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Trading Expert Witnesses

Litigation involving securities and commodities trading typically arises when a party alleges that trades were executed improperly, that a broker or trading desk breached its duties, or that market activity itself was manipulative or otherwise unlawful. These disputes include allegations of insider trading, breach of fiduciary duty by broker-dealers, disputes over algorithmic or high-frequency trading practices, and regulatory enforcement actions brought under FINRA or SEC rules. Because trading activity generates a dense electronic record, the central issue is usually whether that record, properly analyzed, supports or refutes the claim of improper conduct. Attorneys need an expert who can interpret trading data and market context in a way that makes the dispute intelligible to a judge or jury.

A trading expert’s analysis typically involves reconstructing the relevant trading activity, evaluating it against applicable regulatory standards and industry practice, and assessing whether the trades in question reflect legitimate strategy or improper conduct. This work supports liability determinations in market manipulation and breach of duty claims, informs damages models tied to trading losses or lost profits, and provides the analytical basis for challenging an opposing expert’s characterization of the trading record. In disputes involving complex instruments such as derivatives or structured products, the expert’s ability to explain market mechanics clearly is often decisive. That combination of technical fluency and courtroom communication is what attorneys look for in a trading expert.

Because trading disputes often turn on institutional experience that only comes from having worked inside a trading desk or brokerage, the right expert’s background matters as much as their credentials. Round Table Group’s trading experts include professionals who have managed NASDAQ trading departments, held executive roles at NYSE-affiliated brokerage firms, and built their own securities firms, alongside academic researchers published on market microstructure and trading regulation. We have completed more than 75,000 expert searches for litigators, and we apply that experience to help counsel identify trading experts suited to the specific market and instrument at issue. Let us help you find the right trading expert for your case by calling us at (202) 908-4500.

Kinds of Cases We Work On

Round Table Group helps our clients find a wide variety of Trading expert witnesses for cases like:

01

Prime brokerage margin call dispute

A multi-strategy hedge fund sued its prime broker after the broker liquidated a large equity portfolio during a volatile trading week, alleging the broker's margin calculation methodology deviated from the terms of the prime brokerage agreement and triggered an unnecessary forced liquidation. A margin methodology and prime brokerage expert reconstructed the broker's intraday risk calculations against the contractual margin formula and the methodologies used by comparable prime brokers. The expert found the broker had applied a stress-test haircut that wasn't contemplated anywhere in the agreement, accelerating the margin call by roughly a day and a half ahead of when a contractually compliant calculation would have triggered it. That timeline discrepancy became the centerpiece of the fund's breach claim and drove a settlement covering a substantial portion of the liquidation losses.
02

Algorithmic trading malfunction litigation

A proprietary trading firm sued its execution management system vendor after a software update caused a runaway algorithm to execute a substantial volume of unintended trades within a matter of minutes before the kill switch engaged. A market microstructure and algorithmic trading expert reviewed the system's order logs, the vendor's change-management records, and the kill-switch architecture against industry-standard pre-trade risk control practices. The expert determined the vendor had deployed the update without the position-limit checks that were standard in comparable execution systems, and that a properly configured kill switch would have contained losses to a small fraction of what actually occurred. That finding was central to the arbitration panel's award holding the vendor liable for the bulk of the trading losses.
03

Trade secrets dispute between quantitative trading firms

A quantitative trading firm sued a departing portfolio manager and his new employer, alleging he had taken proprietary signal-generation code and trading strategies in violation of his restrictive covenants. A quantitative trading strategy expert compared the source code and backtested strategy parameters used at the new firm against the plaintiff's proprietary codebase, identifying matching statistical signatures in factor weightings that were unlikely to have arisen independently. The expert's code-similarity analysis, presented with side-by-side backtest output, persuaded the court to grant a preliminary injunction barring the new firm from running the strategy pending trial, which in turn pushed the parties into a licensing settlement.
04

