate just to cover trading costs. For example, if an account has a 40% annualized cost-to-equity ratio, the account must earn 40% just to break even before the customer sees any net profit. When cost-to-equity ratios and turnover rates are high, they can indicate that a customer account is being traded too aggressively, especially if the trading costs consume any realistic chance of profit.

Under Reg BI, brokers making recommendations to retail customers must act in the customer’s best interest and cannot place their own financial interest ahead of the customer’s. FINRA found that, after Reg BI took effect on June 30, 2020, the representatives failed to exercise reasonable diligence, care, and skill to determine whether the recommended series of transactions was excessive and in the customers’ best interests.

How the Alleged Churning and Excessive Trading Worked

FINRA’s order describes a trading pattern that was highly profitable for the firm and brokers but allegedly harmful to customers. The representatives recommended that customers buy large equity positions, frequently using margin. After relatively short holding periods, the representatives allegedly recommended selling those positions and replacing them with different stocks. This repeated cycle of buying, selling, and replacing positions generated transaction-based compensation each time a trade occurred.

The underhanded aspect of the alleged conduct was not limited to the number of trades. FINRA focused on the way costs accumulated and how those costs were presented. The firm allegedly charged commissions or markups and markdowns generally between 2% and 4% on both purchases and sales. In addition, the firm charged a $99 “service charge” on most trades.

That $99 charge was especially notable. According to FINRA, the firm’s own written supervisory procedures referred to the charge as a “minimum transaction commission,” but customer trade confirmations labeled it as a “service charge.” FINRA also noted that, years earlier, the SEC had informed the firm that the charge appeared excessive and unreasonable in relation to the services provided and appeared to be another form of commission revenue. Rather than eliminating the charge or clearly describing it as a commission, the firm allegedly changed the label from a handling fee to a service charge.

This type of charge can be particularly problematic for investors because it may obscure the true cost of trading. A customer reviewing a confirmation might see a $99 “service charge” and believe that was the primary transaction cost, while the account may also have been charged substantial commissions, markups, markdowns, and margin interest. FINRA found that at least two customers believed the $99 charge represented the total commission on each trade rather than an additional charge imposed on top of other transaction costs.

The result, according to FINRA, was that customers were placed in strategies where the costs were so high that profitability became virtually impossible. The alleged misconduct was not simply that the customers lost money in the market. The larger problem was that the repeated trading, commissions, markups, markdowns, service charges, and margin interest allegedly created a cost structure that made the strategy unsuitable or inconsistent with the customers’ best interests from the outset.

Why Cost-to-Equity and Turnover Are Critical in Churning Cases

Excessive trading and churning claims often depend on account-level metrics. Two of the most important are turnover rate and cost-to-equity ratio.

Turnover rate measures how frequently the securities in an account are replaced. A high turnover rate can suggest that the account is being traded aggressively, especially where the trades are solicited by the broker, and the customer routinely follows the broker’s recommendations.

Cost-to-equity ratio measures the amount the account must earn to cover trading costs. This is sometimes referred to as the break-even percentage. High cost-to-equity ratios are powerful evidence because they show how much the account must appreciate before the customer has any realistic chance to profit. If the account must earn 20% or more, just to break even, that is a serious red flag.

FINRA’s order also referenced common red-flag thresholds. FINRA described annualized cost-to-equity ratios above 20% and annualized turnover rates above six as indicia of potential excessive trading. In the Reid & Rudiger action, many of the accounts were far above those thresholds. Some accounts had cost-to-equity ratios exceeding 50%, 70%, 90%, and even 100%, with turnover rates well above six.

These metrics are particularly important under Reg BI because the standard focuses on whether a series of recommended transactions is in the retail customer’s best interest when viewed together. A broker cannot avoid responsibility by arguing that each individual trade could be justified in isolation if the overall trading pattern is excessive, too costly, or structured in a way that primarily benefits the broker.

Churning Allegations

FINRA also found churning in several customer accounts. Churning is a form of securities fraud that generally requires excessive trading, broker control over the account, and scienter, meaning an intent to defraud or reckless disregard of the customer’s interests.

FINRA alleged that customers routinely followed the brokers’ recommendations and that approximately 98% of transactions in certain accounts were solicited. FINRA found that Rudiger and Reid exercised de facto control over certain customer accounts, generated substantial commissions, and acted with intent to defraud or reckless disregard of customer interests.

