Scenario analysis, signposts and acting on geopolitical risk

In short

• Scenario analysis evaluates portfolio outcomes across possible states of the world: qualitative (base case, then upside and downside) or quantitative (stylised one-factor sensitivity, or stress tests based on extreme past events). Beware groupthink.
• A signpost is an indicator, market level, data point or event signalling that a risk is becoming more or less likely. Traffic lights: green (no action), amber (caution, prepare), red (act on the plan).
• Separate signal from noise: policy changes matter more than politics. Warning combinations: high inflation + falling employment (unrest); a pegged currency + collapsing export values (policy change).
• High-velocity risks show up as quick moves in commodity, FX, equity and bond prices; low-velocity risks lower revenues and raise costs for longer. Persistent risk raises the discount rate, one reason emerging and frontier assets trade at a discount.
• A Geopolitical Risk Index built from news coverage found that high risk lowers investment, employment and stock prices, and that the threat of events weighs more over time than the events themselves.
• Act top-down (asset allocation, country weights) or at portfolio level (a factor in multifactor models); the right response depends on objectives, risk tolerance and time horizon.