Table of Contents
- What Investors Should Do When They Discover Trades They Never Approved
- What Counts As An Unauthorized Trade?
- The First Thing To Do: Slow Down And Preserve The Record
- Contact The Brokerage Firm In Writing
- Review Whether The Broker Actually Had Trading Authority
- Check BrokerCheck And The Firm’s Regulatory History
- Understand That A FINRA Complaint And A FINRA Arbitration Are Different
- Timing Can Matter More Than Investors Realize
- What Evidence Often Matters In An Unauthorized Trading Claim?
- Account Documents
- Trade Confirmations And Statements
- Order Tickets And Call Recordings
- Electronic Login Data
- Prior Course Of Dealing
- The Size And Frequency Of Trading
- What Damages Might Be In Dispute?
- What FINRA Arbitration Statistics Suggest About These Cases
- Could It Be Hacking Instead Of Broker Misconduct?
- When An Attorney Can Be Especially Helpful
- A Calm, Documented Response Often Matters More Than A Perfect One
- Final Thoughts
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What Investors Should Do When They Discover Trades They Never Approved
Finding trades in your brokerage account that you never authorized can feel surreal. One moment you are checking a statement or logging into an app, and the next you are staring at positions, losses, or margin activity that make no sense. In general terms, unauthorized trading can involve a broker placing trades without permission, someone using account access they were not entitled to use, or a firm allowing activity that does not match the authority on the account.
If that is where you are right now, the first question is usually simple: what happens next? The answer often depends on the source of the trades, the account paperwork, the timing of your response, and the records available to prove what was and was not approved.
In this post you’ll learn what unauthorized trades often look like, what steps investors commonly take after discovering them, how FINRA arbitration fits in, what evidence can matter, and when an attorney may help evaluate possible recovery options. For a broader explanation of the issue itself, it may help to start with this overview of how unauthorized trading claims are typically framed, including account control and damages.
Scroll to the bottom for every post in this series.
What Counts As An Unauthorized Trade?
At a basic level, FINRA describes prohibited conduct to include purchasing or selling securities in a customer’s account without first contacting the customer and receiving authorization, unless the broker had written discretionary authority or limited time-and-price discretion for that order. FINRA’s prohibited conduct guidance and FINRA Rule 3260 on discretionary accounts are useful starting points here.
That matters because many investors are told, after the fact, that the broker was “just managing things,” “reacting to the market,” or “acting in your best interest.” In legal terms, that explanation may or may not resolve the issue. A registered representative generally cannot exercise discretionary power in a customer account unless the customer gave prior written authorization to a stated person and the firm accepted the account in writing. FINRA Rule 3260 lays that out directly. There is a narrow exception for time-and-price discretion, but FINRA states that this typically lasts only until the end of the business day unless there is a specific written indication otherwise. FINRA Rule 3260; FINRA Notice 04-71.
In other words, not every surprise trade is automatically unlawful, but “I did not expect this trade” and “I never gave permission for this trade” are two very different things. An attorney might help determine whether the facts point to unauthorized trading, unsuitable recommendations, churning, account takeover, failure to supervise, or some combination of those claims.
The First Thing To Do: Slow Down And Preserve The Record
A lot of brokerage disputes are shaped by the paper trail created in the first few days. FINRA tells investors that if they lost money or there was an unauthorized trade in the account, they can complain in writing to the firm and keep copies of all related correspondence. FINRA also says investors can begin by contacting the broker, branch manager, or compliance department. FINRA’s complaint guidance.
SIPC gives similar investor-protection guidance: brokers are expected to issue confirmations and account statements, and if an investor discovers an error in either one, the issue can be brought to the brokerage firm’s attention in writing. SIPC’s fraud-protection page.
In practical terms, investors often start by preserving:
- Monthly account statements
- Trade confirmations
- Screenshots of online account activity
- Emails, texts, and secure messages with the broker
- Notes of calls, including dates and who said what
- New account forms and any discretionary-trading authorization
- Margin agreements and options approvals
- Device/login alerts if the concern involves hacking or account takeover
That early documentation can become important later if the firm argues that the trades were discussed, ratified, or consistent with prior instructions.
Contact The Brokerage Firm In Writing
One of the most common mistakes in these situations is relying on a phone call alone. FINRA’s public guidance specifically points investors toward a written complaint when unauthorized trading or losses are involved. FINRA complaint page.
A written notice often helps establish several things at once:
- When the investor first discovered the trades
- Which trades are disputed
- Whether the investor denied authorizing them
- Whether the investor asked for correction, reversal, or reimbursement
- Whether the firm was put on notice of a possible supervision problem
Some investors also ask the firm to preserve call recordings, order tickets, internal notes, IP logs, and login records. That can be especially relevant where the dispute involves online access, impersonation, or claims that the investor “approved” the trades electronically.
