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Prime brokerage and equity finance disputes are high-stakes litigations, which often involve unique and complex topics, including margining, agreements, disclosures, collateral, stock lending, funding, unusual regulations, or investor relations, with the most demanding secretive participants. Our work includes expert reports, depositions, and testimony with clear, technically sound market analysis designed for litigation.

Scope of Expert Services in Prime and Equity Finance Disputes

Our independent experts provide analysis and support in disputes involving prime brokers, equity finance desks, hedge funds, and investors. We evaluate margin frameworks, financing structures, collateral management, risks, supervision and governance, to determine what was agreed, what was known, and what was done, what fits regulations and industry standards. For complex disputes, we reconstruct decision paths from communications, risk assessments, margin, financing, trade records, and the intimate knowledge of participants and practices.

Our work typically relies on:
  • Prime brokerage agreements and margin annexes
  • Stock lending and securities financing arrangements
  • Collateral management and margin call procedures
  • Deep knowledge of margin regulations, capital requirements and collateral management
  • Examination of risk escalation and supervision practices
  • Review of portfolio risk analysis: stress tests, concentration analysis
  • Representations made by/to managers or investors

How We Assist: Our Approach to Prime Brokerage and Equity Finance Analysis

Prime brokerage operates within a unique framework of technical rules, explicit regulations, unwritten norms, documentation layers, and operational practices that are rarely visible outside the industry. We translate this framework for the court. Our methodology combines:
  • Review of governing agreements and annexes
  • Reconstruction of events, margins, collateral, and financing flows
  • Review of contemporaneous risk reporting and limit monitoring
  • Assessment of supervision and escalation procedures
  • Comparison against accepted market practice at the time
Where discovery includes trade history, we analyze strategy, risks, collateral, margin notices, and exposure trajectories to identify inflection points and decision failures.

Recognized Financial Markets Expert Witness

Questions Commonly Examined in Our Analysis

Representative Matters

Matter 1

Hedge Fund v. Global Prime Broker

Matter type: Court litigation

Facts:A discretionary/event arbitrage hedge fund operating a concentrated long–short equity was
forced into liquidation by its prime broker in a period of market stress. The fund alleged that the
increased margin requirements were unnecessary and contrary to onboarding agreements. The
prime broker asserted contractual rights and commercial reason under the prevailing market
conditions.

Core Questions:

onboarding process & disclosures, risk assessment, margin and margin
methodology, monitoring, escalation, appropriateness of decision, allocation of responsibilities

Our work: we performed a deep review of the on-boarding process, margin methodology, risk
monitoring, risk governance, escalation procedures and senior management decisions.

Analysis:

The expert’s research highlighted the prime broker’s errors in assessing the fund’s strategy during onboarding. The prime’s choice of margin methodology would have been appropriate if it had been able to calculate them properly. Instead, due to technical glitches, the broker replaced it with another methodology, without disclosure. Unnecessary margins were imposed as a result, forcing the reduction of positions at the wrong timing and amplifying losses in a snowballing process.

Outcome:

The expert’s report demonstrated that the decision to force the fund into liquidation was due to the prime’s mismanagement of risks, methodologies, inappropriate escalation and a cascade of erroneous decisions. It strongly supported the plaintiff’s views of the facts.

Matter 2

Camelot v. Main Global Banks

Matter type: Court litigation (prominent).

Facts: Archegos was a heavy investor in Viacom, pushing its price up. When investment bankers announced a secondary issuance, the telecom stock fell a bit, impacting Archegos’ financials. Prime
brokers asked the fund for additional margins, which it was unable to provide. The same few global banks were both the investment bankers taking investor’s firm bids in Viacom shares and the fund’s prime brokers. The departments didn’t know of each other’s activities. The top management, once informed, had to choose. The bankers had to pursue the bidding for legal reasons and prevent the
prime brokers from liquidating shares, but that would have created large losses in prime. The prime brokers needed to liquidate Archegos stock positions to limit their losses, but that would
hurt stock investors. The banks eventually protected their interests. Prime brokers liquidated Archegos, hurting stock investors. Camelot, a Viacom investor, sued the banks to recover its losses
in the stock issuance.

Core Questions:

timing of events, which departments – at each firm – understood what and when,
industry standard in risk management in Prime.

Our work: After researching and finding the fund’s trading positions, we conducted an independent analysis focused on:

Outcome:

We provided a detailed chronology of events at each of the prime sides, highlight if the bank were (un)able or (un)willing to protect the stock investors, and if/how they breached investment banks standards and securities laws.

Related articles:

Litigation Deliverables for Prime & Equity Finance Disputes

Risk Narratives
Complex strategies, trading positions, market context, risks, disclosures, margins, regulations, monitoring, governance, liquidations

Management of capital
Risks, costs, regulations, margins, collateral management, weighted assets, stock loans, agreements, leverage

Chronologies
Market events, trading losses, decisions, chronologies and responsibilities, in unique and complex environments.

Insider knowledge
Intimate knowledge of margin regulations, of capital costs, or regulations, of key deciders, of the intimate working at each secretive prime brokerage activities.

Hedge funds
Investor relations, capital raising, stock lending & borrowing, agreements, funding, leverage, strategies, personalities and individuals.

Why Choose Navesink International

Senior practitioner-led analysis

Senior practitioner-led analysis

Every case is handled by senior industry professionals, with deep knowledge of all related issues, and is never delegated to junior staff.

Deep technical expertise (3)

Deep technical expertise

Deep experience across all products, strategies, styles, capital, and participants, from the most senior industry practitioners.

Litigation-ready work product

Litigation-ready work product

High-quality work product, designed to hold up under cross - examination with clear, insider, and rich content.

Attorney-focused collaboration

Attorney-focused collaboration

Attorney-focused communication and collaboration throughout the engagement, with dedicated and highly efficient professionals.

Discuss Your Prime Brokerage or Equity Finance Matter

If you are evaluating a dispute involving margin, securities financing, stock lending, or prime
brokerage supervision, we provide independent expert analysis grounded in real market practice

FAQs

Prime brokerage disputes are high-stakes litigations between global banks, hedge funds, and their
investors. They relate to unique topics in financial markets, including risk, supervision and
governance, margining and collateral management, funding and leverage, stock lending, custody,
cross-border tax, and the management of many other services. The industry standards and
regulatory requirements are also unique to this rarely visible part of the financial industry

The analysis examines onboarding and ongoing disclosures, margin methodologies, risk monitoring, escalation procedures, supervision decisions, timing of events, and whether liquidation decisions were consistent with agreements and industry standards.
Margin methodologies are defined by regulations. The selection and implementation of the methodologies are based on many factors, including the types of accounts, the nature of the assets, the risks, the activities and strategies, contractual agreements, as well as the market environment. They extend to many areas inside global banks, including balance sheet management and retail operations. Navesink’s experts have constructed the custom and complex systems underlying such activities, and have worked with all their users, senior management, and regulators.
Internal communications are reviewed to reconstruct chronologies, determine who knew what and when, assess escalation decisions, and evaluate whether risk assessments and actions were consistent with the available information
Responsibility is assessed by reconstructing risk assessments, margin demands, financing flows, supervision decisions, and escalation processes to determine whether losses resulted from appropriate procedures or from errors, mismanagement, or inconsistent practices.
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