Santos Shares Plummet as Crude Oil Prices Drop Amid Eased Geopolitical Tensions

Santos Ltd (ASX:STO) saw its shares decline by 3.26% to AUD 7.71 on July 27, 2026, as the energy sector took a hit from the sharp drop in crude oil prices.

The S&P/ASX 200 Energy Index fell 3.08%, making it the biggest drag on the broader market during the session.

Brent crude oil dropped by 5.50% to USD 91.94 after geopolitical tensions in the Middle East eased following a US-Iran agreement to pause military strikes, removing the risk premium that had pushed crude prices to multi-month highs.

Despite this decline in energy stocks, the broader S&P/ASX 200 rose by 1.32% to 8,887.70 points and the All Ordinaries gained 1.29% to 9,057.00 points, showing that the session's weakness was concentrated in the energy sector rather than across the market.

As a major oil and gas producer, Santos' revenue is closely tied to international oil prices, making it one of the most direct beneficiaries of elevated prices and casualties of a significant correction.