Rogue trading and internal controls litigation

A bank sued a former trader's outside risk-consulting firm, alleging the firm's supervisory control review had negligently signed off on risk-limit monitoring procedures that failed to detect a trader's unauthorized position-building, which ultimately produced substantial losses before the position was discovered. A trading supervision and internal controls expert reviewed the consulting firm's control assessment work papers against industry-standard practices for position-limit monitoring and exception reporting at comparable trading desks. The expert found the consulting firm's review had never actually tested whether exception reports were being escalated to risk management, a gap that fell well short of the standard of care for this kind of engagement. That finding shifted a meaningful share of the bank's losses onto the consulting firm in the eventual settlement allocation.
05

Introducing broker unauthorized trading dispute

A clearing broker sued an introducing broker after discovering the introducing broker's registered representative had been executing unauthorized trades in client accounts for over a year, seeking to recover losses and regulatory costs from the introducing broker under their clearing agreement. A trading supervision expert reviewed the introducing broker's trade authorization logs, client communication records, and supervisory review procedures against industry-standard supervisory practices for retail trading accounts. The expert found the introducing broker's supervisory reviews had consistently rubber-stamped exception reports flagging unusual trading activity in the accounts at issue without any documented follow-up. That supervisory failure was central to the arbitration panel's decision allocating the bulk of the resulting losses to the introducing broker rather than the clearing broker.
06

Commodity hedge program dispute

An airline sued its swap dealer counterparty, alleging the dealer had recommended and structured a jet fuel hedging program with basis risk characteristics that were not adequately disclosed, resulting in substantial losses when the hedge diverged sharply from the airline's actual fuel costs during a period of market dislocation. A commodities trading and hedging expert reviewed the hedge structuring documents, historical basis correlation data available at the time the program was recommended, and industry-standard practices for corporate fuel hedging disclosures. The expert found the correlation between the hedge instrument and the airline's actual jet fuel exposure had been meaningfully weaker, even using data available at the time of structuring, than what the dealer's marketing materials had represented. That finding supported the airline's claim that the mismatch was foreseeable and inadequately disclosed, and contributed to a settlement covering a portion of the hedging losses.
07

Securities lending fee dispute

A short-focused hedge fund sued its prime broker, alleging the broker had misrepresented the availability and true cost of borrowing shares in a heavily shorted stock, charging fees well above what comparable brokers were charging for the same borrow during a squeeze. A securities lending and prime brokerage expert reviewed the broker's internal stock loan desk records and rate cards, comparing them against market-wide borrow rate data from the same period. The expert found the broker had charged the fund a rate roughly double the market-clearing rate reported by comparable lenders during the relevant weeks, without disclosing more favorably priced borrow that was in fact available internally. That comparison supported the fund's breach of best-execution-style dealing claims and contributed to a negotiated fee rebate covering the disputed period.
08

Structured product valuation dispute

A pension fund sued the investment bank that had sold it a portfolio of structured notes, alleging the bank's periodic mark-to-market valuations understated the notes' value to justify collecting excess collateral under a related financing arrangement. A structured products valuation expert independently modeled the notes using the underlying volatility surfaces and correlation assumptions available at each valuation date, comparing the results to the bank's marks. The expert found the bank's marks had consistently applied a wider liquidity discount than the market data supported, understating the portfolio's value by a meaningful margin over the disputed period. That valuation gap supported the pension fund's claim for return of excess collateral and anchored the settlement figure.
09

Best execution and order-routing dispute

An institutional asset manager sued its executing broker-dealer, alleging the broker routed a substantial share of client orders to venues that paid the broker higher rebates rather than venues offering the best available execution, in breach of the parties' execution agreement. A best-execution and order-routing expert analyzed years of order-routing data, comparing achieved execution prices and fill rates against contemporaneous quotes across competing venues. The analysis showed a statistically significant pattern of routing large orders to a rebate-maximizing venue that underperformed the prevailing best bid and offer by a small but consistent margin, translating into a substantial execution shortfall. The expert's statistical analysis was cited in the court's order denying the broker's motion to dismiss and became the anchor for the eventual settlement.
10

