Diversification: spreading your risk, and how to start with little money
Why owning many companies instead of one reduces risk, the ways to diversify (companies, sectors, countries, time), and how to start with small amounts.
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Diversification means not putting all your eggs in one basket. When your money is spread across many companies, the failure of one of them hurts, but it does not sink you.
Why it works
Every company can have a bad year, a failed product or a scandal. If it is 50% of what you own, a 60% fall in its price costs you 30%. If it is 2%, the same fall costs you 1.2%. Diversification does not stop prices from falling; it limits how much any single mistake or piece of bad luck can cost you.
Diversification reduces the risk that is specific to one company. It does not remove the risk of the whole market falling, which affects almost everything at once.
The ways to diversify
- Companies. Owning many businesses rather than a few.
- Sectors. Banks, technology, energy and consumer goods respond differently to the same news. Ten banks are not diversified.
- Countries and currencies. An economy or a currency can have a long bad period on its own.
- Time. Investing a fixed amount regularly instead of everything on one day spreads the price you pay over good and bad moments.
Funds and ETFs
The simplest way to own hundreds of companies at once is a fund, in particular an index fund or an ETF (a fund that trades on the exchange like a share). One purchase gives you a small slice of every company in an index. Check the fund’s annual cost: as the compound interest guide shows, it matters over decades.
Starting with little money
- Regular contributions. Small amounts every month add up, and they give compound interest time to work.
- Fractional shares. Some brokers let you buy a part of a share, so the price of one share is no longer a barrier.
- Watch the fixed costs. A €5 commission on a €50 purchase is 10%. With small amounts, the cost per order matters more than anything else.
Diversified is not the same as random
Owning many things you do not understand is not the goal. Diversification works best alongside knowing what you own: what each company does, how it makes money and what could go wrong. That is where reading its accounts comes in.
