How Do Oil Prices Affect the Stock Market?

Oil is the lifeblood of the global economy. It fuels transport, heats homes, powers factories and feeds into the cost of virtually everything you buy. So when the price of a barrel of crude swings sharply in either direction, the effects ripple far beyond the petrol station.

Right now, those ripples are impossible to ignore. Since the United States and Israel launched joint strikes on Iran on 28 February 2026, Brent crude has swung from around US$70 per barrel to nearly US$120 before settling around US$90. The Strait of Hormuz, through which roughly one fifth of the world’s oil supply travels, has been effectively closed to shipping. Oil-producing nations like Kuwait, the UAE and Iraq have had to cut output as storage fills up with barrels that have nowhere to go.

The International Energy Agency (IEA) has responded by coordinating the largest release of emergency oil reserves in history, with member countries agreeing to release 400 million barrels to stabilise supply. Meanwhile, the IMF has warned that a sustained 10% increase in energy prices could add 0.4 percentage points to global inflation and slow economic growth by 0.1% to 0.2%.

For investors, the question is not just “what’s the price of oil today?” It’s “how does that price affect my portfolio, the companies I’m invested in and the broader market?”

Let’s break it down.

How oil prices move the stock market

1. Inflation and interest rates

Oil is a core input cost across almost every industry. When crude prices rise, businesses face higher costs for energy, transport and raw materials. Those costs get passed on to consumers, pushing up the price of everything from groceries to airline tickets.

Higher inflation puts pressure on central banks to keep interest rates elevated for longer. That matters for equities because higher rates increase the “discount rate” used to value future corporate earnings, which tends to weigh on share prices, particularly for growth stocks.

We’re seeing this play out in real time. With oil prices surging since late February 2026, analysts now expect the US Federal Reserve to delay further rate cuts, keeping borrowing costs higher across the economy.

2. Corporate profit margins

Not all companies are affected equally. For energy-intensive businesses (airlines, logistics firms, manufacturers and agriculture), a spike in oil prices directly squeezes profit margins. If they can’t pass those costs on to customers, earnings take a hit.

On the flip side, oil and gas producers see their revenues climb as the commodity they sell becomes more valuable. The same barrel of oil that cost US$70 a few weeks ago now sells for US$90 or more.

3. Consumer spending

When fuel prices rise, households have less money to spend on everything else. In the US, retail petrol prices have jumped by more than 50 cents per gallon since the Iran conflict began. In Australia, drivers are already feeling the pinch at the bowser.

This diversion of spending away from discretionary goods (dining out, entertainment, retail) and towards essentials (fuel, energy bills) tends to hurt consumer-facing businesses and drag on broader economic growth.

4. Investor sentiment and volatility

Oil price shocks trigger fear and uncertainty, two things markets hate. Since the Iran war began, we’ve seen dramatic swings across global indices. Japan’s Nikkei 225 recorded its worst single-day fall since April 2025. South Korea’s Kospi dropped 6% and was halted for 20 minutes due to heavy selling. Even in the US, the S&P 500, Dow and Nasdaq have all experienced significant intraday swings driven by conflicting reports about the Strait of Hormuz.

When volatility spikes, investors tend to rotate out of riskier assets and into perceived safe havens like bonds, gold or cash, putting further downward pressure on equities.

A brief history of oil shocks and market reactions

The relationship between oil prices and stock markets is well documented across decades of economic history.

1973 (Yom Kippur War): Arab oil producers imposed an embargo on nations supporting Israel. Oil prices quadrupled. The US stock market fell roughly 45% over the following two years, and a deep recession followed.

1990 (Gulf War): Iraq’s invasion of Kuwait sent oil prices from around US$17 to US$36 per barrel in a matter of months. The S&P 500 fell approximately 20% before recovering as the conflict resolved.

2008 (Pre-GFC spike): Oil surged to US$147 per barrel amid booming global demand and speculation. The price spike is widely considered to have contributed to the economic conditions that preceded the global financial crisis.

2014–2016 (Oil price collapse): Brent crude fell from over US$100 to below US$30 as supply flooded the market. Interestingly, the IMF found that the widely anticipated “shot in the arm” for the global economy from lower oil prices never materialised. Energy sector investment collapsed, oil-exporting economies plunged into crisis, and the benefits for consumers were smaller than expected.

2022 (Russia–Ukraine conflict): Oil briefly spiked above US$130 per barrel following Russia’s invasion of Ukraine. Global markets sold off, inflation surged and central banks around the world embarked on aggressive rate-hiking cycles.

The lesson? Sudden, sharp moves in oil prices, whether up or down, tend to create economic disruption and market volatility. It’s the speed and magnitude of the change, not just the direction, that matters most.

