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plainmoney — Market brief — Monday 20 Jul 2026 — 06:45 AEST

The straight answer

Wall Street closed lower, with the S&P 500 down 1.0%, as a sell-off in AI-related stocks deepened. This sets the ASX 200 up for a softer open today, likely down around 0.5%, and puts the Aussie dollar under pressure, currently at 0.6970.

What's moving markets

US equities saw a broad sell-off, with the S&P 500 falling 1.0% to 7,457.7 and the tech-heavy Nasdaq down 1.4% to 25,520.2. This was driven by a continued slump in AI chip stocks, which also pushed the VIX volatility index up 12.2% to 18.8. Higher volatility usually means investors are more nervous.

Oil prices jumped, with Brent crude up 4.6% to US$88.1 and WTI crude up 3.6% to US$81.8. Gold also rose 0.8% to US$4,018.8, often seen as a safe haven during market uncertainty. Bitcoin was largely flat, down 0.1% to US$64,450.

For Australia: The ASX 200 is expected to open softer, following the US lead. The Materials sector, which includes our big miners, was already down 3.2% on Friday, with BHP falling 2.7% to 57.5 and Rio Tinto down 2.4% to 160.9. Iron ore was flat at US$98.9, offering little support. The AUD/USD slipped 0.4% to 0.6970, reflecting the broader risk-off mood.

World & geopolitics

The global markets are reacting to a deepening sell-off in AI chip stocks, per MSN and AP News. This follows a period where Korea's AI-heavy market was setting the tone for global stocks, as reported by Fortune. This suggests a shift in sentiment around the AI capex cycle, which has been a major driver of global tech valuations.

Fortune also reports that the world is looking ahead to a post-Iran oil market, which is offsetting most Hormuz volumes. This could be contributing to the jump in oil prices, as markets adjust to potential supply shifts.

What it means for your money

Your super will likely see a softer start to the week, given the global equity market declines and the expected dip in the ASX 200.

Your cost of living could see petrol prices under pressure from the jump in global oil prices, though the slightly weaker AUD might offer a small offset.

What to watch

The next key data point is Australia's Monthly CPI indicator, due on Wednesday (29 Jul) at 11:30am AEST. This is the one that moves the needle on RBA cash rate expectations.

Your call

The maths leans towards a cautious start to the week, with global risk-off sentiment weighing on local shares and the Aussie dollar. Watch the CPI print closely next week. If it comes in hot, the market might price in a higher chance of an RBA rate hike, which could push up variable mortgage rates. If it's soft, that pressure eases.

Today's moves

S&P 500-1.0%Nasdaq-1.4%Aussie $-0.4%Gold+0.8%Oil (WTI)+3.6%Iron ore+0.1%Copper-0.5%BHP-2.7%Fortescue+0.0%Bitcoin+0.0%

The numbers

S&P/ASX 200
8,796.70
▼ -0.5%
AUD/USD
0.6970
▼ -0.4%
Iron ore 62% Fe
98.88
▲ +0.1%
RBA cash rate
4.35%
AU 10y bond
4.91%
AU–US 10y spread
+37 bp
S&P 500
7,457.69
▼ -1.0%
Nasdaq
25,520.24
▼ -1.4%
US 10y
4.54%
▼ -3 bp
Gold
4,018.80
▲ +0.8%
WTI crude
81.78
▲ +3.6%
BTC (AUD)
92,504.00
+0.0%

What's coming up

What we're watching

RBA cash-rate path
Cash rate per latest RBA F1.1 (see today's numbers); market pricing for the next meeting tracked via OIS.
US Fed path
US 10y and Fed pricing set the global discount rate that flows into AUD and ASX valuations.
Iron ore & China demand
AU's #1 export; watch the big miners — BHP, Rio, Fortescue — as the live read on iron-ore demand.
China property & stimulus
Structural drag on AU commodity demand; watch PBoC/LPR and developer stress.
AU housing cycle
Mortgage cost = cash rate PLUS bank funding spreads; monthly Cotality + weekend auctions are the free read.
Yen carry & BoJ
AUD/JPY is a sensitive gauge of risk; a sharp yen rally can force global de-risking (cf. Aug-2024).
AI capex cycle
Drives global tech valuations and, via data-centre power/copper/uranium, several AU names.
Global risk regime
VIX + credit + equity-bond correlation define whether we're in a calm or stressed regime.

Sources

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