Portfolio Risk

Overview

Portfolio risk differs from the sum of individual asset risks because positions can offset or amplify one another. Correlation, leverage, common factors, liquidity, currency, duration, counterparties, and nonlinear payoffs determine aggregate exposure.

Diversification may fail during stress when correlations rise, market depth disappears, or several positions depend on the same collateral, venue, stablecoin, custodian, or protocol. Historical models may understate gaps and structural changes.

Managers should measure sensitivities, concentration, scenarios, stress loss, liquidity, and counterparty dependencies across consistent horizons. Limits and hedges need review against actual net exposure, including off-balance-sheet and contingent obligations. Governance should define who can approve limit breaches and temporary risk concentrations.

For Portfolio Risk, teams should measure unnecessary friction, exclusion, delay, privacy intrusion, failed recovery, and inconsistent treatment while preserving the safeguards needed for material financial and treasury exposure.

Portfolio risk is the combined uncertainty and potential loss across a collection of positions, considering concentration, correlation, liquidity, and interaction. Portfolio safety depends on interactions and common dependencies, not the number of assets or the apparent diversification of labels.

For Portfolio Risk, the assessment should evaluate the combined uncertainty and potential loss across a collection of positions, considering concentration, correlation, liquidity, and interaction. The assessment record should separate observed evidence supporting the combined uncertainty and potential loss across a collection of positions, considering concentration, correlation, liquidity, and interaction from assumptions, state the time horizon and existing controls, and identify who owns any remaining exposure. Monitoring should test whether the conditions described in the combined uncertainty and potential loss across a collection of positions, considering concentration, correlation, liquidity, and interaction have changed enough to require a new rating, treatment, or approval.