The Iran war: a real-time case study

The current conflict offers a textbook example of how geopolitical events transmit through oil markets and into equity portfolios.

Here’s a brief timeline of what’s happened since late February 2026:

28 February: The US and Israel launch joint strikes on Iran. Brent crude spikes 6.2% to around US$77 per barrel. S&P 500 futures fall more than 1%. Energy stocks rally while broader markets sell off.

Early March: Iran effectively closes the Strait of Hormuz to tanker traffic. Shipping through the strait drops 95% in the first week of March. Oil-producing Gulf states begin cutting output as storage fills up.

8–9 March: Israel strikes Iranian oil depots. Brent crude briefly surpasses US$100 per barrel, then spikes towards US$120 on 10 March before Trump signals the war may be nearing completion. Markets stage a dramatic reversal, with the S&P 500 clawing back a 1.5% loss to finish higher by 0.83%.

11 March: Brent settles around US$92 per barrel. The IEA announces its largest ever coordinated release of strategic reserves (400 million barrels). G7 leaders convene to discuss energy supply coordination. Asia’s markets remain under pressure, with South Korea’s equities market experiencing its highest volatility on record.

The pattern is clear: oil supply disruptions lead to price spikes, which trigger inflation fears, which weigh on equities (except energy), which drive volatility and risk-off sentiment across global markets.

Sector winners and losers when oil prices spike

The impact of rising oil prices is not uniform across the share market. Some sectors benefit directly, while others bear the brunt.

Winners

📈 Energy producers: Companies like Exxon Mobil (NYSE: XOM), Chevron (NYSE: CVX), Occidental Petroleum (NYSE: OXY) and Diamondback Energy (NASDAQ: FANG) have all rallied since the conflict began. Higher crude prices directly boost their revenues and profit margins. On the ASX, energy names like Woodside (ASX: WDS), Santos (ASX: STO) and Beach Energy (ASX: BPT) tend to follow a similar pattern when global oil prices rise.

📈 Defence and aerospace: Geopolitical conflict tends to drive increased government defence spending. Stocks like Northrop Grumman (NYSE: NOC) and Lockheed Martin (NYSE: LMT) surged in early March 2026.

Losers

📉 Airlines: Jet fuel is one of the largest costs for any airline. United Airlines (NASDAQ: UAL), American Airlines (NASDAQ: AAL) and Alaska Air (NYSE: ALK) all fell more than 4% in a single session following the initial oil spike. Australian carriers like Qantas (ASX: QAN) are not immune either.

📉 Consumer staples and discretionary: When consumers redirect spending to fuel and energy, companies selling packaged food, snacks and non-essential goods feel the squeeze. In the US, Campbell’s (NASDAQ: CPB), Conagra (NYSE: CAG) and General Mills (NYSE: GIS) all dropped between 4% and 7% as the market priced in weaker consumer spending.

📉 Transport and logistics: Higher fuel costs hit trucking, shipping and delivery companies hard. In the US, companies like FedEx (NYSE: FDX) and UPS (NYSE: UPS) see margins compress as diesel prices climb. On the ASX, logistics operators like Brambles (ASX: BXB) and Qube Holdings (ASX: QUB) are sensitive to fuel cost movements. Any business with a large fleet faces immediate margin pressure.

Companies affected by oil prices and how investors can position

If you’re wondering which specific companies are most exposed to oil price movements, here are some of the key names to know on both sides of the Pacific.

On the ASX

Woodside Energy (ASX: WDS) is Australia’s largest independent oil and gas producer, operating major LNG projects including Pluto and North West Shelf in Western Australia, as well as the Sangomar oil project offshore Senegal. Higher oil and LNG prices flow directly into Woodside’s earnings. The company recorded record production in 2025 and currently offers a dividend yield above 5%. Woodside shares surged nearly 7% in a single session when the Iran conflict began and are up roughly 30% for the year.

Santos (ASX: STO) is Australia’s second largest oil and gas producer. What makes Santos particularly interesting right now is its timing: the company shipped its first LNG cargo from the long-awaited Barossa gas project in January 2026, and production is expected to rise roughly 30% by 2027 as Barossa and its Pikka project in Alaska ramp up. Rising output plus rising oil prices is a powerful combination for earnings.

Karoon Energy (ASX: KAR) is a smaller, pure-play oil producer focused on offshore Brazil. With a market cap of around A$1.25 billion and a P/E of roughly 7, Karoon is far more sensitive to oil price swings than its larger peers. It surged more than 15% in a single day when the conflict began, but would likely give back gains just as quickly if prices retreat.