If the account also appears compromised, the issue may involve more than a broker’s misconduct. The SEC has highlighted account takeovers and cybersecurity-related securities misconduct as an enforcement priority, including through its Cyber and Emerging Technologies Unit. SEC enforcement results for fiscal year 2025. FINRA’s 2026 Annual Regulatory Oversight Report likewise discusses social engineering, identity fraud, and new-account fraud risks affecting brokerage accounts. FINRA Annual Regulatory Oversight Report.
Review Whether The Broker Actually Had Trading Authority
A recurring issue in unauthorized-trading cases is whether the investor signed something the firm later points to as authorization. That does not always end the analysis, but it often becomes central.
FINRA Rule 3260 says discretionary authority generally requires prior written authorization from the customer and written acceptance by the member firm. FINRA Rule 3260. So the questions often become:
- Was there a discretionary trading authorization at all?
- Who was named in it?
- Did the firm formally accept it?
- Did the trades stay within that authority?
- Was the investor only giving limited same-day time-and-price discretion?
- Were the trades so frequent or large that they suggest excessive trading anyway?
Even when some authority existed, the dispute may shift toward whether the representative exceeded it or whether the firm failed to supervise the account properly.
Check BrokerCheck And The Firm’s Regulatory History
If unauthorized trades appear in an account, investors often want to know whether this is the first complaint involving that broker. FINRA’s BrokerCheck is a free tool that lets the public research registered investment professionals, brokerage firms, and certain adviser firms. FINRA explains that BrokerCheck reports can include employment history, registrations, and disclosures such as customer complaints. About BrokerCheck; What To Do If Your Investment Professional Has A Customer Complaint On BrokerCheck.
That information does not prove any specific claim, but it may provide context. A pattern of prior customer complaints, outside business activity issues, or disciplinary disclosures can become relevant in investigating supervision and credibility questions. Some investors also look into the firm itself, not just the individual broker.
This is one reason many people dealing with these disputes look for counsel with documented experience in securities arbitration and highly similar matters. The legal issue is rarely just “a bad trade.” It can involve permissions, supervision, compliance systems, damages analysis, and forum strategy all at once.
Understand That A FINRA Complaint And A FINRA Arbitration Are Different
This distinction surprises a lot of investors.
A regulatory complaint to FINRA may prompt review or investigation, but it does not automatically recover money for the investor. FINRA’s complaint page says its sanctions can include fines, suspensions, or bars, which are regulatory outcomes. FINRA complaint guidance.
A FINRA arbitration claim, by contrast, is the dispute-resolution process investors commonly use to seek compensation from a brokerage firm or broker. FINRA says it operates the largest securities dispute resolution forum in the United States, and investors can file an arbitration or mediation claim through its process. FINRA filing page.
That means an investor may pursue both tracks at the same time: one for reporting misconduct, another for pursuing damages.
For additional context on the mechanics of these cases, FINRA’s investor dispute guide lists unauthorized trading among common claims brought in Statements of Claim. It also explains that investors often attach account statements and trade confirmations to support those claims. FINRA/Pace Investor Rights Clinic guide.
Timing Can Matter More Than Investors Realize
Unauthorized-trading cases often turn on timing in two separate ways.
First, firms often argue that the investor waited too long to object after receiving confirmations or statements. That argument is not always decisive, but it can become a central defense. The SEC has long advised investors to review account statements and confirmations carefully and verify on the next statement that any reported problem was corrected. SEC investor guidance on working with the securities industry.
Second, there are filing deadlines. FINRA Rule 12206 states that no claim is eligible for submission to arbitration under the Code if six years have elapsed from the occurrence or event giving rise to the claim. FINRA’s investor dispute guide also notes that state and federal statutes of limitation may apply separately. FINRA Rule 12206; FINRA investor dispute guide.
That combination can create real complexity. An attorney might help evaluate not just whether a claim exists, but also whether it is timely, where it can be filed, and which transactions fall inside or outside applicable deadlines.
What Evidence Often Matters In An Unauthorized Trading Claim?
In many brokerage disputes, the fight is less about what happened in the market and more about who authorized what.
Evidence commonly examined includes:
Account Documents
New account forms, discretionary authorizations, margin paperwork, options approvals, and any powers of attorney can help show the formal scope of authority.
Trade Confirmations And Statements
These can establish dates, quantities, securities, commissions, margin activity, and whether the investor received notice.
Order Tickets And Call Recordings
These may show whether the order came from the customer, from a broker claiming discretion, or from someone else entirely.
Electronic Login Data
In account-takeover cases, login location data, device identifiers, password resets, and multi-factor authentication records can matter a great deal.
Prior Course Of Dealing
Firms sometimes argue the investor had a history of letting the broker trade informally. Investors often respond that discussing ideas is not the same as approving specific trades. That distinction can be fact-intensive.
