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Quarterly Index Rebalancing Shakes Up the Australian Market

S&P Dow Jones Indices just announced some major changes to the S&P/ASX indices as part of their September 2025 quarterly review. The rebalancing, effective before the market opens on September 22nd, will see additions and removals across the S&P/ASX 20, 50, 100, 200, and 300 indices.

While the blue-chip S&P/ASX 20 Index remains untouched, there are some notable shifts in the broader indices. In the S&P/ASX 50, technology firm TechnologyOne Limited joins the ranks, replacing Treasury Wine Estates. The S&P/ASX 100 will welcome newcomers Genesis Minerals, Netwealth Group, and Ramelius Resources, while bid farewell to Flight Centre, IDP Education, and Orora.

The S&P/ASX 200 and 300 indices are where we see the most activity, with over 20 additions and removals between them. Some of the new faces include Superloop, GQG Partners, and Greatland Resources, while familiar names like Nufarm, Kogan.com, and Coronado Global Resources are making their exit.

These changes aren't just limited to the headline indices - the broader All Ordinaries and the S&P/ASX All Technology Index are also undergoing their own rebalancing. It's clear S&P DJI is working hard to ensure these benchmarks accurately reflect the evolving Australian equity landscape.

Separately, PlaySide Studios announced the successful completion of its $1.825 million Share Purchase Plan. The funds will bolster the company's balance sheet and support marketing efforts for its upcoming gaming launches in the 2026 fiscal year. This follows the recent $6.47 million private placement and a further $0.13 million conditional placement, demonstrating PlaySide's ability to access capital markets to fuel its growth ambitions.

All in all, it's been a busy day for corporate announcements, with the S&P/ASX index rebalancing shaking up the Australian market and PlaySide Studios strengthening its financial position. Investors will no doubt be closely watching how these developments unfold in the weeks and months ahead.