Model governance: who can change what

Graduate · enrolled learners

This lesson opens with Platinum Partners, 2016.

What happened

Platinum Partners was a hedge fund that held illiquid, hard-to-price assets, the kind with no observable market quote, and it systematically overvalued them to report smooth, attractive returns and to keep meeting investor redemptions. Because those assets had no market price, their value came entirely from the fund's own marks, and no independent governance constrained who set those marks or how, so the people who benefited from a high value were the people deciding the value. The scheme held until the fund could no longer meet redemptions and collapsed, and its founders were convicted of fraud in a matter regulators described as running to roughly a billion dollars of overstated value. Nothing in a pricing model failed in a technical sense; the failure was that the value was self-assigned, produced by insiders with every incentive to inflate it and no independent check to stop them. A number that comes from a mark rather than a market is only as honest as the governance over who is allowed to set it.

The decision point

When an asset has no observable market price, its value comes from a mark, a number someone assigns using a model or a judgment, and the entire integrity of that value rests on the governance over who sets it and who can change it, because a mark set by the person who benefits from it is not a valuation but a wish. Platinum Partners is the case: a fund holding illiquid assets with no market price overvalued them to report smooth returns, with no independent governance of who set the marks, until it collapsed and its founders were convicted in a fraud regulators measured near a billion dollars. This extends the prior lesson from models that trade to models that value: in both, the danger is not the mathematics but who controls it, and for a valuation the control is who assigns the mark and whether anyone independent checks it. A value that comes from a market is disciplined by other participants who will trade against a wrong price; a value that comes from a mark has no such discipline unless governance supplies it, so an insider free to set the mark will, under pressure, set it where they need it rather than where it is. So the discipline is to demand independent governance of any model-derived or marked value: to separate the people who benefit from a value from the people who set it, to require independent verification of illiquid marks against real evidence, and to distrust smooth reported returns from hard-to-price assets, because Platinum Partners shows that a valuation no independent party checks is whatever the insider setting it says it is, right up until the day it cannot be sold for anything close.

Orientation and Year One are open: anyone can read them without an account. From Year Two onward the lessons are for enrolled learners, because progress through the later years only means anything if it is tracked against a record.

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