ISDA derivatives valuation dispute

Following the early termination of an interest rate swap portfolio, a corporate counterparty disputed the close-out amount calculated by the dealer bank, arguing the bank's valuation methodology deviated from the "commercially reasonable" standard required under the ISDA Master Agreement. A derivatives valuation expert independently modeled the terminated swaps using standard discounting curves and volatility inputs available as of the termination date, and compared the result to the bank's internal valuation. The expert's model produced a close-out value meaningfully lower than the bank's figure, driven by the bank's use of a wider bid-offer spread than the market data supported. That gap gave the corporate counterparty leverage to negotiate a reduced settlement figure shortly before the scheduled evidentiary hearing.

Here are a few of our favorite Trading Expert Witnesses:

Pennsylvania Trading, Fuel, Oil, Power Expert #9006

I have 20 years of experience, and specialize in the field of commodity trading with specific knowledge in the areas of energy cash and financial markets. I have guided research and analysis activities and oversaw the development of proprietary mathematical models designed to identify pricing inefficiencies.

 

Connecticut Fixed Income, Rates, Trading Expert #12952

I have 40 years of experience and specialize in the field of United States capital markets, with specific knowledge of fixed income securities, mortgage-backed securities and equities. I have published on such topics as United States capital markets, mortgage-backed securities and portfolio strategy. I have testified 15 times on topics such as fixed income securities, mark-ups and mark-downs and mortgage-backed.

 

California Electronic, Trading, Payments Expert #14772

I have 20 years of experience in the field of financial services, with specific knowledge of electronic trading, investments, and payment system. I have published on such topics as leadership, the role of a chief information officer, and information technology as a transformational agent.

 

New York Portfolio Structure, Trading Expert #15704

I have 30 years of experience, and specialize in the field of fixed income with specific knowledge in the areas of product, trading sales and marketing.

 

Massachusetts High Frequency Trading Expert #16377

This sample expert has over 15 years of experience, and specializes in the field of finance with specific knowledge in the areas of market microstructure, mutual funds and hedge funds. Published on such topics as MiFID, liquidity in long-dated options and futures and mutual fund end-of-quarter return manipulation.

 

Your Case Deserves The Best Trading Expert Witnesses

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The right expert witnesses and consulting experts can make your case. That’s why we have spent so many hours over the past quarter century making sure our clients have just the right expert team — whether one expert or many, early-stage advice or expert reports and testimony. Across over 50,000 expert search assignments, we have honed a unique, customized approach to identifying, analyzing and connecting with expert talent so you can focus on winning your case.

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Pennsylvania Natural Gas, Pipelines, Trading Expert #19486

This sample expert has 32 years of experience, and specializes in the field of natural gas with specific knowledge in the areas of natural gas pipelines, natural gas trading and power trading.

 

Texas Valuation, Trading Expert #22590

I have 16 years of experience, and specialize in the field of financial markets with specific knowledge in the areas of valuation, active portfolio management and regulation. I have published on such topics as market efficiency, equity pricing and bond pricing. I have testified on sub-prime mortgage-backed assets, market manipulation and active portfolio management.

 

California Trading, Risk Management Expert #32874

I have 11 years of experience and specialize in the field of energy trading, with specific knowledge of trading, risk management and information technology.

 

Illinois Trading Expert #34511

I have 15 years of experience in the field of operations, with specific knowledge of trading related issues, risk management and personnel issues. I have published on such topics as trading hand-outs.

 

New Hampshire Trading, Regulations, Finance Expert #35002

I have 20 years of experience, and specialize in the field of securities with specific knowledge in the areas of investor portfolio evaluation, regulatory issues and sales practice supervision. I have testified 15 times on topics such as investor portfolio evaluations, regulatory issues and sales practice supervision.100% of my past clients have either hired me more than one time or referred me to someone else.

