Key Highlights

  • Information Technology (ASX:XIJ) led the supplied sector indices, rising 2.36%, supported by renewed enthusiasm for artificial-intelligence-related technology stocks.
  • Materials (ASX:XMJ) gained 1.07%, with critical-minerals and gold-related shares advancing despite mixed moves in some underlying Commodity prices.
  • Resources (ASX:XJR) rose 0.57%, while Financials (ASX:XFJ) added 0.16%, leaving only four of the 12 supplied sector indices in positive territory.
  • Energy (ASX:XEJ) was the weakest sector, falling 2.45%, as oil and coal-related shares declined despite strength in uranium stocks.
  • Consumer Discretionary (ASX:XDJ) dropped 1.53%, Utilities (ASX:XUJ) fell 1.24%, and Communication Services (ASX:XTJ) lost 1.07% as hotter Inflation increased rate concerns.

Australian equities surrendered early gains on 28 October after hotter-than-expected inflation data strengthened expectations of another Reserve Bank of Australia rate increase. The benchmark market finished close to flat, but sector performance diverged sharply: Information Technology and Materials advanced, while Energy, Consumer Discretionary and defensive sectors came under pressure. The 4.81-percentage-point gap between the strongest and weakest supplied indices highlighted the session’s uneven rotation.

Daily ASX Sector Performance Summary

Technology and Materials Lead the Advance

Information Technology was the strongest supplied sector, rising 2.36%, as the global artificial-intelligence trade regained momentum. Market reports pointed to renewed enthusiasm after Anthropic’s public-listing plans drew attention and US technology stocks strengthened. Local technology shares participated in the advance, helping the sector stand apart from a market that otherwise struggled to hold its early gains. The move suggests investors continued to favour selected growth exposures even as domestic interest-rate expectations shifted higher.

Materials rose 1.07%, supported by strength in critical-minerals and gold-related shares. Arafura Rare Earths, Aurelia Metals and Lynas Rare Earths recorded notable gains, while lithium producer Pilbara Minerals advanced after reporting record September-quarter production. The materials rally was selective: some commodity prices moved lower, indicating that stock-specific news, investor positioning and interest in strategic minerals were also important. Resources added 0.57%, while Financials rose only 0.16%, leaving gains concentrated in technology and resource-linked areas.

Inflation Data Pressures Rate-Sensitive Sectors

The key macroeconomic development was the September inflation report, which showed annual headline inflation accelerating to 4.3%, above market expectations. The data increased expectations that the Reserve Bank of Australia could raise interest rates again at its next meeting. Markets responded by marking down rate-sensitive and consumer-facing sectors, as higher borrowing costs could weigh on household budgets, Business Investment and property valuations.

Consumer Discretionary fell 1.53%, with retailers including Universal Store, Super Retail Group, JB Hi-Fi and Wesfarmers among the decliners. Consumer Staples lost 0.74%, with Coles, Metcash and Woolworths also weaker as inflation raised concerns about input costs and investors rotated away from defensive exposures. Real Estate declined 0.49%, while Utilities dropped 1.24%. Both groups are sensitive to interest rates, although their daily performance can also reflect company-specific factors and positioning.

Energy Is the Weakest Sector

Energy fell 2.45%, the largest decline among the supplied indices. Overnight weakness in oil prices and softer Australian premium coking coal futures contributed to pressure on energy-linked shares. Woodside Energy, Santos and Ampol declined, while coal producers New Hope and Yancoal also weakened. Uranium stocks were an exception, supported by renewed interest in nuclear power as part of the longer-term energy Demand outlook associated with artificial intelligence and data centres. The contrast within the sector shows that commodity exposure matters: oil, coal and uranium can respond to different supply-demand drivers.

Financials and Other Sectors Finish Mixed to Lower

Financials edged up 0.16%, making it one of only four supplied sectors to finish higher. That modest gain contrasted with the losses across Healthcare (-0.26%), Industrials (-0.69%) and Communication Services (-1.07%). Telstra weighed on Communication Services, while the wider retreat in defensive shares reflected the changing interest-rate outlook. The sector spread suggests the session was not a uniform sell-off: technology and selected resource shares attracted buying, while energy and domestic rate-sensitive groups bore the greater pressure.

Bottom Line

The 28 October session was defined by a sharp sector split. Information Technology led with a 2.36% gain, followed by Materials at 1.07% and Resources at 0.57%. Energy was the weakest sector, down 2.45%, while Consumer Discretionary and Utilities also recorded notable losses. Hotter inflation data and the resulting increase in rate-hike expectations shaped the pressure on consumer, property and defensive stocks, while renewed AI enthusiasm supported technology. Investors should monitor upcoming inflation signals, RBA communication, commodity prices and company updates to determine whether this rotation persists; one session alone does not establish a durable market trend.