Top ASX Gainers Today: 3 Stocks Catching Market Attention

Tuesday, 27 October 2026

The S&P/ASX 200 closed 0.46% higher at 8,850.1 on Tuesday, supported by a strong materials sector and a rebound in AI-related stocks as sentiment around Anthropic improved.

BHP Group (ASX: BHP) climbed 4.26%, while Rio Tinto (ASX: RIO) gained 2.53%.

However, some of the market's biggest percentage gainers came from companies exposed to AI infrastructure and a casino operator reporting improved quarterly earnings.

Here are three ASX stocks that attracted market attention today.

1. Southern Cross Electrical Engineering (ASX: SXE) — Up 13.56%

Closing price: Approximately $4.02

Southern Cross Electrical Engineering (ASX: SXE) led the broader market gainers list, climbing 13.56% to close around $4.02.

The electrical and engineering contractor has exposure to data-centre and infrastructure projects, positioning it to benefit from demand for the power systems and electrical fit-outs required by large computing facilities.

The stock's sharp rise coincided with a recovery in AI infrastructure sentiment, as investors returned to companies potentially benefiting from continued investment in data centres.

2. The Star Entertainment Group (ASX: SGR) — Up 13.04%

Closing price: Approximately $0.13

The Star Entertainment Group (ASX: SGR) gained 13.04% after reporting positive first-quarter FY27 group EBITDA of $12 million, representing a $25 million improvement on the prior corresponding period.

The company also reported a 5% increase in combined Sydney and Gold Coast revenue and held $239 million in cash.

The improved operating result offered investors a potential sign of progress in the casino operator's turnaround efforts, helping drive a substantial move in its share price.

3. Megaport (ASX: MP1) — Up 9.60%

Closing price: $17.58

Megaport (ASX: MP1), a cloud connectivity provider with exposure to AI infrastructure, rose 9.60% to close at $17.58.

The company has been expanding its Latitude GPU and computing offering, while previously announced AI infrastructure contracts have supported its FY27 outlook.

The broader recovery in AI-related stocks provided a favourable backdrop for Megaport, making it one of the stronger performers among larger technology companies during the session.

Other ASX Stocks That Gained Attention

Several other companies also recorded strong share price movements on Tuesday.

• GR Engineering (ASX: GNG) and SKS Technologies (ASX: SKS) posted double-digit gains, benefiting from investor interest in infrastructure and data-centre-related businesses.

• NGX, ELK Range Mining and Talius Group recorded larger percentage movements among smaller companies, with company-specific developments including project acquisitions and drilling results contributing to interest.

These movements highlight how individual company announcements and broader sector sentiment can influence daily ASX performance.

What Drove the ASX Gainers Today?

Tuesday's strongest performers reflected two key themes.

AI infrastructure regained investor attention. Southern Cross Electrical Engineering, Megaport and other infrastructure-related companies benefited from renewed interest in businesses connected to data centres, computing capacity and AI investment.

Star Entertainment delivered an improved quarterly result. Its positive first-quarter EBITDA and higher combined revenue provided a company-specific catalyst for its share price.

Meanwhile, gains in major materials stocks, including BHP and Rio Tinto, helped lift the broader market.

For investors tracking the biggest ASX gainers, the key question is whether these share price movements reflect temporary market sentiment or developments that could support longer-term business performance.

This article is for market commentary and informational purposes only. It is not financial advice or a recommendation to buy or sell any security. Share prices and market rankings can change rapidly. Check the latest ASX data and official company announcements before making investment decisions.

(source:company Reports)