Top 20 Litigation Support & Disputes Advisory 2025

This report forms part of the Ranking News Advisory series, which evaluates specialized advisory firms across global corporate, financial, and regulatory ecosystems.

Litigation support and disputes advisory firms play a critical role in modern legal and financial systems, providing independent analysis and expert insight in complex commercial conflicts. As litigation, arbitration, and regulatory disputes increase in scale and sophistication, the demand for credible, technically rigorous advisory support has grown significantly across jurisdictions.

Firms in this category operate at the intersection of law, economics, and finance, supporting legal counsel, corporations, and financial institutions in matters involving damages assessment, valuation disputes, contractual interpretation, and regulatory challenges. Unlike investigations-focused advisory, which centers on fact-finding, disputes advisory is primarily concerned with quantification, interpretation, and expert positioning within legal proceedings.

These firms are frequently engaged in high-stakes arbitration, cross-border litigation, and regulatory disputes where outcomes depend heavily on the quality and defensibility of financial and economic analysis. Their work often forms the foundation for expert testimony, influencing judicial decisions, settlement outcomes, and regulatory determinations.

This ranking identifies firms that demonstrate sustained credibility in disputes environments, supported by technical depth, institutional reputation, and consistent involvement in complex legal proceedings.

Market Overview

The litigation support and disputes advisory market has expanded in parallel with the increasing complexity of global commerce. Cross-border transactions, infrastructure investments, and regulatory enforcement actions have led to a rise in disputes requiring specialized financial and economic analysis.

Firms in this space typically work alongside law firms and corporate legal teams, providing independent expert reports, damages quantification, and valuation analysis. Their role is particularly prominent in arbitration proceedings, where financial and economic experts often play a central role in determining outcomes.

The market is characterized by a combination of large multidisciplinary advisory firms and specialized economic consulting boutiques. While larger firms offer integrated capabilities and global reach, specialist firms often differentiate through deep expertise in economic theory, valuation methodologies, and sector-specific disputes.

As disputes become increasingly data-intensive and technical, the ability to combine analytical rigor with clear expert communication has become a defining characteristic of leading firms in this category.

Industry Trend — 2025

The disputes advisory landscape in 2025 reflects a continued shift toward analytical sophistication and cross-disciplinary integration. Legal proceedings increasingly rely on complex financial models, econometric analysis, and structured valuation frameworks, elevating the role of expert advisors.

International arbitration remains a key driver of demand, particularly in sectors such as energy, infrastructure, and technology. Disputes involving valuation, pricing, and contractual interpretation require advisors capable of translating technical analysis into defensible expert testimony.

At the same time, regulatory disputes have become more prominent, with firms supporting clients in matters involving antitrust, financial regulation, and compliance enforcement. This has expanded the role of disputes advisors beyond traditional litigation into broader regulatory contexts.

Firms that combine strong analytical capabilities with credibility in legal settings—particularly those with experienced testifying experts—are best positioned in the current environment.

Methodology — Core Eligibility Criteria

To ensure structural consistency within the category, firms considered for this ranking were evaluated based on the following eligibility conditions:

• Demonstrates active involvement in litigation, arbitration, or regulatory disputes
• Provides expert advisory services, including damages assessment or valuation analysis
• Supports legal proceedings through independent analysis and reporting
• Maintains recognized expertise among legal professionals and dispute practitioners
• Operates in complex or cross-border dispute environments

Organizations focused solely on litigation or product-based services without independent dispute capability are generally excluded.

Methodology — Ranking Factors

Firms included in the ranking were evaluated using a combination of qualitative and structural considerations:

• Depth of disputes and litigation support capabilities
• Strength in damages quantification, valuation, and economic analysis
• Experience in arbitration and complex legal proceedings
• Reputation among law firms, courts, and arbitration panels
• Quality and credibility of expert testimony
• Global reach and cross-border execution capability

The objective of the ranking is to identify firms whose advisory platforms maintain sustained relevance within the global litigation support & disputes ecosystem.

The ranking universe consisted of approximately 60–80 firms globally, from which 20 institutions were selected.

Tier classifications reflect relative institutional positioning within the litigation support and disputes advisory sector.

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Tier I — Leading Litigation Support & Disputes Advisory Firms

FTI Consulting

• Headquarters: Washington, D.C., United States
• Founded: 1982

FTI Consulting maintains one of the most comprehensive disputes advisory platforms globally, with extensive involvement in litigation, arbitration, and regulatory proceedings. The firm is widely recognized for its ability to deliver complex financial analysis, damages assessment, and expert testimony across a broad range of industries.