On the losing side, ASX-listed airlines like Qantas (ASX: QAN) face immediate margin pressure when jet fuel costs rise. Consumer-facing retailers and logistics companies with large fleet operations are also vulnerable.

In the US

The likely beneficiaries of rising oil prices are the major integrated energy companies. Exxon Mobil (NYSE: XOM) and Chevron (NYSE: CVX) are the two largest, with diversified operations spanning exploration, production, refining and chemicals. Their size and diversification provide some cushion in both rising and falling price environments. Among pure-play producers, Occidental Petroleum (NYSE: OXY), Devon Energy (NYSE: DVN) and Diamondback Energy (NASDAQ: FANG) all gained more than 2% the day the Iran conflict began. These companies’ revenues are almost entirely driven by the oil price, which means they move faster in both directions.

On the other side, US airlines like United Airlines (NASDAQ: UAL) and American Airlines (NASDAQ: AAL) are among the most oil-sensitive stocks in the market. Jet fuel is one of their largest costs, and they fell more than 4% in a single session following the initial spike. Consumer-facing companies like packaged food giants also tend to suffer as higher energy costs squeeze household budgets.

How investors may consider positioning for oil price movements

There are several ways investors can position their portfolios around oil price movements, depending on their risk appetite and time horizon.

Direct energy exposure: Buying shares in oil and gas producers gives you direct exposure to rising crude prices. Larger, diversified companies like Exxon, Chevron or Woodside tend to be more resilient across the cycle, while smaller pure-play producers like Karoon offer more upside (and more downside) when prices swing.

Energy ETFs: For investors who want energy exposure without picking individual stocks, exchange-traded funds (ETFs) that track baskets of energy companies can provide diversified access to the sector. In the US, the Energy Select Sector SPDR Fund (XLE) tracks major US oil and gas companies. On the ASX, the S&P/ASX 200 Energy Index (XEJ) covers Australia’s largest energy producers.

Sector rotation: Some investors use oil price trends as a signal to rotate between sectors. When oil is rising, they may increase exposure to energy while reducing holdings in oil-sensitive losers like airlines and consumer discretionary. When oil falls, the rotation reverses. This approach requires active management and a willingness to trade more frequently.

Stay diversified: Perhaps the simplest approach is to ensure your portfolio has some energy exposure as a natural hedge. Holding a mix of sectors may help to diversify a portfolio; for example, energy holdings could potentially offset losses in sectors like airlines or consumer stocks during oil price spikes. The key is not to over-concentrate in any single sector.

One thing worth keeping in mind: war-driven oil rallies tend to unwind just as quickly as they form, because they are built on uncertainty rather than lasting supply destruction. Timing matters, and chasing a spike after it has already happened can be risky.

Oil importers vs. oil exporters

The impact of higher oil prices depends heavily on whether a country is a net importer or exporter of energy.

Oil-importing nations (most of Asia, much of Europe) tend to suffer the most from price spikes. Higher energy import bills widen trade deficits, push up domestic inflation and slow growth. The IMF’s Managing Director Kristalina Georgieva noted that Asia is “particularly vulnerable” to the current energy shock because China, Japan, South Korea and India all rely heavily on Middle Eastern crude transported via the Strait of Hormuz.

Oil-exporting nations (Saudi Arabia, the UAE, parts of the US economy) benefit from higher revenues when prices rise. However, in the current situation, several Gulf producers have had to cut output because the closure of the Strait of Hormuz has left them with barrels they cannot ship. As one analyst put it, their oil could essentially become “stranded assets in an extended war scenario.”

The United States sits in a unique position. As a net oil exporter since 2020, the US economy can actually benefit in relative terms from rising crude prices compared to oil-importing nations in Asia and Europe. Energy sector revenues climb, and the broader S&P 500, which is heavily weighted towards growth stocks, may attract capital as investors favour markets less exposed to the energy shock.

Australia’s position: As a major LNG exporter but a net crude oil importer, Australia experiences a mixed impact. Energy companies on the ASX benefit, and the Australian dollar tends to strengthen with commodity prices. But consumers still face higher fuel and energy costs at the bowser, which can dampen domestic spending and weigh on consumer-facing sectors. For investors, this means ASX energy stocks can act as a partial hedge against the broader drag that rising oil prices place on the rest of the market.

Frequently asked questions

What is the sweet spot for oil prices?

Economists don’t agree on a single number, but many point to a range of roughly US$60 to US$80 per barrel as a “Goldilocks zone” that balances competing interests.

At this level, oil prices are high enough to sustain investment in exploration and production, keep energy-exporting economies financially stable, and support jobs in the energy sector. But they’re low enough to keep inflation in check, allow consumers to maintain spending power and avoid triggering the kind of economic slowdown that typically follows a price shock.

