Brattle’s Securities Class Actions practice develops creative, rigorous analyses for clients navigating complex securities disputes. Our deeply experienced experts have spent decades navigating complex class actions worldwide. Their collective insights – drawn from high-stakes matters – enable us to deliver strategic, thoughtful, and innovative solutions.

Our experts support clients throughout the entire lifecycle of a case, from the earliest stages of an allegation – assessing case merits, potential exposure, materiality, and class certification – through investigations, liability analyses, damages calculations, expert reports, and testimony. We also support mediation and settlement negotiations.

Brattle experts have advised and testified in some of the most significant securities class actions for defendants and plaintiffs in the US, Canada, and Asia-Pacific, including the largest securities class action settlement in Australia. Our experts have a strong track record in class certification proceedings, summary judgment motions, and Daubert challenges.

Securities class actions present distinct challenges, and clients value our analytical rigor and novel thinking – including the latest statistical methods and econometric analysis – in constructing counterfactuals, evaluating market efficiency, analyzing evidence of price impact and loss causation, and assessing heterogeneity among class members when determining class certification. We are recognized as an industry leader in leveraging advanced technology, data analytics techniques, and robust valuation frameworks, and can identify the most credible methods for quantifying damages and analyzing large, complex datasets.

Our Focus:

• Accounting liability
• Assessing damages for Rule 10b-5, Section 11, and Section 12
• Class certification
• Confounding factor analysis and loss causation
• Digital asset and alternative securities investments
• Event studies (including use of high-frequency market data)
• Fundamental valuation analysis
• Market efficiency and trading behavior
• Materiality analysis
• Tracing of shares

View Securities Class Actions Interactive Brochure