Finance
Portfolio Loss Risk Calculator
Combine a volatility-based market loss estimate with explicit concentration and liquidity add-ons, then compare total planning risk with a portfolio risk budget.
RISK BUDGET CONTROL
Translate three different exposures into one escalation record
This page is for a policy question: does the portfolio fit within an approved dollar risk budget after recognizing leverage, a dominant position, and liquidation friction? The add-ons are intentionally visible so reviewers can replace them with institution-specific rules.
CURRENT DECISION RECORD
Risk budget component ledger
Every row is generated from the current inputs and reused by Copy, TXT, and the page-specific PDF.
| Component | Amount ($) | Portfolio value (%) | Rule or status |
|---|
CURRENT CALCULATION PROCESS
Formula, substitution, intermediate values, and reconciliation
total planning risk = V x leverage x sigma x sqrt(h/252) x z(c) + concentration add-on + V x leverage x liquidity haircut
Waiting for valid inputs.
USE STEPS
Five steps for a budget review
- Set the current net asset value and gross exposure multiple.
- Choose volatility, confidence, and horizon consistent with the risk policy.
- Measure the largest economic position after looking through funds and derivatives.
- Apply a liquidation haircut based on market depth and the decision window.
- Compare total risk with budget, export the components, and route any breach to the named owner.
FOUNDATIONS
Five risk-budget building blocks
Gross leverage
Gross exposure can amplify both market movement and liquidation cost even when net directional exposure looks small.
Market component
The base component is a normal percentile loss scaled to the selected horizon.
Concentration add-on
A dominant holding receives a visible surcharge because diversification assumptions can fail around one issuer or theme.
Liquidity add-on
A haircut recognizes that recorded prices may not be obtainable when positions must be sold.
Risk budget
The budget is a governance capacity, not an estimate of the worst possible loss.
DEEP ANALYSIS
Three investigations behind a breach
Decompose before de-risking
A high total can come from leverage, one position, or poor liquidity. Cutting the wrong exposure may reduce expected return without resolving the component that caused the breach.
Policy coefficient ownership
The 20% threshold and graduated 50% maximum concentration rate are page assumptions, not universal law. A committee should approve its own thresholds and preserve the rationale.
Feedback under stress
Volatility, correlation, concentration, and liquidity can worsen together. Run a combined stress case rather than treating each current input as independent and stable.
DECISION CASES
Two routes to the same utilization number
Leveraged diversified fund
A market-neutral fund has no single holding above 8% but 3.5x gross leverage. Its breach is driven by market and liquidity components. The response focuses on gross books and exit capacity rather than issuer limits.
Unlevered concentrated treasury
A corporate treasury has 1x leverage but 55% in one sector ETF. Its concentration add-on dominates. Replacing a small liquid holding would not address the policy problem; reducing or hedging the concentrated sleeve might.
TERMS
Risk budget glossary
- Gross exposure
- The sum of absolute long and short economic exposures before netting.
- Gross leverage
- Gross exposure divided by portfolio net asset value.
- Concentration
- The share of value or risk attributable to the largest economic position.
- Liquidity haircut
- A planning deduction for the gap between marked value and executable liquidation value.
- Risk budget
- The approved amount of modeled risk the portfolio is allowed to consume.
- Budget headroom
- Risk budget minus total planning risk; a negative value signals a breach.
EVIDENCE
Document the breach trail
Retain holdings and look-through date, gross exposure method, volatility window, confidence and horizon policy, concentration mapping, liquidity evidence, budget approval, sensitivity cases, and the person authorized to accept or remediate a breach.
LIMITS
Planning-model boundaries
- The market component inherits normality and square-root-of-time assumptions.
- Concentration and liquidity formulas are disclosed policy heuristics, not universal empirical laws.
- Components are added linearly and may miss nonlinear stress interaction.
- Marked portfolio value may differ from realizable value, especially during forced liquidation.
Disclaimer: Adapt limits and coefficients to documented governance and seek qualified investment and legal review.
SOURCES
Investor-risk and statistical references
FAQ
Questions about the combined risk score
Is total planning risk a regulatory VaR?
No. It is a transparent internal planning measure with page-specific add-ons.
Why add liquidity instead of changing volatility?
Keeping it separate shows whether the decision is driven by market movement or execution friction.
Why is the concentration threshold 20%?
It is a disclosed default for this calculator, not a universal safe level. Replace it during root customization if policy requires.
Can headroom be negative?
Yes. Negative headroom quantifies the amount by which current modeled risk exceeds budget.
Should derivatives use market value or notional?
Use a consistent economic-exposure method approved by risk governance; raw market value can understate derivative leverage.
Does diversification eliminate liquidity risk?
No. Many positions can depend on the same buyers or funding channel during stress.