Australian shares managed a modest gain on Wednesday, even as fresh inflation data prompted traders to sharply increase their bets on another interest rate hike from the Reserve Bank of Australia (RBA) at its November 3 meeting. The S&P/ASX 200 added 0.2%, with the financial sector doing the heavy lifting while mining stocks dragged.
The move came after Australia's third-quarter inflation report showed price pressures running hotter than expected, helped in part by higher fuel costs. That pushed the market's implied probability of a quarter-point rate increase at next week's RBA decision to nearly 85%, up from about 60% before the data was released. The shift makes the outcome of the meeting look far less certain than many had assumed just days ago.
Banks lead, miners lag
Financial stocks were the clear winners, with the sector climbing as much as 1.3%. All four of Australia's 'Big Four' banks rose between 0.8% and 1.3%, as investors bet that higher interest rates would boost their earnings. Miners, by contrast, slipped around 0.5%, with heavyweights Rio Tinto and Fortescue both down more than 0.6%.
The divergence between banks and miners is a familiar pattern when rate expectations shift. Banks tend to benefit from a higher cash rate because they can often reprice their loans faster than they raise deposit rates, which can widen their net interest margin—the difference between what they earn on loans and what they pay out on deposits. Miners, on the other hand, are more sensitive to global growth and commodity prices, which can be dampened by tighter monetary policy.
What the inflation data means
The inflation report is the latest sign that price pressures in Australia are proving stubborn, despite a series of rate increases over the past year. RBA Governor Michele Bullock has said officials will assess whether the hikes so far have done enough to cool inflation, but the new data suggests that 'higher for longer' is back on the table.
For everyday investors, the key takeaway is that interest rates may stay elevated for longer than previously expected. That has implications for mortgage holders, savers, and anyone with money in the stock market. Higher rates can slow economic growth and weigh on consumer spending, but they can also boost returns on cash and fixed-income investments.
Why bank shares rallied
The immediate reaction in bank shares highlights how quickly markets adjust to changing rate expectations. When traders mark up the expected cash rate, bank stocks often respond because lending rates tend to reset faster than many deposit rates. That can widen net interest margins, at least in the early phase of tighter policy.
So even before the RBA actually moves, shifting expectations can prompt analysts to pencil in stronger near-term profits for banks. That helps explain why the Big Four climbed while other index heavyweights lagged. The catch is that the effect can fade if deposit competition heats up or if higher rates start to slow borrowing and raise credit losses. That makes future bank results more sensitive to incoming inflation and jobs data.
What to watch next
All eyes will now turn to the RBA's November 3 decision. With the market pricing in an 85% chance of a hike, a move is widely expected, but the central bank could still surprise by holding rates steady if it judges that the recent increases are yet to fully feed through to the economy.
Investors will also be watching for any signals from Governor Bullock about the future path of rates. If inflation remains sticky, the RBA may need to keep tightening, which could put further pressure on consumer spending and housing. On the other hand, if the data starts to cool, the bank could pause again, which might support riskier assets.
For now, the Australian market is taking the news in stride, with banks providing a cushion against weakness in mining. But the broader picture is one of uncertainty, as investors weigh the risk of higher rates against the resilience of corporate earnings.
Related reading: Australian shares set to rise as Fed holds rates and Wesfarmers warns Bunnings sales cool.
