Suing Your Financial Advisor: Can You & How To

If you have suffered financial loss in your investment account, you may be wondering whether you can sue your broker or financial advisor. Yes, you can sue your broker or advisor. You have two options: filing an arbitration or filing a suit (though the latter is far rarer, as discussed below).

Many investors retain financial advisors and brokers to help them invest their hard-earned money. They rely on financial advisors and brokers to provide insight and investment guidance.

Unfortunately, there are instances where investors lose money due to the negligence or fraud of their financial advisors or brokers.

While many brokers and financial advisors will blame their clients’ losses on the markets, those excuses are too often mere fiction. When the promises that a rebounding market will restore the losses turn out

Our goal with this article is to provide you with much of the information you’ll need to decide whether to sue your broker or financial advisor. Let’s dive in.

The Differences Between Suing a Broker and an Investment Advisor

Investors who lose money due to misconduct by their broker or investment advisor may have grounds for a lawsuit, but there are significant differences between suing a broker versus an investment advisor. The primary difference is whether the advisor or broker follows the suitability/Reg BI or fiduciary standard.  That said, brokers registered with FINRA are subject to its rules of conduct and can be held liable for their violations of FINRA’s rules and regulations.  Investment advisors are not subject to FINRA’s rules but can be held liable under state or federal laws.

Suing a Brokerage Firm

Brokers most commonly work for large brokerage firms, so suing a broker will also often involve taking legal action against a powerful firm. These firms take negligence and fraud claims extremely seriously and employ teams of highly qualified investment advisor attorneys to fight FINRA arbitration claims. If you are considering taking legal action against a brokerage firm, you would be well served to employ your own experienced securities lawyer for what will be a time-consuming legal battle.

Investment advisors also often work for brokerage firms, Investment advisors also commonly work for insurance companies, banks, and wealth management firms. Filing a claim against one of these companies will also likely involve a legal battle against a team of experienced attorneys who specialize in fighting fraud and negligence claims.

Lawsuits Against Self-Employed Brokers and Investment Advisors

Some investment advisors are self-employed, which means the lawsuit would be filed against the advisor directly. While an independent advisor may not have the same resources as a large firm, they will still likely fight the allegations with guidance from an experienced attorney.

The nature of a claim may vary depending on whether you are suing a broker or financial advisor, their legal professional standards, and whether they work independently or for a large company. But regardless of the circumstances, you should strongly consider speaking with an experienced securities lawyer before taking legal action.

Instances when you can Sue your broker or financial advisor

Financial advisors and brokers can fail to perform their professional duties as expected. Consequently, they may be held liable for their client’s investment losses. Here are a few instances when you can sue your broker or financial advisor.

Breach of fiduciary duty

A financial professional’s fiduciary duty can arise from a number of sources: state common law can and the Securities and Exchange Commission’s new Regulation Best Interest (“Reg. BI”) does create a fiduciary duty, and the Investment Advisors Act of 1940 creates a fiduciary duty for investment advisors. What does that mean in English? In sum, they must:

  • Perform their duties with the highest level of professionalism, care, and skill.
  • Act in the best interest of their clients.
  • Put the client’s interests above their own.

If your broker or financial advisor breaches any of the above duties, you may have a right to receive compensation for your financial loss.

Unauthorized trading

Legally, brokers need to have the express legal authority to execute trades on their client’s behalf. If your broker makes transactions without your approval and you lose money in the process, you can be entitled to compensation.

Material omission or misrepresentation

Brokers and financial advisors should give you all the information necessary to make an informed investment decision. If you lose money due to their misrepresentation or failure to disclose relevant information, you can sue them.

Inappropriate investments

Financial advisors and brokers should recommend securities that align with their client’s investment objective, risk tolerance, tax status, and other factors unique to each client. Before June 30, 2020, FINRA’s suitability rule required that investments be “suitable” for each client given the clients’ unique profiles. Thereafter, SEC Reg. BI required that investment advice be made with the investors’ best interests first and foremost. If you lose money because your broker made inappropriate investments, you should hire an attorney to claim compensation. 


Excessive trading, commonly called “churning,” happens when a broker trades within their client’s account with the intent to generate commissions rather than investment gains. The more frequent the trading, and the higher the commissions, the more likely the broker is churning his customer’s account. If you are a victim of churning, you can sue your broker or financial advisor.

Lack of diversification

It is commonly understood and accepted that a diversified portfolio is less likely to suffer wild swings in value as the markets increase and decrease in value. While there can be valid reasons an account is concentrated in a single security or type of security, the broker must discuss with their client the avoidable risks associated with that concentration. Your broker or financial advisor may be held liable if you lose your money due to a lack of diversification.

Proving negligence or fraud to sue your broker successfully

Losing any amount of money on investment can be frustrating, stressful, and set you back financially. There are two elements to any claim: liability (did the broker or financial advisor do something wrong?) and damages (did their conduct caused you to suffer losses?).

Deciding whether the first element – liability – can be satisfied requires more than a simple loss of money. A successful claim requires that the investor prove that their financial professional acted wrongfully (negligently or fraudulently), with that wrongful conduct has caused a loss. This bears repeating: a simple loss is not enough to prove wrongdoing.

In some cases, your broker’s fraud or negligence may be obvious, but the case can be a bit complex in others. Therefore, it would help if you hired an experienced attorney to help you prove negligence or fraud. Your attorney will help you collect the evidence you need to sue your broker or financial advisor successfully.


The vast majority of brokerage firm customer agreements contain an arbitration clause. Most investment advisory agreements also contain arbitration clauses. Brokerage firm arbitration clauses almost always require that you bring claims through a FINRA arbitration only. Investment advisory arbitration clauses rarely require FINRA arbitration and instead use AAA, JAMS, or other private arbitration forums. If your agreement has an arbitration clause, arbitration is the only legal avenue you have to resolve any dispute with your broker or financial advisor unless you can prove that your financial advisor lied to you about the arbitration clause itself.

FINRA arbitration is similar to court litigation. Legal claims against brokers or financial advisors tend to be very complex not only in the claims themselves but the rules and requirements of the FINRA arbitration forum. Therefore, investors are often best served when they utilize an experienced attorney to help pursue the claim.

The arbitration process is more or less a trial in itself. Witnesses are questioned, exhibits are presented, and arbitrators review the facts, arguments, and law to reach a conclusion and issue an award.

An investor who is successful in winning their case and receives an award must then convert that award into money. There are a variety of ways to promote the collection, and an experienced attorney can help the winning investor navigate the steps following a successful award.

Challenging an arbitration award

Arbitration is binding. However, if you are unsatisfied with the arbitration award, a court can review it.

Note that the court will not review or overturn the arbitration award unless you prove that the arbitrators were biased, did not apply the law to the facts, or failed to consider the evidence you put before them. Generally speaking, you have to prove that the arbitration process was unfair, which is a difficult standard to meet.


In the rare case in which your investment agreement does not contain an arbitration clause, you can file a court case. Note that if you decide to file a lawsuit, the court in which you file suit will have strict procedural rules in place, and you will be required to adhere to those rules. Court cases tend to be more expensive than arbitrations, and often take far longer to resolve than do arbitrations. That said, common wisdom finds that juries are often (but not always) more generous than are arbitrators. Whether the benefits of a jury outweigh the costs of pursuing a claim through the court system is an analysis that requires great experience in both forums.

Have a candid conversation with your attorney before deciding between filing a lawsuit and pursuing the claim through arbitration.

Hire an experienced securities attorney

If you are thinking of suing your broker or financial adviser, you should hire an experienced attorney. Contact Hugh Berkson today to discuss how you can get the compensation you deserve.