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Highlights
- Healthcare imaging software and digital infrastructure are shaping up as two of the sturdier legs of the ASX growth theme.
- Pro Medicus and NextDC illustrate how demand for computing and clinical technology keeps compounding through the cycle.
- Market participants are tracking contract wins, capacity build-outs and the long runway behind both businesses.
Medical imaging software specialist Pro Medicus (ASX:PME), a Melbourne-founded provider of radiology viewing and archiving systems used by major hospital networks, remained a talking point across the ASX growth cohort this week as attention centred on businesses riding structural demand rather than short-lived fads. The company sits alongside a very different but complementary story in data-centre operator NextDC (ASX:NXT), whose facilities house the servers underpinning cloud computing and artificial-intelligence workloads. Together the pair capture two of the more durable engines behind the local growth theme: the digitisation of healthcare and the relentless appetite for computing capacity.
Two engines, one growth theme
The ASX growth category spans a wide range of businesses, but the most resilient tend to sit atop demand that keeps expanding regardless of the economic weather. Radiology departments will keep scanning patients, and the digital world will keep hungering for computing power. Pro Medicus and NextDC each ride one of those currents, which is why they feature so often when the market discusses compounding rather than cyclical stories.
What separates this kind of growth from the speculative variety is visibility. Long contracts, entrenched customer relationships and infrastructure that takes years to replicate all lend a degree of predictability. That does not make the shares immune to swings in sentiment, but it does give the underlying businesses a steadier footing than many earlier-stage peers.
The macro backdrop has helped too. As talk of steadier funding conditions circulated, the market grew a little more comfortable with businesses whose biggest rewards sit years ahead. Both companies fit that description, since each is spending today to capture demand that should build over a long horizon. When the cost of patience eases, that profile tends to find a warmer reception.
Pro Medicus and the digitisation of radiology
Pro Medicus supplies the software that lets radiologists view, share and store complex medical images at speed. Its technology is prized for handling enormous imaging files without the lag that once frustrated clinicians, allowing specialists to read scans from almost anywhere. Large hospital systems have adopted the platform to modernise ageing infrastructure, and each new contract tends to run for years, building a base of recurring revenue.
The company's momentum owes much to a steady cadence of agreements with sizeable health networks. Winning a marquee institution often carries a halo effect, since peers watch closely and reputations travel through the medical community. That word-of-mouth dynamic, combined with high switching costs once a system is embedded, has helped the business build an enviable position in a specialised field.
Layered on top is a growing role for automation in reading and triaging images. As tools that flag areas of concern mature, the value of a fast, reliable viewing platform rises further. The company has been careful to frame these capabilities as an aid to clinicians rather than a replacement, a distinction that resonates in a field where accuracy carries life-and-death stakes.
The economics reinforce the appeal. Because the software is delivered largely without heavy physical infrastructure, a large share of each new contract can flow through to profit once the platform is in place. That blend of high margins and long, recurring agreements is unusual, and it helps explain why the company is treated as a benchmark for quality within the local growth cohort rather than a speculative bet on a single product.
NextDC and the infrastructure of computing
NextDC operates at the physical foundation of the digital economy, building and running the data centres that host servers for cloud providers, enterprises and, increasingly, artificial-intelligence workloads. These facilities demand vast amounts of power, sophisticated cooling and careful engineering, which raises the barrier for newcomers and rewards operators with scale and know-how.
The surge in demand for computing tied to artificial intelligence has thrown a spotlight on capacity. Training and running advanced models consumes enormous resources, and the companies behind them need somewhere reliable to house that hardware. NextDC has been expanding its footprint to meet this appetite, a build-out that requires heavy upfront spending but lays the groundwork for years of contracted revenue once facilities fill.
That spending is the crux of the story. Constructing data centres ahead of demand ties up capital and weighs on near-term earnings, yet it positions the operator to capture growth as customers commit. Market participants may weigh the discipline of that expansion against the scale of the opportunity, mindful that infrastructure built today can underpin income for a long time.
Power access has become a defining constraint for the whole industry. Securing enough electricity, and increasingly clean electricity, to run and cool large facilities is now a competitive edge in its own right. Operators that lock in sites with reliable grid connections gain an advantage that is hard for rivals to match, since suitable locations are finite and approvals can be slow. That scarcity adds another layer of defensibility to the model.
Where these names sit in the market
Both companies have grown into prominent members of the local market, with NextDC carrying the profile of an ASX 200 constituent whose capacity announcements can shift sentiment across the technology complex. Their scale means they often act as reference points when the market gauges the health of the growth theme. Readers looking to understand the wider field can browse the broader set of ASX Growth Stocks spanning software, healthcare and digital infrastructure.
The contrast between the two is instructive. One delivers software with modest capital needs and high margins; the other builds physical assets that demand enormous investment. Yet both share the hallmark of the growth category, prioritising expansion and reinvestment over immediate returns to shareholders, in the belief that scale today translates into durable earnings tomorrow.
There is also a diversification argument. Pairing a high-margin, asset-light software story with a capital-heavy infrastructure story spreads exposure across very different risk profiles. If clinical technology stumbles, the drivers behind computing capacity are largely unrelated, and vice versa. That lack of overlap is part of why the two names are often mentioned in the same breath when the growth theme is dissected, despite operating worlds apart.
The role of artificial intelligence
Artificial intelligence threads through both stories, though in different ways. For the imaging specialist, it sharpens the tools clinicians rely on and reinforces demand for fast viewing platforms. For the data-centre operator, it drives raw demand for computing capacity. That shared tailwind helps explain why the two names surface together whenever the growth theme is discussed.
It is worth noting how early this shift still appears. The rollout of automation in clinical settings faces careful regulatory review, and the build-out of computing capacity is only beginning to meet the demands of the largest models. If both curves have years to run, then the businesses positioned at their base could keep compounding well beyond the current cycle, which is the crux of the long-runway case market participants often make.
Risks worth keeping in view
Neither business is without hazards. Lofty expectations leave little room for disappointment, and any slowdown in contract wins or capacity take-up could test sentiment. Heavy capital spending carries execution risk, and shifts in technology could reshape demand in ways that are hard to foresee. Market participants may assess these uncertainties alongside the long runway each company appears to enjoy.
A theme with staying power
The digitisation of healthcare and the build-out of computing capacity are not passing trends, which is what lends this corner of the growth market its resilience. Pro Medicus and NextDC approach those forces from opposite ends of the technology stack, yet both benefit from demand that shows little sign of fading. That combination has kept them near the front of the conversation whenever the local growth theme is under discussion.
As the market moves toward the next round of company updates, attention is likely to settle on contract momentum for the imaging specialist and capacity commitments for the infrastructure operator. Those signals, rather than day-to-day price action, will shape how the growth theme is judged in the months ahead. For now, the pair stand as reminders that some of the sturdiest growth on the ASX rests on the least glamorous foundations.
