Institutional-gradestress testing.

Powered by the mathematical frameworks used by major insurers and investment banks, Prometheus exposes the hidden tail risks and the inter-dependencies that can break a portfolio in a crisis.

27
Calibrated risk factors
351
Correlation pairs
50 years
Empirical data
1,000,000
Paths per simulation

Two minutes · what the engine does

A linear projection is not a forecast.

Market moves are not normally distributed, inflation shocks are not static and your wealth does not move in a symmetrical bell curve. Treating linear projections as a forecast is a systemic failure of risk planning. Prometheus applys rigorous non-linear frameworks to chart the full density of your net worth and reveal how your portfolio reacts when the storm hits.

Density of year-end wealthWhat naive models hide
£150k£200k£250k£300k£350k£400kNAIVE THIN TAILEDFAT TAILED · REAL19× more likely to land in the tail

Quantify the dark horizon.

Tail Drivers isolate the worst outcomes and rank every factor by how much risk they carry, market drawdowns, inflation surges, yield shocks, even your life risks. You stop guessing what's risky and see what actually brakes you.

Tail DriversWhat actually drives your ruin
shows upactually causes
SP500 equity
41%
Inflation (1Y)
18%
Career loss
9%
UK 10Y yield
6%
UK property
3%

What if I shift £100K? Insure a risk? Rebalance my portfolio?

Pull a lever and Prometheus re-calculates on the same one million paths in milliseconds, no re-simulation, no guesswork about whether the new answer is comparable to the old one. See the exact shift across your wealth distribution percentiles.

What-If LeversShift cash → equities: +£100K
£150k£200k£250k£300k£350k
Baselinemedian £260k · p5 £190k
+£100K → equitiesmedian £282k +£22k · p5 £175k -£15k

Prepare for the catastrophes that aren't in the markets.

Market drawdowns aren't your only risk. Prometheus models personal catastrophes, structural damage, sudden job loss, acute medical events, legal liabilities, with frequency and severity distributions and the insurance policies that absorb them, embedded in the same correlated million-path simulation.

Personal Catastrophe LedgerFrequency, Severity, netted by policy
Career loss
Frequency1 every 8 yearsSeverity£15k – £45k
Insured
Acute medical event
Frequency1 every 15 yearsSeverity£3k – £30k
Insured
Legal liability
Frequency1 every 30 yearsSeverity£5k – £40k
Uncovered

Knowing your risk is the easy part.

A diagnosis without a prescription is just anxiety. The Resilience Plan inverts the tail analysis: it tests every lever you actually control, insuring a risk, shifting the portfolio, repositioning bonds, freeing up property, trimming spend, then prices each one honestly, what it buys in your worst case against what it costs in a typical year.

Resilience PlanThe cheapest ways to cut your ruin risk
01
Insure career loss£820/yr premium
3.1%
02
Shift 20% into 10y bondsCosts upside
3.4%
03
Trim discretionary spend 15%No financial cost
3.6%

Risks don't move alone.

When equities collapse, currency weakens, inflation surges, and unemployment rises together. Prometheus calibrates the full dependency matrix from decades of joint historical data; every simulated path inherits these systemic co-movements. A single market shock ripples through your career, your property, and your portfolio in a single draw. This structural realism is what makes our left tail statistically accurate, not just conservative-by-luck.

Calibrated Correlation Matrix27 factors · 351 pairs
SP500
FTSE
USDGBP
UK 10Y
UK Infl
UK Prop
Career
SP500
1.00
0.63
-0.26
0.06
0.16
0.13
-0.22
FTSE
0.63
1.00
-0.17
0.36
0.58
0.14
-0.12
USDGBP
-0.26
-0.17
1.00
-0.15
-0.12
-0.21
0.15
UK 10Y
0.06
0.36
-0.15
1.00
0.67
0.13
-0.12
UK Infl
0.16
0.58
-0.12
0.67
1.00
0.25
-0.17
UK Prop
0.13
0.14
-0.21
0.13
0.25
1.00
-0.32
Career Loss
-0.22
-0.12
0.15
-0.12
-0.17
-0.32
1.00

Built for those who measure twice.