When prices fall too low (below US$50), energy companies slash capital expenditure, workers in producing regions lose jobs and oil-exporting nations face fiscal crises. The IMF observed after the 2014–2016 collapse that the expected economic boost from cheap oil simply did not arrive.

When prices climb too high (above US$100 for a sustained period), the opposite happens: inflation accelerates, central banks tighten policy, consumer spending contracts and the risk of recession rises. History shows that most major oil price spikes have been followed by economic slowdowns within two to three quarters.

Why do oil price shocks cause recessions?

An oil price shock acts as a negative supply shock to the economy. It simultaneously raises the cost of producing goods (pushing prices up) and reduces households’ real purchasing power (dragging demand down). Central banks are then stuck between fighting inflation and supporting growth, often leading to policy tightening that further slows the economy. When combined with deteriorating business and consumer confidence, this creates the conditions for a recession.

How do oil prices affect petrol prices in Australia?

Australian petrol prices are closely linked to the international price of refined fuel, which in turn tracks crude oil. When Brent crude rises, the wholesale cost of petrol follows, and that feeds through to retail prices at the bowser, typically with a lag of one to two weeks. The exchange rate also plays a role: because oil is priced in US dollars, a weaker Australian dollar amplifies the impact of rising crude on local fuel costs.

Does OPEC control oil prices?

OPEC and its broader alliance OPEC+ (which includes Russia) can influence oil prices by adjusting production quotas. When OPEC cuts output, it reduces global supply and tends to push prices higher. When it increases production, the opposite occurs. However, OPEC does not have total control. Factors like geopolitical conflict, US shale production, demand from China and India, strategic reserve releases and broader economic conditions all play significant roles in determining the price of a barrel of crude.

How can investors protect their portfolio from oil price volatility?

Diversification is key. Investors who hold a mix of sectors, including some energy exposure, are better positioned to weather oil price swings than those concentrated in energy-sensitive sectors like airlines or consumer discretionary. Some investors also look to exchange-traded funds (ETFs) that track energy commodities or diversified energy companies as a way to gain exposure without picking individual stocks.

The bottom line

Oil prices are one of the most powerful forces in global financial markets. They affect inflation, interest rates, corporate earnings, consumer spending and investor sentiment, all of which flow directly into share prices.

The current conflict in Iran has provided a stark reminder of how quickly geopolitical events can upend energy markets and ripple through portfolios. Whether you’re invested in energy stocks, airlines, consumer goods or broad index funds, understanding the mechanics of how oil prices move markets puts you in a better position to make informed decisions.

As with any investment topic, the key takeaway is that context matters. A US$90 barrel of oil driven by a temporary supply disruption tells a very different story to a US$90 barrel driven by surging global demand. Knowing the difference helps you read the market, not just react to it.

Sources

Al Jazeera, “Oil prices swing wildly amid mixed messages over Iran war,” 11 March 2026. aljazeera.com

NBC News, “Oil prices soar past $100 per barrel; Iran celebrates new supreme leader,” 10 March 2026. nbcnews.com

CNN, “Oil surges and stock futures sink as war in Iran threatens crude supply,” 1 March 2026. cnn.com

NPR, “Oil prices surge, but no panic yet, as Iran war continues,” 2 March 2026. npr.org

CNBC, “Crude prices close higher as market weighs threats to tankers against IEA oil stockpile release,” 11 March 2026. cnbc.com

NBC News, “Oil prices volatile on conflicting reports about Strait of Hormuz,” 10 March 2026. nbcnews.com

OilPrice.com, “IMF: Oil Price Shock Tests Global Economic Resilience,” 6 March 2026. oilprice.com

Bloomberg, “IMF Says 10% Oil Rise for Year Adds 40 Basis Points to Inflation,” 6 March 2026. bloomberg.com

IMF Blog, “Oil Prices and the Global Economy: It’s Complicated,” March 2016. imf.org

Yahoo Finance, “Stock market today: Dow, S&P 500 slip for second day, oil jumps as Iran war rages on,” 12 March 2026. finance.yahoo.com

NBC News, “Oil prices fall and stocks rise in dramatic reversal,” 10 March 2026. nbcnews.com

Fortune, “Current price of oil as of March 11, 2026,” 11 March 2026. fortune.com

Market Index, “Oil price calamity! ASX 200 plunges, but energy stocks are rising,” 9 March 2026. marketindex.com.au

As always, it is essential to conduct your own research and due diligence before making any investment decisions. Superhero does not provide financial advice that considers your personal objectives, financial situation or particular needs. All investments carry risk so please consider carefully before investing. Remember that past performance is not indicative of future performance.