# Operational due diligence: the checks that vet a manager before a dollar moves
For nearly two decades, Bernard Madoff's investment operation reported steady returns while using a tiny, unknown accounting firm called Friehling & Horowitz, run out of a strip-mall office in New City, New York. One accountant. Billions under "management." That single fact, spotted by a diligent allocator, would have ended the relationship before any money moved. It did not, and roughly $65 billion in fabricated account value evaporated in 2008.
This lesson walks the operational due diligence (ODD) checklist that catches exactly this. ODD is the review of a fund's non-investment machinery: who holds the assets, who prices them, who signs the checks. It sits apart from investment due diligence (which asks "is the strategy any good?"). ODD asks a colder question: "is this operation real, and can it be tampered with?"
Investment analysts fall in love with strategies. ODD teams are paid to be suspicious of everything else. At large allocators (pension funds, endowments, funds of funds), ODD often holds a veto: no matter how good the returns look, a failed ODD review kills the allocation.
The discipline hardened after 2008. Regulators responded too. In the US, the Dodd-Frank Act (2010) forced most hedge fund advisers to register with the Securities and Exchange Commission (SEC) under the Investment Advisers Act of 1940. In Europe, the Alternative Investment Fund Managers Directive (AIFMD, effective 2013) required a single independent depositary per fund to safe-keep assets and monitor cash flows. Both rules attack the same weakness Madoff exploited: nobody independent was verifying the assets existed.
The fund administrator is the independent firm that calculates the fund's net asset value (NAV), keeps the books, and processes subscriptions and redemptions. Think of it as an outsourced, independent accounting department.
The rule: the administrator must be independent, reputable, and actually doing the work.
Madoff's operation was effectively self-administered. He generated his own account statements. There was no meaningful independent party confirming that the securities on those statements existed.
What the ODD analyst does:
Red flag test: does the fund's scale match its service providers' scale? A $10 billion strategy audited by a three-person firm is a scale mismatch. That is the Madoff tell.
The SEC's own post-mortem is worth reading for how these signals were repeatedly missed: SEC Office of Inspector General report on the Madoff investigation.
NAV is the per-share value of the fund: total assets minus liabilities, divided by shares outstanding. Investors buy and redeem at NAV, so if NAV is wrong or fabricated, everything downstream is corrupted.
The core ODD principle: the party that manages the money should not be the party that prices it.
The reconciliation chain the analyst wants to see:
1. The prime broker or custodian (the bank holding the securities, for example Goldman Sachs, JPMorgan, or Morgan Stanley) reports the positions.
2. The independent administrator prices those positions using third-party market data.
3. The administrator strikes the NAV and reports it to investors directly, not through the manager.
When steps 1 to 3 involve three genuinely separate entities, faking returns becomes very hard: the custodian would have to lie about holdings, the administrator would have to lie about prices, and the auditor would have to miss both.
Suppose a fund reports:
NAV = (520 + 30, 50) / 5 = $100.00 per share
Now the ODD test. You ask the custodian to independently confirm the $520 million and $30 million. You ask the administrator to confirm they priced the positions using external data feeds (for example, exchange closing prices), not manager-supplied marks. If the manager "helpfully" provides their own prices for illiquid holdings, you flag it. Manager-marked illiquid assets are where inflated NAVs hide.
This matters most for hard-to-value assets: private credit, distressed debt, thinly traded derivatives. Estimates commonly cited put private-market and less-liquid strategies as a fast-growing share of alternatives allocations into the mid-2020s, which makes independent pricing verification more important, not less. Treat that trend as directional, not a precise figure.
Segregation of duties (SoD) means no single person can execute a transaction from start to finish. In fund operations, the person who initiates a trade should not be the person who confirms it, who moves the cash, and who reconciles the account.
Madoff controlled all of it. Trade "execution," record-keeping, and reporting sat inside one entity under one man. There was no internal wall.
What the ODD analyst probes:
AIFMD's depositary requirement in Europe is essentially SoD written into law: an independent depositary must monitor all cash movements and confirm asset ownership. In the US, the SEC custody rule (Rule 206(4)-2 under the Advisers Act) requires client assets to be held by a qualified custodian and, in many cases, verified by a surprise annual exam from an independent accountant.
Knowledge check
1. What fundamental question does operational due diligence (ODD) seek to answer, in contrast to investment due diligence?
2. Why do large allocators typically give their ODD teams a veto over allocations, separate from the investment team?
3. The Madoff case is used to illustrate which core ODD principle?
4. Select ALL correct answers about the role of a fund administrator in operational due diligence.
Select all the correct answers.
5. Select ALL correct answers about the post-2008 regulatory responses described in the lesson.
Select all the correct answers.
A real ODD review is not three checks; it is a document trail that must all agree. The analyst collects:
The Madoff case failed on every line. One entity did nearly everything, the auditor was a shell, the returns were implausibly smooth, and account statements came from Madoff himself. Any one of these was a stop signal. Together they were deafening.
ODD also borrows one number from investment analysis: return consistency. Madoff reported gains in almost every month across bull and bear markets. A useful sanity check is the Sharpe ratio (return above the risk-free rate divided by volatility). Absurdly high, stable Sharpe ratios that never dip in market crashes are not skill; they are usually smoothed or fabricated marks. ODD treats an "impossibly good" track record as a reason to dig into pricing, not to celebrate.