Home / Learn / What is the best long-term investment?
Learn

What is the best long-term investment?

Over decades, the winner isn't usually the most exciting asset — it's the one you can hold through the bad years while compounding does the work. Here's how the main options compare.

By Nathan Wickham-Hurd · Founder, Oak Growth · First-class Economics & Finance, MBA · Last reviewed July 2026

Why time horizon changes everything

Over a year, almost anything can happen — markets fall, good companies drop 40%. Over twenty years, the picture narrows considerably: assets that generate growing earnings tend to win, and the ones that generate nothing tend not to. That’s the core reason long-term investors favour productive assets.

The main options

Broad index funds and ETFs

Historically the default answer, and a sound one. You own hundreds of companies at very low cost, no stock-picking required. Diversification means no single failure sinks you — see passive investing.

Individual quality stocks

Higher potential return, higher risk, more work. Buying a genuinely strong business below its worth can beat the index — but only if you can judge value. This is where the research matters.

Property

Can perform well over decades, but it's illiquid, concentrated in one asset, and carries costs and hassle that funds don't.

The thing that actually drives the outcome

Compounding. Returns earning returns is what turns steady contributions into a large sum, and it rewards time in the market far more than clever timing. Missing a handful of the market’s best days over decades can badly damage the final figure — which is an argument for staying invested rather than trading in and out.

No investment is guaranteed. Past performance doesn’t predict future results, and long-term averages hide years of painful declines along the way. The right answer also depends on your timeframe, and on how much volatility you can actually tolerate without selling at the worst moment.

A common structure

Many long-term investors use both: a diversified index base for reliable, low-cost growth, and a smaller allocation to individual companies bought at a margin of safety. The base does the compounding; the stock picks aim to add to it.

Build the stock-picking layer properly

Oak Growth helps you find quality companies trading below their worth — the active layer that sits on top of a long-term index base.

Explore Oak Growth

Common questions

What is the best investment for the long term?

Historically, broad, low-cost index funds have been a strong default for long-term growth thanks to diversification and low fees. Some investors add individual quality companies bought below intrinsic value to try to do better. Past performance is not a guide to the future.

How long should you hold an investment?

Long-term investing generally means years to decades, not months. Longer horizons give compounding more time to work and reduce the impact of short-term volatility.

Are stocks or property better long term?

Both can perform well over decades. Stocks are more liquid, more diversifiable and easier to buy in small amounts; property is concentrated, illiquid and carries higher costs, though some investors value its tangibility and rental income.