ASX market update September 2026: three central banks moved and ours is next
The Federal Reserve raised interest rates on Wednesday for the first time since 2023. The Bank of Japan followed on Friday with its highest policy rate in 31 years. The Bank of England held, but three of its nine members voted to move. The ASX 200 closed the week at 8,731.2, down 0.1%. This ASX market update September 2026 explains why that flat number is the least interesting thing that happened.
Global markets: the Fed moved first, then Tokyo
The Federal Open Market Committee lifted its target range 25 basis points to 3.75% to 4.00% on 16 September, a unanimous 12 to 0 decision. The statement was brief and the language was plain: inflation remains elevated, and the action supports a timelier return to the 2% goal. The updated projections matter more than the move itself. Sixteen of eighteen participants now expect at least one further increase this year.
| US Markets | % Change | Rest of the World | % Change |
|---|---|---|---|
| The Dow Jones | -1.7% | STOXX Europe 600 | -0.6% |
| S&P 500 | -0.1% | Hang Seng | -0.2% |
| Nasdaq | +0.7% | Nikkei 225 | +1.6% |
The US 10 year Treasury yield touched 5.04% during the week, its highest since 2007, and finished at 5.00%. Equities absorbed that with a composure that is hard to explain. The Dow fell 1.7% to 51,682.64 in a third consecutive losing week, but the S&P 500 finished at 7,650.50, effectively where it started, and the Nasdaq rose 0.7% to 26,522.55. That happened despite a heavy Monday selloff in semiconductors, triggered by an essay from Anthropic’s Dario Amodei calling on the industry to slow frontier model development. The PHLX Semiconductor Index fell 5.9% that session and still ended the week higher.
Japan was the outlier. The Nikkei 225 gained 1.6% and rose 1.4% on Friday itself, after a 7 to 2 vote and no commitment to go further read as less hawkish than feared. The yen weakened to around 157 to the US dollar. Oil reversed last week’s direction: Brent pushed above US$109 after attacks on Saudi energy infrastructure shut the East-West Pipeline, then fell for three straight sessions as confidence grew that exports would hold, settling at US$103.87.
The ASX: flat on the surface, split underneath
Ten points separated Monday’s open from Friday’s close. That is the fifth losing week in six, and the index now sits 6.1% below its early August record of 9,296.7.
| Best 3 movers | % Change | Worst 3 movers | % Change |
|---|---|---|---|
| 4DX | +28.3% | MIN | -11.0% |
| TLX | +13.9% | ELV | -10.5% |
| IPX | +13.6% | LLC | -10.3% |
Health care rose 3.8%, the only sector to gain meaningfully, carrying 4DMedical and Telix Pharmaceuticals with it. Neither company announced anything that explains a move of that size. IperionX is the exception: it told the market on Wednesday that GenX, its continuous titanium production platform, had been validated across four production campaigns in Virginia, with a sixfold throughput increase and 75% lower energy intensity. At the other end, Mineral Resources and Elevra Lithium fell with a lithium complex in which Chinese carbonate futures hit their lowest close of the year, and Lendlease fell with real estate, down 1.9% and the weakest sector on the board. None of those three explained itself either, and we would rather say that than invent a reason.
What this ASX market update September 2026 says about the RBA
Last week I wrote about a European central bank cornered into raising rates by an oil shock it could not influence. This week the Federal Reserve did the same thing, and the Fed was the one that had been holding out.
What I keep returning to is how little equities cared. A first increase in three years, a 10 year yield above 5%, and the S&P 500 finished the week roughly unchanged. That is either a market that has concluded this tightening cycle will be short, or a market that has not finished pricing it. I do not think it can be both, and I would not want to be positioned as though the first is certain.
Our own index makes the point more honestly. Down 0.1% sounds like a week in which nothing happened. Real estate fell 1.9%, and the index is 6.1% below its August high. The damage is not in the headline number. It is in everything that was priced for cheaper money, which is most of what has led the market for the past two years.
Governor Michele Bullock told a parliamentary committee on Friday that some of the upside inflation risks flagged in August now appear to be materialising. The cash rate stays at 4.35% until the Board meets on 29 September, and market pricing for a rise at that meeting moved to roughly 90% during her testimony. Whether it moves then or in November matters less than the direction, which is now unambiguous across four major central banks. Income that depends on a forecast is worth less this quarter than income written into a contract.
Book a strategy call at barkerwealth.com.au to talk through how a rising rate path sits against your own positioning. You can also read last week’s market update or more about how we work with wholesale investors.
This commentary is intended for general information only and does not constitute personal financial advice. You should consider your own objectives, financial situation and needs before making any investment decisions. Barker Wealth Management Pty Ltd ABN 46 695 875 962, trading as Barker Wealth, holds Australian Financial Services Licence (AFSL) 700297. Your adviser is Joshua Barker (AR 1274752).