Markets whipsaw on Iran deadline

Wall Street spent Tuesday trading the same question over and over: would President Donald Trump actually follow through on his threat to hit Iranian power plants and bridges if Tehran did not reopen the Strait of Hormuz by 8 p.m. Eastern. That deadline landed on a market already strained by weeks of war, disrupted shipping, and oil above $100. The result was a day of violent reversals. The S&P 500 dropped as much as 1.2% before clawing back to a gain of 0.08%. The Nasdaq also edged higher, while the Dow finished lower (apnews.com, cnbc.com). That rebound looked calm on the surface. It was not calm underneath. Reuters reported that global equities were slightly lower and U.S. crude traded above $115 a barrel as investors waited for the evening deadline, a sign that the real action was not in where stocks closed but in how fast money moved between stocks, oil, and other havens during the day (kitco.com, srnnews.com). Markets were trying to price an event that had no stable probability. Either the Strait would reopen and some of the energy panic would fade, or the war would widen and the shock would deepen. The Strait matters because it is not just another shipping lane. Roughly one-fifth of the world’s oil supply normally moves through that narrow waterway. Since the war escalated in late February, traffic has collapsed. A CBS report citing Eurasia Group said transits fell from about 130 vessels a day in February to just six in March, while at least 70 empty crude tankers piled up off Singapore and Malaysia waiting for cargoes they could not safely collect (cbsnews.com, cnbc.com). By Tuesday morning, even partial reopening was still selective and political. TIME reported that Malaysia had secured passage for stranded ships, while most of the world remained effectively shut out (time.com). That is why oil kept rising even as hopes for a deal flickered. Benchmark U.S. crude was up 1.3% Monday to $113.09, and Brent rose to $110.37, far above the roughly $70 level from before the war. U.S. gasoline averaged $4.12 a gallon, up from $2.98 before hostilities began (cbsnews.com). The market is no longer reacting only to the possibility of a blockade. It is reacting to the physical lag that comes after one. Tankers need weeks to return. Damaged refineries need months to repair. Even a ceasefire does not refill a supply chain on command (cnbc.com, cbsnews.com). By late Tuesday, the political story shifted again. The Associated Press reported that Trump pulled back from his immediate threat, saying he would hold off for two weeks if Iran accepted a ceasefire and reopened the strait. Iran’s Supreme National Security Council then said it had accepted a two-week ceasefire, at least provisionally (apnews.com, spectrumlocalnews.com). That may explain why stocks managed to recover. It does not erase what Tuesday showed. A single deadline, tied to a single chokepoint, was enough to knock the S&P 500 down hard, push oil higher, and leave traders staring at the clock until the last hour.