Risk review and stress simulation

EN source master · P06-L08 · 30 minutes estimated · needs_review

Offline formative study. No wallet connection, real funds, private keys, signatures, live trade or personal portfolio inputs. Visuals are specifications. This source master remains needs_review; completing the formative exercise does not issue certification.

A stress table can reveal a plan's fragility while still omitting failures that cannot be expressed by a price shock.

Freeze the fictional inventory

The desk has1000 units: A 500,B300,C200, no borrowing or new cash flows. These are assigned exposure values, not recommended allocations. Each scenario applies a stipulated percentage change and total exit cost. Use starting values consistently and avoid adding net costs twice.

Calculate scenarios, not predictions

Scenario1 has A−20%,B−30%,C−5%, plus10 units total exit cost. Scenario2 uses−50%,−40%,−20%, cost 20. These are deliberately adverse teaching scenarios; no likelihood or coverage probability is supplied. Sample association cannot authenticate future correlations [CORR].

Add operational dependencies

C's fictional redemption route can be unavailable. The result should mark200 units inaccessible under that variant, not silently assume an executable sale or automatically write its market value to zero. Separate valuation, realizability and permanent loss. An eventual recovery value remains UNKNOWN.

Review the model

Hypothetical fills and stops have limitations [CFTC]; margin rules can change for products where they apply [MARGIN]. Here no margin exposure is supplied, so do not invent a liquidation event. Journal the scenario assumptions, losses, unavailable exits and unmodeled factors such as wider spreads, venue failure and correlated gaps. A finite scenario set is not a worst-case bound or a recommendation to act.

• Stress scenario: assigned adverse changes without probability claim.
• Realizability: ability to convert a position under stated conditions.
• Inaccessible balance: unavailable redemption, not automatically zero value.
• Model limit: omitted mechanism or uncertain assumption.

ILLUSTRATIVE inventory A 500,B300,C200. S1 returns−20/−30/−5%, total exit cost 10. S2−50/−40/−20%, cost 20. Operational variant O: C route unavailable; retain inaccessible pre-stress200 separately and do not apply a fabricated execution to it.

Evidence panel with S1/S2 contribution tables and O inaccessible lane; distinguish modeled residual equity, marked value and executable proceeds. No personal-data inputs or probability shading.

Calculated losses under the supplied price/cost assumptions and explicit inability to price O's execution.

Actual exit capacity, scenario probabilities, a maximum possible loss or a suitable allocation.

• OBSERVED: FIX-P06-L08 supplies inventory500/300/200.
• INFERRED: S1 residual 790 under complete stipulated exits.
• UNKNOWN: realizable C proceeds in O.
• INSUFFICIENT EVIDENCE: two scenarios bound every future loss.

• Averaging returns without weights.
• Treating inaccessible balance as sold.
• Calling selected stress the worst possible case.

Compute S1/S2 loss contributions and residuals. Compare each to a separately assigned250-unit loss budget. Write an O report without guessing C proceeds, then list three missing assumptions and a fictional review action.

Deliver calculations or annotations, claim/source table and limitations. Suggested allocation: study 12 minutes, exercise 8, correction/quiz 10; estimate subject to calibration.

• Use starting exposure weights.
• Include one total cost term.
• Separate price loss and exit outage.
• Document unmodeled factors and review.

A risk review combines weighted arithmetic with exit and operational limits. Unpriced failures remain explicit instead of becoming invented fills.

• Stress a supplied fictional portfolio with costs.
• Document unpriced operational failures and model limits.

Program sequence complete. Return to curriculum for Controller-approved progression; no new program is implied.

NONE in the authoritative catalog. The supplied offline fixture/package is sufficient; no paid feature or unverified Production capability is required. Lab/certification metadata denotes downstream associations, not access gates or live awards.

• [CFTC] CFTC — Trading systems advisory — Hypothetical execution, cost and stop-order limitations; no profit guarantee. Checked 2026-10-01; locator turn12view1.
• [CORR] NIST — Linear correlation — Correlation describes association in paired data; no causal or future guarantee. Checked 2026-10-01; locator turn11view3.
• [MARGIN] CME — Understanding margin changes — Initial and maintenance margin differ and requirements can change; fictional venue rules are not CME rules. Checked 2026-10-01; locator turn11view6.