Post-mortemLessonRiskFraud and forensicsMarkets
One person holding both the trade and its settlement is the whole failure
Rogue Trader · 1999
The idea
Barings did not collapse because one trader took big positions. It collapsed because the same person could take the positions, book them, and settle them, with an error account in which losses could be parked. Every one of the controls you will be trained on in your first week, segregation of duties, independent reconciliation, limits enforced by someone who does not report to the trader, is a response to that structure. The film is the origin story of those rules. Read it as a diagram of a control failure rather than as a story about one man.
Whoever can take a position must not be the person who confirms it. Separate the hands, and the rest of the controls become possible.
When it works
Risk, operations and compliance questions, and any time a process lets one person both act and verify.
When it may fail
Segregation stops one kind of fraud. It does not stop collusion between two people, or a firm whose leadership has decided not to look, which is what the later scandals were about.
How to use it
Asked why a control exists, answer with the failure it prevents. For segregation of duties, the answer is Barings: the trader who could settle his own trades, and the account that hid the result.
Where it came from
Film Rogue Trader · 1999
What the source says. A single trader, an error account and a bank that could not reconcile its own positions: the case behind most segregation-of-duties controls.
Connected ideas
Says something similar
A risk limit is a decision about who has to be woken upA limit is an escalation rule: it decides when a problem must move up the firm, not just how big it may be.
Concepts
Put it to work on L3VLUP
More like this
- LessonMarketsBook
Traders who agree on nothing else all agree about risk control
The common factor among people who last is not how they pick trades but how they limit what a wrong one costs.
From Market Wizards · Jack D. Schwager
- TechniqueFraud and forensicsDocumentary
A short seller does fieldwork because the filings are the thing in doubt
When the filings are what is in doubt, the evidence has to come from outside them.
From The China Hustle · 2017
- Case studyMarketsSeries
A short squeeze is a funding problem before it is a price problem
Settlement takes days, and the collateral call arrives before the trade clears. That gap is where a squeeze does its damage.
From Eat the Rich: The GameStop Saga · 2022
- LessonFraud and forensicsSeries
Returns too smooth to be real are themselves the evidence
A track record with no bad months is a question, not a credential.
From Madoff: The Monster of Wall Street · 2023