TL;DR

Iran had not delivered a formal response to the latest US peace proposal for the Strait of Hormuz conflict as of late Friday night. US forces disabled two Iranian oil tankers Friday afternoon and the UAE reported a fresh Iranian ballistic missile and drone attack. Markets closed the week at record highs on the strength of a blowout April jobs report, but a binary weekend outcome now looms over Monday's open. This is a scenario-by-scenario risk map for traders navigating the gap.

What Happened: Iran Peace Talks and Friday Escalation

The US and Iran have been negotiating through Pakistani and Qatari intermediaries since late March. On Friday, Secretary of State Marco Rubio said the US was "expecting a response today" from Iran on an interim deal to end the war, reopen the Strait of Hormuz, and begin rolling back Iran's nuclear program. President Trump told reporters Friday evening: "I'm getting a letter supposedly tonight."

That letter had not yet arrived publicly as of approximately 3:00 AM UTC Saturday. Iran's Foreign Minister Abbas Araghchi posted on X that Washington "opts for a reckless military adventure" every time diplomacy is near, after Centcom confirmed it had struck and disabled two unladen Iranian-flagged oil tankers attempting to breach the US blockade of Iranian ports in the Gulf of Oman. Video released by the US military showed fighter jets striking the tankers' smokestacks.

Earlier Thursday night, Centcom said it intercepted Iranian attacks on three US Navy destroyers transiting the Strait and struck Iranian military facilities in response. The UAE reported three people were wounded in a fresh Iranian ballistic missile and drone attack on Friday. Iran condemned the US tanker strikes as a ceasefire violation. Trump described prior US strikes as a "love tap" and maintained the ceasefire was still in effect.

WTI crude futures rose 0.64% on Friday to 5.42 per barrel. Oil has risen more than 50% since the US-Israeli war on Iran began February 28. Iran has kept the Strait largely closed; tanker transit is down roughly 70% from pre-war levels, affecting about 20 to 25 percent of global seaborne oil trade.

Why Friday Ended at Records Despite This

The S&P 500 closed at 7,398.93 (plus 0.84%, a new record) and the Nasdaq hit 26,247.08 (plus 1.71%, also a record). The primary driver was a far-stronger-than-expected April payrolls report: 115,000 jobs added versus a consensus estimate of around 62,000. Unemployment held at 4.3%.

Tech and AI-exposed names dominated. Micron Technology surged roughly 15% and Sandisk rose about 16% on the session, fueled by strong AI infrastructure spending signals from big-tech earnings. Both the S&P 500 and Nasdaq posted their sixth straight weekly gain, the longest streak since 2024.

The market is effectively pricing in a negotiated resolution and continued AI-driven growth, while partially discounting the Strait disruption as a recoverable supply shock rather than a permanent structural break. Bonds have been less sanguine, wobbling on inflation risk from elevated energy costs.

Implications for Traders

Equity traders: Index exposure over the weekend is a binary bet on the Iran response. Long positions sit at record highs with no protection if Iran rejects the proposal or goes quiet. Defined-risk structures (puts, spreads) are cheaper relative to realized vol than they have been at prior war-scare peaks.

Futures traders: S&P and Nasdaq futures (ES, NQ) will re-price Sunday evening at the 6:00 PM ET globex open before any formal US market session. That is the first tradable window. WTI crude futures on Sunday evening will be the primary barometer of whether the weekend produced progress or regression on the peace deal.

Energy traders: Natural gas is elevated due to LNG routing disruptions. A deal that reopens the Strait would likely unwind both oil and gas premiums sharply. Short-dated options on energy ETFs may be worth monitoring going into Sunday.

Potential Positives vs Negatives

Positives from a deal or positive response:

  • Sharp relief rally across equities; Nasdaq and S&P 500 gap higher at Monday open.
  • WTI crude drops 5 to 10% toward the 5 to 0 range on Strait reopening hopes.
  • Airline stocks, transports, and consumer discretionary recover sharply.
  • Disinflation impulse reduces pressure on the Fed to keep rates elevated.
  • US Treasury financial pressure campaign (new sanctions on 10 Iranian supply-chain entities announced Friday) may be working.

