Here's what I consider to be the very best ASX 300 share to buy in October

I'm always on the lookout for compelling, rapidly growing businesses. This is one of them.

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Key points

  • Tuas, a growing telecommunications firm in Singapore, is rapidly expanding its subscriber base and revenue. 
  • The company is set to acquire M1, another Singaporean telco, which is expected to enhance market share, revenue, and EBITDA while benefiting earnings per share from year one.
  • Potential international expansion into larger markets like Malaysia and Indonesia could mean that Tuas becomes more profitable. 

I love finding S&P/ASX 300 Index (ASX: XKO) shares that are rapidly growing and have the potential to become significantly larger.

Tuas Ltd (ASX: TUA) is one of the businesses delivering incredible progress and could one day become one of the ASX's blue-chip shares, in my view.

It's already fairly large, with a market capitalisation that's measured in billions. But, the ASX 300 share's pace of growth and an upcoming acquisition make me believe the company has a very good future.

Strong growth

The Singaporean telecommunications business has rapidly built a subscriber base of more than 1 million mobile users in the Asian country. In the FY25 first-half period, its mobile subscribers increased by 23.7% to 1.16 million.

That subscriber growth led to the business delivering revenue growth of 33.8% to $73.2 million. This scaling is enabling a higher operating profit (EBITDA), which reached 45.2% in HY25, up from 41% in HY24.

With this core part of the company, I'm expecting its profit margins to rise as it adds more subscribers to the total base.

The organic growth of the Tuas business is impressive, and the company is about to become significantly bigger once it completes an acquisition of one of its competitors.

Acquisition

The ASX 300 share is acquiring M1, another Singapore-based telco.

By making this acquisition, Tuas will significantly increase its mobile and broadband market shares, revenue, and EBITDA, giving it stronger scale to invest in growth while also taking out a major competitor in the market.

The acquisition is expected to be highly beneficial for earnings per share (EPS) of Tuas from the first year. Excluding ICT, M1 had net profit after tax (NPAT) of S$74.3 million in the last twelve months, excluding any pro-forma synergies or financing impacts.

International expansion?

While Singapore doesn't have a large population, I'm optimistic the ASX 300 share can expand to other countries that have much larger addressable markets than Singapore.

Its nearby neighbours of Malaysia and Indonesia would make a lot of sense to create a presence there because Singapore only has a fraction of the population size of those two countries.

If Tuas could achieve a similar market share in either of those countries as it does now (prior to the M1 acquisition), then it could become a significantly more profitable business than it is today, and I believe it'd be well on its way to becoming an ASX blue-chip share.

Under the leadership of David Teoh, I think this ASX 300 share has a very promising future.

Motley Fool contributor Tristan Harrison has positions in Tuas. The Motley Fool Australia's parent company Motley Fool Holdings Inc. has no position in any of the stocks mentioned. The Motley Fool Australia has no position in any of the stocks mentioned. The Motley Fool has a disclosure policy. This article contains general investment advice only (under AFSL 400691). Authorised by Scott Phillips.

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