What is Index Fund?
Updated October 22, 2026
An index fund is a low cost investment that owns a whole basket of stocks, like the S&P 500.
Instead of picking single stocks, you own a tiny slice of hundreds of companies.
Fees are usually low and it's very hands off.
It still goes up and down with the market, sometimes a lot.
Example
You buy a fund that tracks the S&P 500 and own a piece of 500 big US companies.
Questions people ask
Are index funds safe?
They're diversified, but they can still drop in market crashes.
How do I buy one?
Through a regular investing app or broker.
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