04/02/2026
After entering the year near record highs, most major U.S. stock indices declined in Q1. The Iran conflict became a defining macro catalyst, pushing oil prices sharply higher, lifting inflation uncertainty, and reinforcing a risk-off posture across markets in late February and March. Stocks ended broadly lower as buyers stages a moratorium. Energy and select consumer defensive stocks advanced while most others declined. The quarter saw higher day-to-day volatility, wider dispersion among sector, and a renewed premium for companies with pricing power and balance-sheet strength.
The Iran conflict fueled energy shock fears and risk-off sentiment. Oil prices surged as markets priced higher supply risk and shipping disruption risk, fueling inflation concerns and adding downward pressure to stocks and bond prices. In multiple sessions, headlines and shifting signals around possible ceasefire talks drove sharp intraday reversals in oil and broader risk assets. Oil became the main transmission channel from geopolitics to markets as stocks sold off when oil spiked and ceasefire prospects looked less certain. Treasuries also weakened at times as investors weighed an inflation shock versus a growth shock.
Continue to read GPM's Q1 2026 Quarterly Summary here: https://www.gpmgrowth.com/newsletter