US-Iran Military Pause Extended; Oil Futures Decline as Trump Signals Negotiation Willingness
Measured from 25 Jul 2026 (event start), not the 25 Jul 2026 announcement
Defense contractors moved +9.0%, the largest reaction measured, though not statistically significant, meaning it may reflect normal market noise rather than the event itself. This is a provisional result; the full measurement window is not yet complete.
LMT, RTX, NOC · up
What Happened
After nearly two weeks of tit-for-tat airstrikes between the US and Iran, President Trump ordered a halt to the air campaign and signaled openness to resumed diplomatic negotiations. The pause held through the weekend with reciprocal Iranian restraint. Trump stated there is 'a good chance that something could happen' in talks, though Iran disputes the existence of direct negotiations. Brent crude tumbled from near $100 to below $90/barrel in response. Global equity markets rallied on the first day of the ceasefire, with the Nasdaq up 1%, Philippine stocks rising 0.54%, and broader risk appetite improving.
Geopolitical de-escalation of this magnitude typically drives 300-500 basis point revaluation in energy equities and 100+ basis point rallies in duration-sensitive equity indices; sentiment shift from war-risk premium to risk-on positioning.
Pause began July 25 evening (US time); extended through July 26-27 weekend; markets reacted positively at open on July 28.
Trump declined to continue strikes on Friday July 25; pause extended through weekend of July 26-27; markets reacted Monday July 28 with oil falling below $90/barrel and equities rallying on de-escalation optimism.
Read how dates work →Partial reaction shown. Significance flags are marked provisional and may change as more price data accumulates.
How To Read This
Each sector below is a basket of named stocks. The percentage shown is the move beyond the overall market (S&P 500) , what event studies call the . A move only counts as when it sits clearly outside that basket's normal weekly swings.
How Much Sectors Moved
Path over time. Click a sector in the legend to toggle it. Dashed lines mark key moments.
Defense contractors moved most at +9.0% against the market, the direction you would expect from a sanctions relief. None of the moves cleared the significance threshold. Read the direction as flavour, not signal.
Volatility
Volatility measures how erratic prices became, a separate signal from the direction of the move.
- Oil tanker operators44% → 23%1.9x calmer after
- Oil & gas producers24% → 32%1.4x more volatile after
- Defense contractors33% → 20%1.6x calmer after
- Gold21% → 22%volatility roughly unchanged
- Airline stocks33% → 48%1.4x more volatile after
A ratio above 1.00 means the sector's daily-price swings widened after the event. Airline stocks became the most erratic at 1.45×, and 2 of 5 sectors traded meaningfully wider than they did before. Volatility is a separate signal from direction: a sector can end flat and still have traded wildly along the way.
Phases
| Sector | Peak Move | Peak Day | Reverted By |
|---|---|---|---|
| Oil tanker operators | +8.1% | Day 2 | Still elevated |
| Oil & gas producers | +5.8% | Day 2 | Still elevated |
| Defense contractors | +10.9% | Day 0 | Still elevated |
| Gold | +2.7% | Day 2 | Day 4 |
| Airline stocks | +5.9% | Day 1 | Still elevated |
The reaction peaked around day 1 on average. 1 of 5 sectors reverted inside the window, 4 were still elevated at the close. A reaction that reverts is a shock priced in; one that stays is a re-rating.
Historical Precedents
Companies Most Affected
Measured 10 days after the event. Reaction still developing; the full window is not yet complete.
This tool informs your decision. It does not give investment advice.