The Size And Frequency Of Trading
Even where some discretion existed, excessively frequent or oversized transactions may point toward other claims, including excessive trading. FINRA Rule 3260 expressly addresses excessive transactions in discretionary accounts. FINRA Rule 3260.
If you want a deeper dive into the proof side of these disputes, one useful companion topic is how investors typically build the evidence for a FINRA case involving trades that were never approved.
What Damages Might Be In Dispute?
Damages in an unauthorized-trading case are not always limited to the face amount of the trade loss. Depending on the facts, disputed damages may include:
- Trading losses
- Out-of-pocket losses
- Margin interest
- Commissions and fees
- Opportunity-loss theories in some circumstances
- Rescission-style remedies in some claim structures
- Attorneys’ fees or interest where available by contract, statute, or rule
The actual measure of damages often depends on the claim theory and the case posture. Some cases focus on restoring the account to where it likely would have been absent the disputed trades. Others focus on narrower transaction-by-transaction losses. An attorney and, in some cases, a damages expert may help sort through those calculations.
What FINRA Arbitration Statistics Suggest About These Cases
Many investors assume every brokerage dispute goes all the way to a final hearing. That is not usually how the system works. FINRA has said for years that the vast majority of customer cases close by settlement rather than award, and its current statistics continue to show that only a minority of customer cases end in a decided award. FINRA statement to the SEC Investor Advisory Committee; FINRA 2025 dispute resolution statistics.
According to FINRA’s 2025 dispute-resolution statistics page, in 2024 there were 232 customer claimant arbitration award cases decided, and customers were awarded damages in 26% of those decided cases. For 2025 year-to-date, FINRA reported 240 customer claimant cases decided and damages awarded in 28% of them. FINRA 2025 dispute resolution statistics.
Those numbers can be easy to misread. They do not mean only 26% or 28% of investors recover anything overall, because many disputes resolve before an award is issued. What they do suggest is that case preparation, claim framing, evidence preservation, and settlement posture can matter substantially in this forum.
FINRA also publishes statistics on unpaid customer awards. For 2024, FINRA’s page reflects 15 unpaid customer awards totaling approximately $22 million. FINRA unpaid awards statistics. That is one reason investors sometimes focus not only on proving liability, but also on evaluating collectability and the financial position of the respondents.
Could It Be Hacking Instead Of Broker Misconduct?
Sometimes yes.
Not every unauthorized trade case is a classic broker-discretion case. In some matters, the account may have been compromised through stolen credentials, phishing, malware, social engineering, or impersonation. The SEC has brought enforcement actions involving hacked brokerage accounts used for improper trading. In one notable action, the SEC alleged that online retail brokerage accounts were hacked and used to make unauthorized purchases as part of a market-manipulation scheme. SEC press release on hacked brokerage accounts.
That does not automatically remove the brokerage firm from the picture. Depending on the facts, a dispute may involve questions about authentication controls, suspicious login monitoring, trade alerts, account restrictions, and response time after the first complaint. In other words, “unauthorized trading” can describe several different pathways to the same end result: trades the investor did not approve.
When An Attorney Can Be Especially Helpful
Some investors begin by trying to handle the problem directly with the firm. In some situations that resolves the issue quickly. In others, the firm denies wrongdoing, produces paperwork the investor has never seen, or argues that silence after account statements amounted to acceptance.
That is often the point where legal guidance becomes especially valuable. An attorney experienced in securities disputes may help analyze:
- Whether the account was nondiscretionary or discretionary
- Whether written authority actually existed
- Whether the trades were unauthorized, excessive, unsuitable, or the product of account takeover
- Whether the firm failed to supervise the representative or the account
- Whether the matter belongs in FINRA arbitration, mediation, or potentially court
- What deadlines and damages theories may apply
Investors also sometimes discover that the real challenge is finding counsel with demonstrable experience in highly similar matters, not just general litigation experience. Securities arbitration is a niche area with its own rules, defenses, and evidentiary patterns.
A Calm, Documented Response Often Matters More Than A Perfect One
Discovering unapproved trades can make people want to fix everything immediately in one phone call. That reaction is understandable. But these cases often become clearer when the response is orderly:
- identify the transactions,
- preserve the records,
- notify the firm in writing,
- determine whether authority existed,
- investigate the broker and firm background,
- and evaluate whether a FINRA claim may be appropriate.
For investors trying to make sense of what happened, the broader landscape of account control, unauthorized transactions, and possible damages can provide helpful context before the facts are translated into a formal claim.
Final Thoughts
Unauthorized trades can raise more than one legal issue at the same time: lack of permission, unauthorized discretion, account takeover, excessive trading, supervision failures, and recoverable damages. The sooner the facts are documented, the easier it often is to assess what happened and what options may exist.
Visit ReferU.AI to get matched with an attorney who has demonstrable experience in cases like yours — for free.
