Losing money in the market is frustrating. Sometimes it is simply market risk. Other times, the losses may trace back to a broker’s recommendations, trading activity, disclosures, or supervision. That distinction often matters in FINRA arbitration, which is the main forum used to resolve disputes between investors and broker-dealers, according to the SEC’s investor bulletin on broker-dealer arbitration and FINRA’s arbitration materials.
If you are wondering whether your investment losses may be more than “just bad luck,” this post walks through the signs lawyers often evaluate first. In this post you’ll learn how FINRA arbitration generally works, what kinds of losses may point to broker misconduct, what documents tend to matter, and when timing issues can become important. For a broader overview of the process, it may help to start with this overview of investor-loss arbitration strategy.
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A FINRA arbitration claim is a dispute filed in FINRA’s dispute resolution forum against a brokerage firm, a registered representative, or both. The claim usually alleges that the investor suffered losses because of misconduct or rule violations tied to the account relationship. FINRA explains that a claim begins with a Statement of Claim, a Submission Agreement, and a filing fee. The Statement of Claim describes the dispute, identifies the parties, gives relevant dates, and states the relief requested, and FINRA notes that supporting documents may be attached at the time of filing in the claim-filing instructions.
This process is different from a court lawsuit in several ways. The case is decided by arbitrators instead of a judge or jury, discovery is more streamlined, and appeal rights are very limited, as the SEC investor bulletin explains. FINRA reports that customer disputes continue to make up a substantial share of its docket: in 2025, it recorded 1,643 customer filings, and in 2024 it recorded 1,594 customer filings, according to its 2025 dispute resolution statistics.
A drop in an account value, by itself, usually is not enough. Markets rise and fall. Even conservative portfolios can lose value during interest-rate shocks, credit events, recessions, or abrupt volatility.
The key question is often whether the losses appear connected to conduct, not just performance. In general terms, attorneys often look for signs that the account was handled in a way that did not fit the investor’s objectives, risk tolerance, age, liquidity needs, instructions, or account restrictions. The SEC and FINRA enforcement materials repeatedly identify patterns such as unsuitable recommendations, unauthorized trading, excessive trading, misleading omissions, and supervision failures as recurring sources of investor harm, including in SEC actions involving unsuitable recommendations and unauthorized trading and excessive trading strategies pushed on customers.
A practical way to think about it is this: if the account losses came after conduct that looked inconsistent with what you asked for, what you understood, or what your paperwork reflected, the losses may warrant a closer legal review.
One of the most common issues is unsuitable recommendations. That can involve speculative products in an account opened for income or capital preservation, concentrated bets that exposed the investor to more risk than expected, or a pattern of short-term trading in an account that was supposed to be long-term.
SEC materials note that suitability concerns are not limited to the product itself. The frequency of trading may also be unsuitable, especially when the activity does not fit the customer’s needs or financial situation, as reflected in SEC administrative decisions discussing unsuitable trading activity.
Questions that often come up include: