Churning

What Is Churning?

Churning is the practice of a broker buying and selling securities in a client's account frequently, mainly to earn commission income, rather than to meet the client's investment objectives. The trades may look active on a statement, but they are driven by the broker's compensation instead of a sound reason for the client.

Because most trades generate a commission, a broker who churns an account can earn money even when the client's portfolio stalls or loses value. Churning is generally treated as misconduct because it conflicts with a broker's duty to act in the client's best interest.

How Churning Works

Churning often depends on the broker having control over trading decisions, typically through a discretionary account, where the client has authorized the broker to place trades without approval for each one. Regulators look at whether trading frequency is excessive relative to the client's goals, financial situation and risk tolerance.

Common warning signs include:

• Trading volume that is high compared with the size of the account
• Frequent switching between similar holdings
• Trading costs that consume a large share of the account's value
• Trades the client was never told the reasons for

Costs are central to the analysis. Measures such as the turnover ratio and expense ratio help show how much trading is happening and what it costs. Each trade may also involve a bid-ask spread, which adds to the total cost of trading.

Why It Matters to Investors

Churning can quietly erode returns. Even when individual trades seem reasonable, cumulative costs can drag down performance, especially compared with a buy-and-hold strategy. Investors who review trade confirmations and account statements can spot unusual activity and ask their broker to explain the reasons behind trades. Brokerage firms and regulators monitor for churning, and clients who believe they have been affected can raise concerns with the firm or a regulator.