Counterparty exposure, as a position in its own right

Module 1 said an exchange balance is a claim on a company. This lesson sizes the claim as what it is: a position, with a size, a risk, and a documented history of going to zero.

The position, measured

A £15,000 balance on an exchange against a £50,000 account is 30% counterparty exposure - a 30% position in 'this venue stays solvent', held whether or not the trader thinks of it as one. The equity track sized single-name risk because a stock can go to zero; a failed exchange is that risk, larger, because it takes every coin on the venue at once - not one position to zero, but all of them. The 2014 and 2022 failures (module 1) were exactly this: customers who never sized their venue balance as a position discovered its size when it became its loss.

Sizing the counterparty

• A per-venue cap, like the equity per-name cap: no single exchange holds more of the account than a total loss there could be survived - the halving lesson's cap, applied to the venue instead of the name.
• Trading float only on venues: the coins needed to trade, sized as counterparty exposure; the rest in self-custody, where there is no counterparty - module 1's split, now a sizing rule.
• Venue quality as the risk grade: reputable, audited, regulated-where-possible venues are lower-risk counterparties than fringe ones - the position's risk grade is the venue's integrity, read as module 2 read volume integrity.

The uncomfortable arithmetic

Active trading needs coins on venues, and coins on venues are counterparty risk - so the trader cannot reduce this position to zero without ceasing to trade. The honest response is not elimination but sizing: the trading float capped per venue, the total on-venue balance capped against the account, the rest in self-custody, and the split reviewed like any position because it is one. Crypto is the only asset class where the exchange itself is a sized risk - the clearing house that guaranteed the futures trader is exactly what the crypto trader does not have, and this lesson is the price of its absence.