Wall Street Trading Desks Rewrite Stocks Playbooks on US-Iran War

Major Wall Street banks are rapidly reshaping investment strategies in March 2026 amid escalating US-Iran tensions, prioritizing geopolitical resilience over traditional growth plays. Bank of America’s macro desk is pushing “HALO” stocks—hard assets with low obsolescence risk—to shield portfolios from volatility tied to conflict-driven supply chain and inflation shocks. Goldman Sachs is advocating a targeted “geopolitical basket” heavy on defense contractors, oil producers, and tanker firms, betting on direct beneficiaries of heightened military and energy demand. Barclays traders are urging a return to US megacaps, reversing recent underweight positions as investors seek stability in familiar large-cap leaders amid market turbulence. The shifts reflect a broader pivot to “quality” assets—defensive, liquid, and conflict-resistant—marking a abrupt departure from pre-war growth and tech-heavy portfolios.