Australian Shares Plummet Amid Global Market Volatility, Trump-Iran Tensions
Australian Shares Plummet as Geopolitical Uncertainty Escalates
May 11 - The Australian share market experienced a significant downturn on Monday, with the S&P/ASX 200 index falling 1% to 8,661.4 points by 0031 GMT. This decline follows a 1.5% drop in the benchmark on Friday.
Escalating geopolitical uncertainty has led to a decrease in investor appetite, with the Middle East tensions reviving demand for safe-haven assets and weighing on equities. The situation was exacerbated by U.S. President Donald Trump's rejection of Iran's response to a U.S. proposal for peace talks on Sunday. This development has dashed hopes for an imminent end to the 10-week-old conflict, which has caused widespread damage in Iran and Lebanon, paralyzed maritime traffic in the Strait of Hormuz, and driven up global energy prices.
CSL Hits Near-Decade Low After Downgrading Outlook
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Australian biotech firm CSL experienced its worst trading day, plummeting more than 20% as it trimmed its fiscal 2026 earnings outlook and flagged $5 billion in non-cash impairments over the next two years. This move has pushed the stock to its lowest level since mid-December 2016. CSL emerged as the top laggard in the benchmark and weighed heavily on the health sub-index, which lost more than 9% on Monday.
Financials shed 1.7%, with the "Big Four" banks losing between 0.6% and 2.6%. Technology stocks also declined, shedding 1.3% and on track for their worst intraday fall since April 28, if current momentum persists.
Energy Stocks Gain Amid Rising Oil Prices
In contrast, energy stocks gained nearly 1%, snapping a three-session losing streak. Oil prices jumped on concerns that the failed peace proposal could keep global supplies tight for longer. Sub-index heavyweights Woodside added 0.9% while Santos advanced 0.6%. The mining sub-index also added 0.8% with top players Rio Tinto and BHP gaining 1.1% and 1.2%, respectively.
Read also: US-Iran Tensions Spark Uptick in Oil Prices Amid Global Market Decline
New Zealand Market Also Experiences Decline
Meanwhile, in New Zealand, the benchmark S&P/NZX 50 index was down 0.7%, or 93.1 points, at 13,082.1 points.
| Category | Friday's Performance | Monday's Performance |
|---|---|---|
| S&P/ASX 200 | 1.5% lower | 1% lower |
| CSL | - | -20% |
| Financials | - | 1.7% lower |
| Technology | - | 1.3% lower |
| Energy | - | 1% gain |
| Mining | - | 0.8% gain |
| S&P/NZX 50 | - | 0.7% lower |
Investor Takeaway
Investors should be cautious of market volatility and potential geopolitical risks.
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