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plainmoney — Market brief — Wednesday 19 Aug 2026 — 06:45 AEST

The straight answer

Wall Street closed lower overnight, with the S&P 500 down 0.7%, as global bond yields rose sharply. This risk-off mood means the ASX 200 is set for a softer open, likely pulling the Aussie dollar lower.

What's moving markets

US shares fell, with the S&P 500 down 0.7% to 7,691.8 and the tech-heavy Nasdaq down 1.3% to 26,289.7. This was driven by a jump in global bond yields, with the US 10-year yield at 4.71%. The VIX, Wall Street's fear gauge, rose 4.3% to 15.8, signalling increased investor caution.

Commodities were mixed. Iron ore slipped 0.2% to US$95, while copper fell 2.2% to US$6.458. Brent crude rose 0.3% to US$91.1, but gold fell 0.5% to US$4,394.1. Bitcoin, however, bucked the trend, rising 0.7% to 91,153.

For Australia: The ASX 200 is expected to open softer, following the lead from Wall Street. The slight dip in iron ore and copper could put some pressure on the big miners, though BHP actually rose 2.7% yesterday to 63.9. The Aussie dollar held steady at 0.7087 against the US dollar, despite the risk-off tone. The AU 10-year bond yield is at 5.01%, maintaining a +31 basis point spread over US 10-year bonds.

World & geopolitics

Global bond markets are putting governments on notice over fiscal and inflation risks, per Reuters. This is a big deal because rising bond yields increase borrowing costs for governments and companies, which then flows through to equity markets. Reuters also reported that fears of a Mideast conflict are growing, which contributed to the Nasdaq's slide and kept yields elevated. Oil prices rose, per Az\u0259rtac, likely on these geopolitical concerns.

What it means for your money

Your home loan · The 3-month bank funding spread (BABs minus OIS) is at +147 basis points. This spread is what banks pay to raise money above the expected cash rate, and it's a leading signal for mortgage pricing.

Your super · Global shares were down, which will weigh on super funds with international exposure. The ASX 200 is also expected to open softer.

Your cost of living · Brent crude rose 0.3% to US$91.1. This means petrol prices could see some upward pressure, as oil is priced in US dollars and then converted to AUD.

What to watch

The biggest local catalyst this week is the AU Labour Force data, due this Thursday (20 Aug) at 11:30am AEST. This is a tier-1 release that often moves the Aussie dollar and market expectations for the RBA cash rate.

Your call

If the labour market data comes in stronger than expected, it could signal ongoing inflation pressures, potentially leading to higher bond yields and a stronger AUD. If the print is soft, it might suggest the RBA has more room to be patient, which could see yields ease and the AUD soften. Watch the AUD/USD pair closely around the release time for the immediate market reaction.

Today's moves

S&P 500-0.7%Nasdaq-1.3%Aussie $+0.0%Gold-0.5%Oil (WTI)-0.2%Iron ore-0.2%Copper-2.2%BHP+2.7%Fortescue-0.4%Bitcoin+0.7%

The numbers

S&P/ASX 200
9,073.20
▼ -0.5%
AUD/USD
0.7087
+0.0%
Iron ore 62% Fe
94.95
▼ -0.2%
RBA cash rate
4.35%
AU 10y bond
5.01%
AU–US 10y spread
+31 bp
S&P 500
7,691.76
▼ -0.7%
Nasdaq
26,289.71
▼ -1.3%
US 10y
4.71%
▼ -2 bp
Gold
4,394.10
▼ -0.5%
WTI crude
84.33
▼ -0.2%
BTC (AUD)
91,153.00
▲ +0.7%

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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