March is often a good time to reassess portfolios. Reporting season has just wrapped up, expectations have been reset, and we have a clearer view of how businesses are tracking into the second half of the year.
That said, here are three ASX 200 stocks I'd consider buying in March.
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Megaport Ltd (ASX: MP1)
Megaport operates a global network-as-a-service platform, helping businesses connect to cloud providers and data centres on demand. As enterprise workloads continue shifting to the cloud, flexible connectivity remains a strong structural tailwind.
What makes the story more compelling right now, in my view, is the Latitude.sh acquisition. Megaport described it as "highly strategic and financially compelling." Latitude adds a compute-as-a-service capability, giving Megaport exposure to a US$13 billion compute market that is expected to grow at around 20% annually.
Importantly, Latitude was already profitable, with EBITDA margins of about 50% and annual recurring revenue growth above 50%. That adds a high-growth, high-margin layer to Megaport's model.
I think this meaningfully broadens Megaport's opportunity beyond connectivity and strengthens its long-term growth outlook without fundamentally changing its capital-light model.
Catapult Sports Ltd (ASX: CAT)
Catapult is an ASX 200 stock that is building a powerful position in sports performance technology.
Its platform provides elite and professional teams with data analytics, athlete monitoring, video analysis, and performance insights. Once embedded, these systems tend to become deeply integrated into coaching and operational workflows, creating sticky recurring revenue.
The company has been expanding into new verticals and broadening its product suite beyond its original wearable technology. As annual contract values grow and the platform scales globally, there is scope for margin expansion.
I see Catapult as a business that is still relatively early in monetising its full opportunity. If it continues executing well, I think it has the potential to deliver strong earnings growth over the next few years.
Netwealth Group Ltd (ASX: NWL)
Netwealth is another structural growth story, this time in financial services.
This ASX 200 stock operates a wealth management platform that benefits from long-term trends in superannuation growth and the increasing complexity of financial advice. As advisers and investors seek more sophisticated and transparent solutions, platforms like Netwealth continue to capture flows.
What I find attractive about Netwealth is the scalability of the model. As funds under administration grow, operating leverage can improve margins and earnings. The shift towards digital wealth platforms is not a short-term trend, it is a multi-decade structural shift.
For investors seeking exposure to the growing pool of Australian retirement savings, Netwealth offers a direct way to participate in that expansion.
Foolish takeaway
Megaport, Catapult, and Netwealth operate in very different industries, but they share a common theme: scalable business models with long-term growth drivers.
For investors looking to add growth exposure in March, I think these three ASX 200 stocks stand out as star performers in the making.