 

Tennessee Trading, Stock Exchange, Taxes Expert #32354

I have 15 years of experience, and specialize in the field of finance with specific knowledge in the areas of institutional trading, financial market design and corporate governance. I have published on such topics as institutional trading price impact asymmetry, manual versus electronic trading and taxes, and Sarbanes Oxley Act. I have published my international research on institutional trading and financial market design in leading journals such as Journal of Finance, Financial Management, Journal of Banking and Finance, Journal of Financial Research, and Contemporary Accounting Research. I have also written several book chapters and articles for the popular press. I…

 

Market Valuations, Trading Expert #38880

I have 7 years of experience and specialize in the field of corporate finance, with specific knowledge of mergers and acquisitions, market valuation and institutional investors. I have published on such topics as differences of opinion among investors, managerial overconfidence and corporate governance.

 

New York Software, Trading, Equities Expert #40118

I have 15 years of experience, and specialize in the field of software testing and quality assurance, with specific knowledge in the areas of financial services, electronic trading systems and algorithmic trading. I have published on such topics as testing financial software, databases and agile approaches to testing software.

 

Pennsylvania Investment, Trading, Stocks Expert #43395

I have 30 years of experience, and specialize in the field of finance and investments with specific knowledge in the areas of investment advisors, broker-dealers and mutual funds. I have been involved in all aspects of an investment business, from compliance to investment performance and trading to developing and retaining clients.

 

Florida Trading, Futures, Options Expert #43991

I have 30 years of experience, and specialize in the field of finance with specific knowledge in the areas of trading, derivatives and risk management. I have published on such topics as intraday behavior of options and futures, risk managment and hedging and portfolio management. I have overcome the wide difference between academic research and practical importance with my research, publications, and teaching. I research interesting issues in trading and investment decision making and then communicate those results so that non-academics can understand them. I believe in applying ideas rather then developing theoretical models. Specific areas of recent work include…

 

Massachusetts Derivatives, Systems, Trading Expert #47962

I have 25 years of experience, and specialize in the field of capital markets and derivatives with specific knowledge in the areas of order management, trading, clearance and settlement. I have published on such topics as algorithmic trading, business continuity management and convergence of listed and over the counter derivatives. I have testified on financial technology intellectual property. As a management consultant, I helped to launch one of the most successful inter-dealer brokers in a record time of six months.

 

Connecticut Trading, Risk Management, Risk Expert #47999

I have 20 years of experience, and specialize in the field of commodity markets with specific knowledge in the areas of trading and the risk systems that allow major trading companies and investment banks to manage their risk, developing country commodity markets.

 

New York Fixed Income Securities, Trading Expert #51944

I have 35 years of experience, and specialize in the field of fixed income sales and trading, with specific knowledge in the areas of mortgage backed securities, asset backed securities and institutional sales and trading. I have testified on compensation, securities sales and trading practices and sales and trading desk management. I became one of the youngest limited partners of a financial services company when I was 28 yrs old, I have managed billions in risk beginning in my 30’s.

 

Put Our Trading Expert Network to Work for You

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Our huge network of experts – eminent university professors and practitioners who have achieved renown as thought leaders in their fields – combined with unparalleled research capabilities puts the experts you need at your disposal when and where you need them.

If you’re a litigator or general counsel, we want to put this network to work for you and your clients. Let us know how we can help by calling us at (202) 908-4500 or filling out the form on this page. We’re so confident you’ll love what we do that unless you retain an expert we present there’s no charge!

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Questions Attorneys Ask About Trading Expert Witnesses:

A trading expert is typically retained when a case involves allegations of improper trading conduct—such as insider trading, market manipulation, breach of fiduciary duty by a broker-dealer, or disputes over algorithmic or high-frequency trading practices. These cases usually require someone who can interpret dense trading data and explain its significance in the context of applicable regulatory standards.
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Related topics

Corporate Finance
Economics
Forecasting
Hedge Funds
Investment Management
Lost Profits
Options
Regulation
Securities
Stocks