Global Markets Swing as Tech Stocks Plunge
Wall Street lost $3.2 trillion as the Nasdaq dropped more than 5.5% on fears of an AI slowdown after US elections.
Updated on Nov. 6, 2026 in Stock Markets
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Global stock markets swung sharply after Tuesday's Democratic gains in the United States. The Nasdaq closed down over 5.5%, its biggest one-day drop since 2020, while the S&P 500 fell 4.4% and the Dow lost 3.4%.
Why it matters
Investors sold tech stocks after fearing newly elected politicians would slow data centre development and curtail the AI boom. The sell-off spread across Asia, with South Korea down 8.8% and Tokyo down nearly 6% in morning trade.
Closing data shows the Nasdaq down over 5.5%, the S&P 500 down 4.4%, and the Dow down 3.4%, while the JSE Top 40 closed up 4% and the JSE All Share rose 3.7%. Nasdaq futures were up just under 1% later in the day, leaving the market's direction unresolved.
The players
Nasdaq
The Nasdaq is a US stock exchange heavily weighted toward technology companies, making it the index most exposed to the AI sell-off.
National Treasury
National Treasury is the South African government department responsible for the country's budget, fiscal policy and public debt management.
The details
Tokyo was down nearly 6% in morning trade and South Korea fell 8.8%, following the US sell-off. In South Africa, the JSE Top 40 rose over 5% at one stage, with rebounding gold prices and a weaker dollar pushing mining shares well up, while the FTSE was down 0.4%.
Timeline
Tuesday (3 November 2026): Democrats posted massive gains in US elections.
Wednesday (4 November 2026): Markets rose before tech stocks plunged a day later.
Thursday (5 November 2026): Tech stocks plunged over AI slowdown fears.
Market Dynamics
The Nasdaq's 5.5% drop is its steepest single-day fall since 2020, when pandemic-era volatility last hit technology shares this hard. The sell-off reflects investor concern that the AI-driven rally in technology stocks could slow under new political leadership.
Investors holding US tech-heavy index funds or South African mining shares saw sharp, opposite moves on the same days. Retirement and brokerage accounts exposed to the Nasdaq may show notable losses until markets settle.
The takeaway
Single-day moves of this size often reflect sentiment rather than a lasting change in fundamentals, so investors should weigh them against longer-term holdings. Diversification across regions and sectors can soften the effect of a sudden tech sell-off.
Further reading
For more on how these moves are tracked, see the Stock Markets section.
Source note: This article includes information reported by Algoa FM.
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