One Week Into the Iran War: A Portfolio Playbook for Geopolitical Shock

What Has Happened

On February 28, 2026, the United States and Israel launched joint airstrikes against Iran targeting nuclear facilities, missile capabilities, and proxy infrastructure. Iran has retaliated with missile and drone attacks across the region and effectively closed the Strait of Hormuz to commercial shipping.

One week in, the conflict has escalated rapidly. Casualties exceed 1,000, hundreds of thousands are displaced, and the economic consequences are reverberating globally. Oil has surged past $100/barrel, equities have declined, and safe-haven assets — gold, Treasuries, the US dollar — have seen inflows.

This is not a theoretical risk scenario. It is a live crisis with uncertain duration and unpredictable escalation potential.

A Framework for Geopolitical Shocks

History offers several lessons about how markets process geopolitical crises. Not all crises are alike, but the pattern is consistent enough to provide guidance:

1. Markets Overreact in the First Week, Then Differentiate

The initial market response to a geopolitical shock is broad-based selling — investors reduce risk indiscriminately. Within 2-4 weeks, markets begin to differentiate: sectors directly affected by the crisis (energy, defense, airlines) remain volatile, while the broader market stabilizes as investors assess the actual economic impact.

The Gulf War (1991), the Iraq invasion (2003), and the Russia-Ukraine conflict (2022) all followed this pattern. In each case, broad equity indices recovered within 3–6 months of the initial shock, though specific sectors experienced lasting shifts.

2. Oil Price Spikes Are Inflationary but Typically Temporary

Geopolitical oil premiums tend to dissipate once the military situation stabilizes — even before it resolves. Markets price in worst-case supply disruption at the onset; as the actual disruption proves less severe than feared, the premium erodes.

The exception is a sustained physical supply disruption. If the Strait of Hormuz remains closed for weeks rather than days, the oil premium could persist and deepen, creating genuine stagflationary conditions.

3. Safe Haven Flows Reverse When Risk Appetite Returns

Gold, Treasuries, and the dollar have all benefited from crisis-driven safe haven flows. When the immediate military uncertainty diminishes — through ceasefire, diplomatic resolution, or simply the passage of time — these flows reverse. Investors who buy safe haven assets at the peak of crisis fear often find themselves holding depreciating positions when calm returns.

The Portfolio Playbook

What NOT to Do

Don't panic-sell equities. If your portfolio was appropriately constructed before the crisis, the correct response is almost certainly to hold. Selling equities after a sharp decline locks in losses and forfeits the recovery. Every major geopolitical crisis in the post-war era has been followed by a full equity recovery — the question is always timing, not direction.

Don't chase oil or defense stocks. Buying energy or defense stocks after they've already surged on the crisis captures the premium that has already been priced in. The risk/reward for tactical trades is poor once the market has processed the initial shock.

Don't assume the worst case. Markets reflexively price worst-case scenarios during crises: nuclear escalation, complete oil embargo, global recession. These outcomes are possible but not probable. Making portfolio decisions based on worst-case assumptions typically destroys more value than it protects.

What to Consider

Review liquidity. Ensure you have adequate cash reserves to cover 12–18 months of spending without needing to sell assets. Market dislocations can persist for quarters, and having liquidity eliminates the risk of forced selling at disadvantaged prices.

Stress-test spending plans. Our Sustainable Spending calculator can model scenarios where equity returns are negative for 1–2 years while inflation remains elevated — exactly the conditions a sustained conflict creates. Understanding whether your spending rate survives these conditions provides confidence to hold the course.

Evaluate tax-loss harvesting opportunities. The equity decline has created unrealized losses in many portfolios. Systematic harvesting of these losses — through direct indexing or strategic lot selection — generates tax alpha that compounds for years. Crisis-driven losses are among the most valuable because they tend to be large and concentrated.

Consider accelerating estate transfers. Depressed asset values are the best possible conditions for GRATs, installment sales, and other transfer strategies. A $10 million equity portfolio that has declined to $8 million can be transferred at the lower value — with the subsequent $2 million recovery occurring tax-free inside the trust.

Our GRAT calculator can model the probability of successful wealth transfer using current market volatility and the prevailing §7520 rate.

Maintain international diversification. The conflict is primarily affecting Middle Eastern energy supply and US defense posture. European, Asian, and other non-US markets are experiencing secondary effects — but some (particularly European defense) are actually benefiting from the crisis. International diversification provides genuine risk reduction during US-centric geopolitical events.

What We Are Watching

Ceasefire negotiations. Any credible diplomatic process would immediately reduce the geopolitical premium across all asset classes.

Strait of Hormuz status. The physical closure of the strait is the single most economically significant aspect of the conflict. If alternative shipping lanes prove viable, or if Iran allows limited commercial transit, the oil premium could moderate significantly.

Fed response. The FOMC must weigh inflation (elevated by oil) against growth (weakened by war spending and uncertainty). The March meeting will be closely watched for signals about how the Fed balances these competing concerns.

Humanitarian and political trajectory. The Iranian regime views this as an existential conflict. If the war intensifies or spreads to additional countries, the timeline for resolution extends — and so does the market impact.

Our Perspective

At Altar Rock, we have been through market crises before. The specific catalyst changes — a pandemic, a financial crisis, a war — but the principles remain constant:

Build your financial architecture before the storm. Families who entered this crisis with diversified portfolios, adequate liquidity, stress-tested spending plans, and established estate planning structures are well-positioned to weather it — and to capitalize on the opportunities that dislocations create.

Don't confuse volatility with risk. Volatility is the daily fluctuation in portfolio value. Risk is the permanent impairment of capital or the failure to meet financial objectives. A well-constructed portfolio experiences volatility during crises but does not experience permanent risk.

Stay disciplined. The hardest thing to do during a crisis is nothing. But for long-horizon investors with sound financial plans, disciplined inaction is almost always the correct response. The families who emerge strongest from crises are those who maintained their investment discipline when others abandoned theirs.