Oil Sinks 6%, Nasdaq Rallies On Iran Talks: Stock Market Today - Vanguard S&P 500 ETF (ARCA:VOO)
U.S. stocks rose at the open as President Trump called off a planned Iran strike and said negotiations would resume, easing crude oil and Treasury yields. WTI fell 5.9% to $79.69 and the 10-year yield dropped 5 bps to 4.69%. S&P 500 gained 1.3% to 7,584 and Nasdaq 100 rose 1.3%. Energy Select Sector SPDR (XLE) fell 0.8%.
How this was made

The 30-second read
Why it matters
Falling energy prices reduced inflation pressure, cooling rate-hike expectations; equities rallied broadly, but energy and certain single names sold off on company-specific news.
Market read
This is a US market wrap where the actionable element is the same-day oil-to-rates transmission and the named single-stock drawdowns.
What to watch
The article does not quantify how much of the rate move is attributable to macro data versus the Iran headline, and it omits the specific content of MAR’s and FICO’s “mixed print/insider selling”.
Background
The session’s macro driver is a Trump statement calling off a planned Iran strike and resuming negotiations, coinciding with a sharp crude selloff and lower Treasury yields.
Ticker impact
Marriott International (MAR) is named as the biggest decliner, down 7.4% on a mixed print.
Near-term downside risk until investors digest the mixed print; volatility likely elevated.
The article states the move and that it was on a mixed print, but provides no figures or guidance details to gauge magnitude.
Fair Isaac (FICO) fell 7.2%, extending last week’s roughly 17% post-earnings collapse tied to reported insider selling.
Bias remains fragile; further weakness possible if insider-selling narrative continues to dominate.
The article references insider selling and prior earnings, but does not add new insider transaction details or new earnings/guidance numbers.
Market effects
Lower crude and easing yields support a broad risk-on tone, while energy underperforms (XLE down).
Primarily US-focused equity reaction; no direct regional spillover described beyond US rates and oil.
Iran-talks-driven oil repricing can influence global energy pricing and rate expectations, but the article stays US-market centered.
Counterpoint
The rally may be fragile if oil’s geopolitical premium rebounds; energy weakness could reassert quickly.
Key entities
- commodityWest Texas Intermediate (WTI)
Down 5.9% to $79.69, cited as unwinding geopolitical premium.
- commodityBrent
Down 4.7% to $83.78.
- macroFederal Reserve
Futures imply ~63% probability of a 25 bp hike in September, down from ~80% before the prior meeting.
- macroISM Manufacturing PMI
Jumped to 55.6 in July from 53.3, with employment returning to expansion.
- equityMarriott International
Down 7.4% on a mixed print.



