Microsoft, Alphabet, and Amazon Make Up About 15% of the S&P 500. All 3 Report Earnings Within 2 Days.

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Big Tech’s Earnings Could Shake the S&P 500—and What That Means for Rand Investors

Microsoft, Alphabet, and Amazon’s earnings reports are primed to move U.S. markets, with ripple effects on the rand and select JSE sectors.

Microsoft, Alphabet, and Amazon together make up about 15% of the S&P 500, yet they’ve lagged behind the index’s 12% gain this year. Investors should brace for volatility when these giants report earnings on October 28-29. Historically, their numbers have triggered outsized moves—sometimes down 10%, other times up 15%. While Apple and Nvidia have driven the S&P’s rally, these three underperformers could temper that momentum. For South African investors, the obvious transmission mechanism is the USD/ZAR. Strong U.S. tech earnings tend to bolster the dollar, pressuring the rand, which weighs on rand-hedge stocks like Naspers and Prosus. Conversely, a miss could weaken the dollar and lift the rand, providing relief to sectors sensitive to import inflation, such as retail and consumer discretionary. Still, local sentiment also depends on domestic factors and commodity prices, so don’t expect a perfect correlation. If Microsoft or Amazon disappoint, be ready to trim high-beta rand-hedges; if results surprise positively, buying opportunities in these counters could emerge. this is just our opinion and not financial advice