The churning findings are significant because they elevated the action beyond ordinary suitability or supervisory failures. FINRA found willful violations of Section 10(b) of the Securities Exchange Act, Rule 10b-5, Regulation Best Interest, and FINRA Rules 2020, 2111, and 2010.

Supervisory Failures: Red Flags That Were Missed

The order also provides a roadmap of what regulators expect from brokerage firms supervising for excessive trading.

FINRA found that Reid & Rudiger’s written supervisory procedures referenced turnover rate and cost-to-equity ratio, but did not explain how to calculate or obtain those metrics, what thresholds should trigger concern, how supervisors should investigate red flags, or how the firm should respond to potential excessive trading or churning.

FINRA also found that the firm relied on manual reviews and did not use available exception reports that could have shown cost-to-equity ratios and turnover rates. This was especially problematic because FINRA had previously issued a 2018 exam report identifying deficiencies in the firm’s supervision of excessive trading, including the failure to use exception reports or other tools to detect problematic trading patterns over time.

According to the order, supervisors failed to identify or investigate accounts with annualized cost-to-equity ratios above 20% and annualized turnover rates above six, both of which FINRA described as indicia of potential excessive trading. FINRA found that those failures allowed the misconduct to continue.

Key Takeaways for Investors

This enforcement action offers several important lessons for investors.

First, investors should pay attention to the frequency of trading in their accounts. Frequent buying and selling can generate costs that are not always obvious from a single trade confirmation.

Second, investors should ask what they are paying in total. Commissions, markups, markdowns, service charges, and margin interest can add up quickly. Even if each individual charge appears modest, the cumulative cost may make the strategy unsuitable or inconsistent with the investor’s best interest.

Third, investors should be cautious when a broker repeatedly recommends selling one position to buy another after short holding periods. A pattern of “in-and-out” trading can be a warning sign, particularly when the broker is compensated on each transaction.

Fourth, investors should not assume that aggressive or speculative investment objectives give a broker unlimited discretion to trade heavily. FINRA emphasized that even customers listed as speculative or willing to accept high risk did not agree to a strategy where high costs made profitability unlikely.

Key Takeaways for Firms and Supervisors

For firms, the message is equally clear. A supervisory system for excessive trading cannot rely only on trade-by-trade review. Supervisors must be able to evaluate account activity over time.

That means firms should have procedures that explain how to identify excessive trading, including how to calculate or obtain turnover rates and cost-to-equity ratios. Firms should also establish meaningful thresholds, use exception reports or surveillance tools, document investigations, and take action when red flags appear.

Reg BI also raises the stakes for retail customer recommendations. Firms must have written policies and procedures reasonably designed to achieve compliance with Reg BI, including the Care Obligation. When representatives recommend a series of transactions, the firm must be able to assess whether the recommendations are excessive when taken together.

Investor Recovery and FINRA Arbitration

Investors who suffered losses from excessive trading, churning, unsuitable investment recommendations, or violations of Regulation Best Interest may have claims against their brokerage firm or financial advisor. These claims are often brought in FINRA arbitration and may involve allegations of churning, excessive commissions, unauthorized or unsuitable trading, breach of fiduciary duty, negligence, failure to supervise, misrepresentation, omission of material facts, and violations of securities industry rules and standards.

AMW Law represents investors in securities arbitration and investment loss recovery claims against brokerage firms and financial advisors. Our law firm helps clients evaluate account statements, trading history, commissions, margin interest, cost-to-equity ratios, turnover rates, and other evidence that may show excessive trading or broker misconduct.

If you believe your account was excessively traded or that your broker placed his or her interests ahead of yours, you should consider speaking with an experienced FINRA arbitration attorney.

Bottom Line

FINRA’s Reid & Rudiger action is a forceful reminder that excessive trading is not just a legacy suitability issue. Under Regulation Best Interest, firms and brokers must evaluate whether a series of recommended transactions serves the customer’s interests or instead primarily benefits the broker through commissions and trading revenue.

For investors, the action underscores the importance of reviewing account statements, asking about total trading costs, and questioning frequent recommendations to buy and sell. For firms, it highlights the need for surveillance systems that detect excessive trading patterns before customer harm becomes widespread.