The fragile optimism in markets hangs in the balance

Markets turned cautious as oil prices rose amid de facto closure of the Strait of Hormuz, denting a recent, fragile risk-on mood. S&P 500 futures fell about 0.5% after overnight headlines and talk of stalled US–Iran talks; investors face heightened geopolitics with no ceasefire deadline from the US and Iran refusing talks while a naval blockade persists. The near-shutdown of vessel traffic through the Hormuz chokepoint is tightening global oil supply, reinforcing upside pressure on energy prices and increasing the risk that central banks will remain hawkish or postpone rate cuts. Overall, the piece frames current optimism as precarious and prone to reversal on further negative headlines, implying increased volatility and downside risk for equity markets.