Sydney, March 23, 2026, 02:58 AEDT.
National Australia Bank shares closed Friday at A$45.57, down 2.25%, as the S&P/ASX 200 fell 0.8% to 8,428.40, a four-month low. LSEG data showed NAB lagged its major peers, with Westpac down 1.05%, ANZ off 1.13% and Commonwealth Bank lower by 0.97%. 1
The move matters because NAB had been trading near record territory after its February update. NAB said first-quarter cash earnings — its preferred profit measure — rose 16% to A$2.02 billion, and Friday’s finish leaves the stock roughly 5% below the A$47.96 peak it hit on Feb. 18. 2
The drop tracked a wider market move rather than a company earnings trigger. A Friday market report showed Australian shares ended the week at a four-month low as the Iran war kept oil prices elevated and investors weighed the risk of more Reserve Bank of Australia tightening. 3
The RBA raised its cash rate to 4.10% on March 17 in a 5-4 vote, its closest since it began publishing tallies. Belinda Allen, head of Australian economics at Commonwealth Bank, said “The domestic data flow alone justified a rate hike today,” while Westpac chief economist Luci Ellis said the path of the Middle East conflict would be crucial for whether another move follows. 4
Tony Sycamore, an IG market analyst, wrote on Friday that traders now price 67 basis points, or 0.67 percentage point, of extra RBA tightening across the rest of 2026, with another 18 basis points already priced for May. For bank stocks, that is the awkward trade: higher rates can help lending margins, but they can also cool credit demand and raise stress on borrowers. 5
NAB’s February result had briefly put it back near the top of the sector. The bank said business-banking volumes rose 7% and housing loan volumes climbed 5%, even as competition with Commonwealth Bank and Westpac remained intense and Westpac and ANZ also beat first-quarter profit estimates during the earnings season. 2
The risk now is that the macro squeeze worsens. A Sunday oil market report said Brent settled Friday at $112.19 a barrel and could rise again when markets reopen; Sycamore called the standoff a “48-hour ticking time bomb of elevated uncertainty over markets”, and AMP chief economist Shane Oliver said global and Australian shares were at “high risk of further falls in the near term” if the conflict drags on. 6
There is one brake on the worst-case view. Energy Minister Chris Bowen said on Sunday there were no immediate plans to ration fuel and that Australia still had 38 days of petrol and 30 days of diesel and jet fuel, despite six cancelled shipments from Asia. The next hard test for NAB investors is Wednesday’s February CPI report, which IG says will shape expectations ahead of the May RBA meeting; another upside surprise would keep pressure on the whole bank trade. 7
