Some companies are built to benefit from short-term trends. Others are built to endure.
When I think about ASX 200 shares I could happily hold for decades, I usually look for businesses with strong competitive positions, long growth runways, and industries that should still look attractive many years from now.
With that in mind, here are three shares that I believe have the qualities needed to be outstanding long-term investments.
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Sigma Healthcare Ltd (ASX: SIG)
The healthcare sector has always appealed to me as a long-term investment theme. Demand for medicines and pharmacy services tends to grow steadily as populations expand and age.
That is why I find Sigma Healthcare such an interesting business today.
The company recently transformed itself through its merger with Chemist Warehouse, creating what is now one of the most powerful pharmacy platforms in Australia. By combining Sigma's wholesale distribution network with Chemist Warehouse's dominant retail brand, the business now has a much broader footprint across the healthcare supply chain.
This kind of vertical integration can be incredibly valuable. It gives the group scale advantages, stronger relationships with suppliers, and the ability to reach millions of customers through a well-established pharmacy network.
Healthcare demand isn't going away anytime soon. And with Chemist Warehouse's brand power now part of the business, Sigma looks positioned to benefit from that demand for many years to come.
Xero Ltd (ASX: XRO)
When I look at ASX 200 shares that have the potential to compound value over decades, I'm often drawn to businesses that become embedded in how people run their companies.
That is exactly what Xero has managed to achieve.
The company's accounting platform has become a core operating system for 4.6 million small businesses around the world. Once a business adopts software like this, switching away becomes difficult. Financial records, payroll systems, tax reporting, and accounting workflows all become intertwined with the platform.
That kind of stickiness is incredibly valuable.
What excites me most about Xero is that its growth opportunity still looks large. Cloud accounting adoption continues to expand globally, and the company is steadily building out an ecosystem of services that can sit on top of its core platform.
In other words, it isn't just accounting software anymore. It is becoming a broader operating platform for small businesses.
Netwealth Group Ltd (ASX: NWL)
Another type of business I like to own for the long term is one that benefits from structural changes in an industry.
For me, Netwealth fits that description perfectly.
Over the past decade, the Australian wealth management industry has been shifting away from legacy platforms and toward modern digital solutions. Financial advisers increasingly want platforms that are easier to use, more flexible, and better integrated with modern financial tools.
Netwealth has positioned itself right at the centre of that shift.
The ASX 200 share continues to attract strong inflows as advisers migrate client funds onto its platform. As those funds under administration grow, the business benefits from powerful operating leverage. The platform model means that once the infrastructure is built, additional funds can generate significant incremental revenue.
Australia's retirement system also provides a long runway for growth. As superannuation balances rise and more Australians seek financial advice, platforms like Netwealth could continue expanding for many years.
Foolish takeaway
Finding companies that can be held for decades isn't easy. Markets change, industries evolve, and even great businesses can stumble.
But when I look at Sigma, Xero, and Netwealth, I see three ASX 200 shares operating in industries with powerful long-term tailwinds. Each has a strong position in its market and a business model that could continue creating value for many years.
