

Financial Services and Securities Litigation
Allen & Overy’s market-leading Financial Services and Securities Litigation practice acts for some of the world’s leading financial institutions and financial services companies on complex, high-stakes contentious issues.
Whether working on cases involving mergers and acquisitions, commercial contracts, securities or insolvency, our specialist litigators take a practical and commercial approach to resolving disputes as efficiently and effectively as possible.
We provide first-rate sector, product and transaction knowledge aligned with our pre-eminent global finance practice, drawing on our unrivalled banking, capital markets and derivatives practices in the world’s main financial hubs.
Our dedicated Financial Services and Securities litigation team works closely with our transactional specialists to give clients an edge in disputes, and this regular collaboration allows us to identify and pre-empt regulatory and sector trends in order to protect clients from future business risks. We act for market leading investment banks, asset managers, hedge funds, private banks and retail banks.
Our work includes:
- Acting for BNP Paribas in class action litigation in the U.S. District Court in the Southern District of New York, involving claims that some of the biggest banks in the world manipulated the global foreign exchange (FX) market.
- Acting for an American investment bank in U.S. litigation in which we won dismissal of RICO and common law claims arising from the institution’s provision of banking services to the Bernard L. Madoff firm.
- Advising an executive of a global financial institution on defending fraud allegations related to subprime mortgages before the SEC and U.S. Senate committee.
- Acting for four banks in successfully defending against misrepresentation claims brought by Marme Inversiones regarding the EURIBOR benchmark, seeking to rescind interest rate swaps or recover damages in excess of EUR996 million.
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News and insights

Publications: 29 September 2023
Changes to Singapore selling restrictions for the wholesale debt market
The MAS issued a Notice on Business Conduct Requirements for Corporate Finance Advisers on 21 June 2023 that, among other things, imposes a requirement on relevant persons advising on corporate…

Publications: 19 January 2023
Episode 4: Deconstructing Crypto - The Post-FTX Episode
Following the indictments of senior FTX executives, two guilty pleas and related enforcement actions by the U.S. Securities and Exchange Commission and Commodity Futures Trading Commission, the…

Publications: 05 December 2022
Episode 3: Deconstructing Crypto - A Requiem for Crypto?
Severe liquidity issues continue to plague large digital asset trading platforms. Most recently, FTX and its affiliated trading arm Alameda filed for protection under chapter 11 of the U.S. bankruptcy…
Recognition
The quality and thoroughness of the advice and guidance has been exemplary and has given me a great deal of confidence in acting based on that advice and support.
Chambers UK 2020, Financial Services, Contentious Regulatory
Our experience with them is first class,"a source reports, adding: "The team do a fantastic job in explaining situations and their complexities.
Chambers UK 2020, Banking Litigation
Strong multijurisdictional capabilities complement its extensive regulatory practice, which includes a significant focus on financial services disputes.
Chambers New York 2018, Litigation: General: Highly Regarded
Compact contract
