2026.4.7 US Stock Market Brief

WTI crude plunged 14.81% to $95.76. Per CNBC, Trump announced a suspension of military strikes against Iran and ceasefire negotiations have begun. Polymarket’s “US-Iran ceasefire by April 7” contract settled at 100%. US futures jumped in the pre-market but gave back gains after the open, rallied again into the close, and finished nearly flat. S&P 500 closed at 6,616.85, up 0.08%. Nasdaq 22,017.85, up 0.10%. Dow 46,584.46, down 0.18%.

Oil dropping this much in a single day while indices barely moved tells you the ceasefire isn’t a straightforward positive for equities. Over the past few weeks as oil surged, the market already sold off through March to price in the energy cost shock. Today’s oil pullback looks more like the market clawing back the risk premium it overpaid, not a new bullish catalyst.

VIX rose 6.66% to 25.8. A ceasefire headline should suppress volatility — VIX climbing instead signals the market doesn’t trust the ceasefire to hold. Per Wall Street CN, Netanyahu voiced support for Trump’s ceasefire decision but explicitly excluded Lebanon. Iranian media published all 10 ceasefire terms. The Senate Democratic leader publicly called it “Trump backing down.” Wall Street CN also reported Trump spoke separately with Pakistani and Israeli leadership before announcing the ceasefire. Polymarket prices a full resolution of the conflict by April 7 at just 46%, and by April 15 at 67%.

The 10-year Treasury yield sits at 4.34%. The dollar index fell 1.04% to 98.94. A weaker dollar and crashing oil prices showing up together makes sense — the ceasefire reduces safe-haven demand, pushing capital out of the dollar. But Treasury yields didn’t follow the dollar lower. March CPI prints this week, and March happened to coincide with the peak of the Iran conflict — energy prices spiked that month, so the month-over-month CPI reading is almost certainly ugly. Today’s oil crash doesn’t erase inflation pressure; the lag effect won’t show up until April’s data.

Sector divergence is interesting. Energy gained 0.80% on a day oil crashed — money betting on a mean-reversion bounce or bottom-fishing in oversold energy names. Tech up 0.48%, financials flat, and consumer sectors took the biggest hit: consumer discretionary down 1.16%, consumer staples down 1.69%.

Asia-Pacific reacted far more dramatically than US equities. Per Wall Street CN, the Nikkei surged 5%, Hang Seng 3%, Vietnam 4.3%. These markets were hit harder by the oil spike over the past few weeks and had more room to snap back. Iraq’s Islamic Resistance militia also announced a two-week operational pause — signs of geopolitical de-escalation are spreading.

Polymarket puts the probability of a US invasion of Iran before year-end at 26%, and US troops entering Iran by April 30 at 100%. The distance between “pausing strikes” and “permanent ceasefire” is vast. What would change the assessment: the Strait of Hormuz actually reopening to normal traffic AND WTI stabilizing below $90 — both need to happen simultaneously to confirm the ceasefire is real. Statements without strait passage mean oil can snap back at any time.