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plainmoney — Market brief — Tuesday 29 Sep 2026 — 06:45 AEST

The straight answer

Wall Street closed lower, with the S&P 500 down 0.8%, as rising oil prices and US Treasury yields squeezed markets. This sets the ASX 200 up for a softer open, likely down around 0.4%, with the Aussie dollar holding steady at 0.7021.

What's moving markets

US equities saw a broad sell-off, with the S&P 500 falling 0.8% to 7,683.7, the Nasdaq down 0.9% to 26,820.4, and the Dow losing 0.7% to 51,481.5. This risk-off sentiment was reflected in the VIX, which jumped 8.1% to 16.1. US 10-year bond yields remained high at 5.24%.

In commodities, Brent crude fell 5.5% to 98.6, while WTI crude rose 0.9% to 93.2. Gold dropped 4.0% to 4,149. Iron ore was largely flat, down 0.1% to 97.1. Bitcoin also saw a dip, falling 1.4% to 118,938 AUD.

For Australia: The ASX 200 is expected to open softer, following the lead from Wall Street. The flat iron ore price means the big miners like BHP (−1.5%), Rio Tinto (−1.1%), and Fortescue (−0.7%) will likely see continued pressure. The AUD/USD held steady at 0.7021, with the AU–US 10-year bond spread at +0 bp, suggesting no major shift in relative yield attractiveness.

World & geopolitics

Global markets are under pressure from rising US-Iran geopolitical uncertainties, per Anadolu Ajansı. This tension is lifting oil prices and bond yields, which in turn is squeezing equity markets, as Reuters reported. Japan's currency diplomat Mimura urged markets to heed "very clear" warnings on the yen, per Reuters, a reminder that sharp yen moves can trigger global de-risking.

What it means for your money

Your super will likely see a softer start to the day, reflecting the global equity downturn. Your cost of living could see mixed signals on petrol, with Brent crude down but WTI up, and the AUD holding steady.

What to watch

The biggest local catalyst this week is the AU Monthly CPI indicator, due this Wednesday (30 Sep), 11:30am AEST. This inflation print is the one that moves your repayments this year. The market will be watching for any surprises.

Your call

The maths leans towards continued caution, given the global risk-off tone and geopolitical tensions. If the CPI indicator comes in hotter than expected, expect bond yields to rise further, putting more pressure on the RBA and potentially your mortgage repayments. If it's softer, that could ease some of the pressure.

Today's moves

S&P 500-0.8%Nasdaq-0.9%Aussie $+0.2%Gold-4.0%Oil (WTI)+0.9%Iron ore-0.1%Copper-1.3%BHP-1.5%Fortescue-0.7%Bitcoin-1.4%

The numbers

S&P/ASX 200
8,665.00
▼ -0.4%
AUD/USD
0.7021
▲ +0.2%
Iron ore 62% Fe
97.06
▼ -0.1%
RBA cash rate
4.35%
AU 10y bond
5.25%
AU–US 10y spread
+0 bp
S&P 500
7,683.69
▼ -0.8%
Nasdaq
26,820.38
▼ -0.9%
US 10y
5.24%
▲ +6 bp
Gold
4,149.00
▼ -4.0%
WTI crude
93.24
▲ +0.9%
BTC (AUD)
118,938.00
▼ -1.4%

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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