Its disputes practice integrates forensic accounting, valuation, and economic analysis, supported by advanced data capabilities. FTI is frequently engaged in high-profile cases requiring large-scale analytical resources and multidisciplinary expertise, making it a consistent presence in complex global disputes.

Berkeley Research Group (BRG)

• Headquarters: Emeryville, United States
• Founded: 2010

BRG has established itself as a leading disputes advisory firm, particularly in the areas of forensic accounting, damages analysis, and expert testimony. The firm operates at the intersection of finance and economics, supporting clients in complex litigation and arbitration matters.

Its professionals are frequently engaged as expert witnesses, providing structured financial analysis and defensible opinions in high-stakes disputes. BRG’s combination of technical rigor and litigation-focused expertise positions it strongly within the disputes advisory landscape.

HKA Global

• Headquarters: London, United Kingdom
• Founded: 2017

HKA specializes in dispute resolution and expert advisory, with particular strength in construction, infrastructure, and energy-related disputes. The firm is widely recognized for its expertise in quantum analysis, delay claims, and project-related financial disputes.

Its teams combine technical, financial, and contractual analysis to support arbitration and litigation processes. HKA’s sector-specific focus and strong presence in international arbitration position it as a leading specialist within disputes advisory.

Secretariat Advisors

• Headquarters: Washington, D.C., United States
• Founded: 2008

Secretariat Advisors focuses on disputes, investigations, and forensic accounting, with strong emphasis on litigation support and expert advisory. The firm is frequently engaged in complex disputes requiring detailed financial analysis and expert testimony.

Its professionals bring deep experience in valuation, accounting, and damages assessment, supporting clients in arbitration and litigation across multiple sectors. Secretariat’s focused advisory model emphasizes analytical rigor and credibility in expert positioning.

CRA (Charles River Associates)

• Headquarters: Boston, United States
• Founded: 1965

Charles River Associates is a leading economic consulting firm with strong capabilities in litigation support and disputes advisory. The firm specializes in economic analysis, valuation, and regulatory disputes, particularly in antitrust, finance, and intellectual property.

Its experts frequently serve as testifying witnesses in courts and arbitration panels, providing structured economic analysis in complex disputes. CRA’s academic foundation and analytical depth make it a key player in high-level disputes advisory.

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Tier II — Established Litigation Support & Disputes Advisory Firms

(Alphabetical order)

AlixPartners

• Headquarters: New York, United States
• Founded: 1981

AlixPartners provides litigation and disputes advisory services primarily in situations involving financial distress, restructuring, and complex stakeholder conflicts. The firm is frequently engaged in disputes arising from corporate turnarounds, insolvency proceedings, and transaction-related disagreements where financial outcomes are closely tied to operational performance.

Its teams combine restructuring expertise with financial analysis to assess damages, evaluate claims, and support legal strategies in high-pressure environments. AlixPartners’ ability to connect dispute-related financial issues with underlying business realities distinguishes it from purely analytical advisory firms. This integration allows clients to align litigation strategy with broader financial and operational considerations, particularly in cases involving distressed assets and contested valuations.

Ankura

• Headquarters: New York, United States
• Founded: 2014

Ankura has developed a broad disputes advisory platform encompassing forensic accounting, valuation, and expert testimony across litigation and arbitration contexts. The firm supports clients in complex disputes involving financial reporting issues, transaction disagreements, and regulatory challenges, often in cross-border environments.

Its multidisciplinary structure enables integration of accounting, economic, and industry expertise, allowing for comprehensive analysis of disputed financial matters. Ankura is frequently engaged by legal counsel to provide independent expert opinions and structured financial assessments. The firm’s continued growth reflects its ability to compete effectively across both large-scale disputes and specialized advisory engagements requiring technical precision.

BRattle Group

• Headquarters: Boston, United States
• Founded: 1990

The Brattle Group is a specialist economic consulting firm with strong positioning in litigation and regulatory disputes, particularly in sectors such as energy, finance, and competition economics. The firm’s work centers on applying rigorous economic theory and quantitative analysis to complex legal questions.

Its experts are regularly engaged in high-profile disputes requiring detailed econometric modeling, valuation analysis, and market assessment. Brattle’s reputation is closely tied to the academic credentials and credibility of its professionals, many of whom serve as testifying experts in courts and arbitration panels. The firm’s analytical depth makes it particularly relevant in technically demanding disputes involving pricing, market structure, and regulatory frameworks.

Compass Lexecon

• Headquarters: Chicago, United States
• Founded: 1977

Compass Lexecon is one of the most prominent global economic consulting firms, specializing in litigation and regulatory disputes involving antitrust, finance, and valuation issues. The firm is widely recognized for its ability to deliver sophisticated economic analysis in high-stakes legal proceedings.