Negatives from a rejection or no response:

  • Equities gap lower at Monday open; S&P 500 could fall 1.5 to 3.0% depending on severity of Iran statement.
  • WTI spikes back toward 00 or higher; airlines and shipping stocks hit hardest.
  • VIX rises; safe havens (gold, yen, Treasuries) attract flows.
  • Fed in a harder spot: strong jobs data plus re-accelerating oil prices squeeze the rate-cut timeline further.
  • The UAE attack suggests regional spillover risk has not subsided.

What Could Happen From Here

Base case (45%): Iran delivers a measured response over the weekend that neither accepts nor rejects the US framework outright. It buys time, opening a formal negotiation track while maintaining public face at home. Markets interpret this as managed de-escalation. S&P 500 opens Monday near flat to up 0.5%. WTI steady near 4 to 6. No breakout move in either direction.

Confirming signals: Rubio or Trump posting cautiously optimistic language Saturday or Sunday. Iranian foreign ministry statement using language like "reviewing" or "constructive." Invalidating signals: Sharp Iranian rejection language or new military strikes over the weekend.

Upside case (25%): Iran accepts interim ceasefire terms explicitly. A joint statement or Rubio press conference announces a 30-day halt to hostilities and a Strait reopening process. S&P 500 gaps up 1.5 to 2.5% Monday; WTI drops to 5 or below; Nasdaq leads to fresh records.

Confirming signals: Coordinated statements from US, Iran, and Pakistani/Qatari mediators. Oil futures declining sharply in Sunday globex. Invalidating signals: Iranian hard-liners publicly rejecting the deal, internal political opposition in Tehran.

Downside case (30%): Iran rejects the proposal or stays silent past a reasonable deadline. New military exchanges occur over the weekend. Markets re-rate geopolitical risk. S&P 500 opens down 2 to 3%; WTI spikes toward 00; VIX climbs. The six-week winning streak for equities is at risk of breaking.

Confirming signals: Iranian FM press conference rejecting US terms, new Centcom strike announcements, or Trump posting hardline language on Truth Social. Invalidating signals: Any renewed dialogue signal from either side.

What to Watch Next (48 Hours)

  • Iran response: The single most important catalyst of the weekend. Watch Iranian foreign ministry X/social media posts, Trump Truth Social, and Rubio statements from Rome or Washington.
  • WTI crude futures Sunday 6:00 PM ET: The first real-time read on how energy markets are pricing the weekend outcome.
  • S&P 500 futures Sunday 6:00 PM ET: ES globex open provides the earliest tradable equity signal before Monday's regular session.
  • New military activity: Any fresh strikes, naval exchanges, or attacks in the UAE or broader Gulf region would escalate the downside scenario.
  • US Treasury and sanctions language: Friday's sanctions on Chinese and Hong Kong-based entities supplying Iran suggest financial pressure may intensify next week.
  • Upcoming macro events: The CLARITY Act markup (May 14) and Kevin Warsh becoming Fed chair (May 15) add additional macro layers to next week. See our ChartDojo market news hub for ongoing coverage.

Sources

The weekend gap is a pressure test for every open position. At ChartDojo, our AI-powered feedback helps you build real skills, not bad habits, so you are ready when moments like this create real opportunity. Start your free trial today.

FAQ

What is the peace proposal Iran has not responded to?
The United States has proposed an interim deal that would involve Iran halting hostilities, allowing the Strait of Hormuz to reopen to commercial traffic, and beginning negotiations on rolling back Iran's nuclear program in exchange for a broader ceasefire. Pakistan and Qatar have been serving as intermediaries. Iran previously issued its own five-point counterproposal including demands for reparations and US recognition of Iranian sovereignty over the Strait.

How much oil moves through the Strait of Hormuz?
Before the war began in late February 2026, roughly 20 to 25 percent of the world's seaborne oil trade and about 20 percent of global LNG passed through the Strait. With tanker traffic down roughly 70 percent, the disruption has pushed WTI crude above 5 per barrel, more than 50 percent higher than pre-war levels.

Header image source: pexels by Pixabay. License: PEXELS.