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Securities Litigation Expert Witness for Class Actions and Complex Disputes

Dr. Pavithra Kumar works with securities litigation attorneys on both sides of a case. She runs the financial analysis – event studies, damages models, market efficiency – and explains it clearly in court.

Securities cases move fast, and the financial questions are rarely simple. A stock price drops after a disclosure. Investors claim they lost money because of something the company said or didn’t say. Someone has to figure out whether the price actually moved because of that disclosure, how big the damage was, and whether the market was even efficient enough to support the theory. That is the work of a securities litigation expert witness.

Dr. Pavithra Kumar has been doing this work for over 16 years. She holds a PhD in economics and a CFA, and she has worked on some of the largest and most contested securities cases in the country. Her work covers event studies, market efficiency analysis, investor damages models, and trading pattern analysis. She puts her findings in plain language so judges and juries can follow the reasoning, not just the conclusion.

She works for attorneys on both sides. That independence matters in court. It also means she understands how the other side will come at the same numbers, and she builds her analysis to hold up when that happens.

What She Works On

Securities Fraud Class Actions

When investors claim a company’s false statements cost them money, the case usually turns on a few core questions: did the stock price go up because of the misrepresentation, and did it drop when the truth came out? Dr. Kumar answers those questions. She has supported securities fraud litigation cases from the early assessment stage through trial, working on both class certification and damages.

Event Studies and Price Impact

An event study is how you prove - or challenge - whether a specific disclosure actually moved a stock. Courts rely on this analysis heavily in securities class actions. Dr. Kumar has conducted event studies in some of the most contested securities litigation cases in the country, and she knows how to defend them when opposing counsel pushes back.

Market Efficiency

To certify a class in a securities fraud case, plaintiffs generally have to show the stock traded in an efficient market. That means looking at trading volume, analyst coverage, how fast the stock responded to news, and several other factors courts examine closely. Dr. Kumar does this analysis regularly and has a track record of producing opinions that survive Daubert challenges.

Insider Trading

Insider trading cases are about context as much as data. Dr. Kumar looks at what was known, when it was known, and whether the trading pattern makes sense given that timeline. She has worked on these matters for securities and shareholder litigation attorneys on both sides of the table.

Structured Products and FINRA Arbitration

Not every case involves a publicly traded stock. Dr. Kumar also handles matters involving derivatives and complex financial instruments. She supports securities litigation and arbitration proceedings, including FINRA disputes, where the issues and procedural rules are different from standard federal court cases.

Testifying and Consulting – She Does Both

Some attorneys need a testifying expert. Others need someone in the background – reviewing the opposing expert’s report, spotting the weak points, and helping counsel prepare for deposition. Dr. Kumar is used to both roles and switches between them based on what the case
needs.

The work typically includes:
  • Event studies and stock price movement analysis
  • Market efficiency opinions for class certification
  • Investor damages models
  • Trading pattern and liquidity analysis
  • Review and rebuttal of opposing expert analysis
  • Deposition preparation and case strategy support

Why Attorneys Work With Dr. Kumar

What attorneys need

  • Expert who can testify and consult
  • Analysis that survives Daubert
  • Testimony a jury can follow
  • Works for plaintiff and defense
  • Experience beyond plain equities

What she delivers

  • Available for both roles
  • Peer-reviewed, clearly documented
  • Plain language, no loss of precision
  • Independent — retained by both sides
  • Derivatives and structured products too

Frequently Asked Questions

What does a securities litigation expert witness actually do?
They handle the financial side of the case. That means running event studies, building damages models, analyzing market efficiency, and explaining all of it clearly in a report and on the stand. The attorney argues the law. The expert explains what the data shows.
Do you work for plaintiffs and defendants?
Yes. Dr. Kumar works as an independent expert, which means she has been retained by securities litigation law firms on both sides. The quality of the analysis stays the same regardless of who is paying for it.
When should we bring in an expert?
As early as possible. The best securities litigation firms bring in an expert before the complaint is filed, so the financial analysis shapes the legal strategy from day one. Waiting until the report deadline usually means rushing work that deserves more time.
What is securities litigation and arbitration?
Securities litigation is what happens in court - usually federal court for fraud claims. Securities arbitration, most often through FINRA, handles broker-dealer disputes outside of court. The financial analysis overlaps, but the process and rules are different. Dr. Kumar has experience in
both settings.
What makes an expert credible under Daubert?
The methodology has to be reliable, peer-reviewed, and accepted in the field. Dr. Kumar builds her analysis on standard econometric methods, documents everything clearly, and addresses the limitations of her approach head-on. She does not leave those openings for opposing counsel to find.

Working on a securities matter? Reach out.

Consultations are confidential. No pressure, no obligation – just a straight conversation about whether Dr. Kumar is the right fit for your case.