Its professionals frequently serve as expert witnesses, providing testimony supported by advanced econometric modeling and financial theory. Compass Lexecon’s strong academic foundation and global presence position it as a leading advisor in disputes where economic interpretation plays a central role. The firm is particularly active in cross-border regulatory cases and complex arbitration matters involving competition and financial markets.

Cornerstone Research

• Headquarters: San Francisco, United States
• Founded: 1989

Cornerstone Research focuses on providing economic and financial analysis in litigation, with particular strength in securities, financial markets, and corporate governance disputes. The firm works closely with leading academic experts to support complex legal proceedings.

Its advisory work often involves detailed analysis of financial transactions, market behavior, and corporate disclosures, contributing to expert testimony in litigation and regulatory cases. Cornerstone’s model emphasizes collaboration with external experts, allowing it to combine academic rigor with structured advisory execution. The firm’s reputation is particularly strong in securities litigation and enforcement-related disputes.

Duff & Phelps

• Headquarters: New York, United States
• Founded: 1932

Duff & Phelps contributes to disputes advisory through its established valuation and financial analysis capabilities, supporting litigation and arbitration involving complex financial issues. The firm’s work often centers on disputes related to valuation, transaction structuring, and financial reporting.

Its teams provide independent assessments of financial positions, damages, and economic impact, supporting legal arguments in contentious situations. Duff & Phelps’ long-standing presence in valuation advisory provides a strong foundation for dispute-related engagements, particularly where financial interpretation and credibility are critical.

Keystone Strategy

• Headquarters: Boston, United States
• Founded: 2003

Keystone Strategy provides data-driven advisory services in litigation and disputes, with a focus on technology, intellectual property, and complex commercial cases. The firm applies advanced analytics and economic modeling to support legal arguments and expert testimony.

Its work often involves large datasets and technical subject matter, requiring integration of data science, economics, and industry expertise. Keystone’s positioning reflects the increasing importance of quantitative analysis in disputes, particularly in technology-driven sectors where traditional valuation approaches may be insufficient.

NERA Economic Consulting

• Headquarters: New York, United States
• Founded: 1961

NERA Economic Consulting is a leading provider of economic analysis in litigation and regulatory disputes, with extensive experience across antitrust, securities, and financial market cases. The firm’s work focuses on applying economic theory to real-world disputes, supporting both litigation and regulatory proceedings.

Its experts frequently serve as testifying witnesses, providing structured analysis on market behavior, pricing, and financial impact. NERA’s long-standing presence and global network enable it to support complex cross-border disputes, particularly those involving regulatory oversight and competition issues.

Stout

• Headquarters: Chicago, United States
• Founded: 1991

Stout provides valuation and disputes advisory services across a range of litigation contexts, including shareholder disputes, transaction-related disagreements, and financial reporting issues. The firm combines valuation expertise with forensic analysis to assess damages and financial impact.

Its teams are frequently engaged to support legal proceedings requiring independent financial analysis and expert input. Stout’s positioning bridges traditional valuation advisory and litigation support, allowing it to address disputes where financial interpretation is central to case outcomes.

Teneo

• Headquarters: New York, United States
• Founded: 2011

Teneo participates in disputes advisory through its broader strategic and risk advisory platform, particularly in high-profile situations where litigation intersects with reputational and stakeholder considerations. The firm supports clients facing complex disputes that extend beyond purely financial analysis.

Its multidisciplinary approach integrates financial advisory, communications strategy, and senior-level counsel, allowing clients to navigate both legal and market-facing dimensions of disputes. Teneo’s role is particularly relevant in cases where litigation outcomes have broader implications for corporate reputation and stakeholder confidence.

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Tier III — Specialist Litigation & Disputes Advisory Firms

(Alphabetical order)

• Accuracy
• Econ One
• Oxera
• Secretariat International
• S-RM

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Remarks

Litigation support and disputes advisory firms continue to play a critical role in the resolution of complex commercial, financial, and regulatory conflicts. As legal proceedings become increasingly data-driven and analytically intensive, the demand for independent, technically rigorous advisory support remains structurally strong.

The firms recognized in this ranking reflect a combination of economic expertise, financial analysis capability, and credibility within legal environments. Their work extends beyond traditional litigation support, contributing to arbitration, regulatory proceedings, and high-stakes commercial disputes across jurisdictions.

Tier II firms in particular represent a diverse group of established advisory platforms that combine technical depth with growing market presence. These organizations are often engaged in complex disputes requiring specialized expertise, while continuing to expand their roles within the broader litigation and regulatory advisory landscape.

Tier classification reflects relative institutional positioning within the litigation support and disputes advisory sector rather than performance outcomes or legal determinations.

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Recognition

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