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Oil's 2% drop points to softer start for Australian shares

Oil's 2% drop points to softer start for Australian shares
Markets · 2026
Photo · Eleanor Whitfield for Daily Digest Invest
By Eleanor Whitfield Markets Editor-in-Chief Aug 13, 2026 4 min read

Australian shares are expected to open lower on Thursday after crude oil prices fell more than 2% overnight, dragged down by a larger-than-expected build in US inventories. The drop in oil comes even as US stocks managed to close higher, underscoring the mixed signals facing global markets.

What happened overnight

Oil prices slid sharply after the US Energy Information Administration reported a jump in crude stockpiles, a sign that supply is currently outpacing near-term demand. The move reversed some of the gains seen in recent sessions, when traders were focused on potential supply disruptions in the Middle East.

Despite the weakness in commodities, US equities finished in positive territory, helped by hopes that the Federal Reserve may soon pause its rate-hiking cycle. That optimism has been building after recent inflation data came in cooler than expected, as noted in our coverage of flat producer prices boosting Fed pause hopes.

Why oil matters for the market

Oil is more than just a commodity—it's a key input for everything from petrol prices to manufacturing costs. When crude falls, it can signal weaker global demand, which is often seen as a negative for economic growth. At the same time, lower energy costs can ease inflationary pressures, giving central banks more room to hold off on rate hikes.

For Australian investors, the oil price is particularly important because energy giants like Woodside and Santos are major components of the local share market. A drop in crude typically translates into lower revenue expectations for these companies, which can weigh on the overall index.

The latest decline was driven by the inventory build, but traders are still keeping an eye on Middle East tensions. As we've seen in Gulf markets reacting to Hormuz shipping risks, supply concerns can quickly resurface and push prices back up.

What it means for investors

For everyday investors, a softer open for Australian shares doesn't necessarily signal a long-term trend. It's a reminder that markets can be volatile in the short term, driven by daily news like inventory data or geopolitical headlines.

If you hold energy stocks, you might see some short-term weakness. But it's worth remembering that oil prices are influenced by many factors, and a single day's move doesn't change the bigger picture. Diversification remains a key strategy—having a mix of sectors can help cushion the impact of any one commodity's swings.

Looking ahead, investors will be watching for any further signs of slowing demand, as well as any new developments in the Middle East. The resilience of European stocks despite war fears shows that markets can look past geopolitical risks when other factors, like earnings and central bank policy, are supportive.

Broader market context

The mixed overnight session—higher stocks but lower oil—reflects a market that is trying to balance competing forces. On one hand, cooling inflation is raising hopes for a Fed pause, which tends to be good for equities. On the other hand, falling oil prices can be a warning sign about global growth.

In Asia, tech stocks have been rallying on similar inflation relief, as we noted in our piece on Asian tech stocks rallying on calmer rate fears. That positive sentiment could help limit the downside for Australian shares, even as energy weighs.

For now, the focus for Australian investors will be on how the local market opens and whether the energy sector's drag is offset by gains elsewhere. The coming days will also bring more earnings reports and economic data that could shift the narrative.

The bottom line

Oil's drop is a reminder that commodity prices can move quickly and have ripple effects across markets. While a softer open for Australian shares is likely, it's not necessarily a cause for alarm. Keep an eye on how the day unfolds, and remember that short-term moves are part of the normal rhythm of investing.

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