Markets Rebound After a Sharp AI Sell-Off

Markets Rebound After a Sharp AI Sell-Off

Rob Wilson, CFA, Director of Investment Strategy

It has been a volatile few days for global markets. A sharp sell-off in AI and technology stocks sent the S&P 500 down 4.4% in a single session and pushed the Nasdaq into correction territory, before US shares rebounded strongly on Monday. Australian shares also recovered, with the ASX 200 reaching an 11-week high. The swings reflected growing concerns about AI spending, potential US regulation and the impact of high borrowing costs. Closer to home, consumer confidence fell to a four-year low. Here is what happened, and what it means for investors.

Key Takeaways

  • AI stocks suffer a sharp sell-off. Concerns about regulation, elevated valuations and the huge sums being invested in AI triggered a broad decline in US technology shares.

  • Markets bounce back. US shares rebounded strongly on Monday, while the ASX 200 reached an 11-week high, highlighting how quickly sentiment can shift.

  • Diversification matters. Australian shares have been relatively insulated from the AI sell-off.

  • Australian consumers remain under pressure. Consumer confidence fell to a four-year low as higher interest rates and persistent inflation continue to weigh on households.

AI Stocks Fall Sharply, Then Rebound

Global technology stocks have had a turbulent few days. On Thursday, the S&P 500 fell 4.4%, its worst day since April 2025, while the Nasdaq dropped 5.5%, leaving it in correction territory.

The sell-off reflected two growing concerns: that Democratic gains in the US midterm elections could lead to tighter regulation of AI and data-centre development, and that the enormous sums being invested in AI may take longer than expected to deliver returns, particularly while borrowing costs remain high.

Markets quickly regained some ground. On Monday, US shares posted their strongest gains in months, while Australian shares also rose, supported by easing oil prices. One notable exception was Nvidia, whose shares continued to fall amid an investigation involving its chief executive, Jensen Huang.

What It Means for Investors

AI and technology stocks have driven much of the global share-market rally over the past few years, so sharp swings in these companies can have an outsized impact on diversified portfolios.

Australia has been relatively insulated. With a much smaller technology sector, the local market has experienced less of the volatility, and the ASX 200 reached an 11-week high on Tuesday. However, Australian investors remain exposed to the AI trade through their international shareholdings and, indirectly, through resources companies supplying materials used in data-centre construction.

The rebound is encouraging, but it does not resolve the underlying questions about AI valuations and spending. Investors appear increasingly focused on whether companies can demonstrate tangible returns from their AI investments, rather than simply announcing larger spending commitments.

It is also a reminder of the importance of diversification. Exposure across different sectors and markets can help reduce reliance on any single investment theme, particularly when market sentiment changes quickly.

At Home, Consumer Confidence Stays Weak

Away from the global market volatility, the main local economic news was another fall in consumer confidence. The Westpac–Melbourne Institute Consumer Sentiment Index dropped 2.7% to 78.2 in November, its third consecutive monthly decline and its lowest reading in four years.

The weakness follows the Reserve Bank's decision to lift the cash rate to 4.85%, its highest level in 18 years. Mortgage holders have been particularly affected, with confidence among this group falling to its lowest level on record. The figures highlight the pressure facing Australian households. Higher mortgage repayments and persistent cost-of-living pressures are weighing on spending intentions and expectations for the economy.

For the RBA, the challenge remains balancing the need to bring inflation back towards its target against signs that higher interest rates are increasingly affecting household confidence and economic activity.


Looking Ahead

Having rebounded, markets may well stay volatile in the near term, and chip-maker Nvidia’s earnings later this month loom as a key test of confidence in the AI trade. Closer to home, attention turns back to the data that will shape the RBA’s final meeting of the year: the October inflation figures and the latest jobs report. How the new US Congress approaches AI and data centres will also be worth watching for its longer-term market implications.

Key Dates to Watch

  • Australian jobs  — 19 November: A read on whether higher rates are cooling the labour market, ahead of the RBA.

  • Nvidia earnings — later this month: The bellwether for the AI trade, closely watched after the sell-off.

  • Australian inflation  — 25 November: A key input for whether the RBA can pause at its December meeting.

  • RBA decision — 8 December: The Bank’s final scheduled rate call of 2026.

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