What Happened?
A number of stocks fell in the afternoon session after crude oil dropped to its lowest level since the start of the Iran war, as tankers resumed transit through the Strait of Hormuz and the U.S. and Iran signaled progress toward ending the conflict.
The S&P 500 energy index fell about 2.45%, the weakest major sector even as the broader market held roughly flat. Exxon Mobil (XOM) and Chevron (CVX) each fell in the ~2–2.5% range (exact figures vary by source). The more oil-price-sensitive explorers and producers were hit harder as Occidental (OXY), ConocoPhillips (COP), Devon (DVN) and APA Corp all fell roughly 2.5–3.5%. Oilfield-services names (Halliburton, SLB) and refiners (Valero, Phillips 66, Marathon Petroleum) slipped about 1.5–2.5%. WTI fell about 4% to near $70 and Brent about 4% to near $74,the lowest since February 27, the day before U.S.–Israeli strikes on Iran, leaving crude down roughly 40% from its wartime peak.
The driver was physical and visible: tankers openly crossing Hormuz with transponders on, the IMO citing safety guarantees, and the IEA estimating the UAE exporting near 85% of pre-war levels. Separately, Trump ordered a DOJ probe into why pump prices "haven't fallen faster," accusing oil companies of gouging.
The stock market overreacts to news, and big price drops can present good opportunities to buy high-quality stocks.
Among others, the following stocks were impacted:
- U.S. Shale E&P company Permian Resources (NYSE: PR) fell 2.8%. Is now the time to buy Permian Resources? Access our full analysis report here, it’s free.
- Mixed or Offshore Upstream E&P company Vitesse Energy (NYSE: VTS) fell 2.3%. Is now the time to buy Vitesse Energy? Access our full analysis report here, it’s free.
Zooming In On Permian Resources (PR)
Permian Resources’s shares are not very volatile and have only had 3 moves greater than 5% over the last year. In that context, today’s move indicates the market considers this news meaningful, although it might not be something that would fundamentally change its perception of the business.
The previous big move we wrote about was 9 days ago when the stock dropped 2.6% on the news that a peace agreement between the U.S. and Iran sent oil prices tumbling, dragging down the energy sector.
Rystad Energy estimated that US shale producers stood to generate an additional $63 billion in free cash flow in 2026 if WTI averaged $100 for the year. With WTI falling more than 5% to $80.61, that calculation shifted materially. Most producers remain profitable at current prices, but the marginal economics of new well drilling weaken meaningfully at lower levels, and the market prices direction as much as the current number. The structural concern extended beyond the session.
The peace deal opens a 60-day negotiation on lifting Iranian oil sanctions. If Iranian exports are eventually restored (they ran at roughly 3 million barrels per day before the conflict) the additional supply would represent a persistent overhang that US shale producers, who were the primary market-share beneficiaries of Iran's absence from global markets, would absorb most directly.
Permian Resources is up 29.2% since the beginning of the year, but at $18.61 per share, it is still trading 17.4% below its 52-week high of $22.52 from May 2026. Investors who bought $1,000 worth of Permian Resources’s shares 5 years ago would now be looking at an investment worth $2,580.
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