Expense ratio: The yearly fee a fund charges.
A 0.05% ratio costs $0.50 per $1,000 a year; a 1.5% one costs $15. Over decades that difference can eat a huge chunk of your returns.
Money — part of the free InvestED Academy investing glossary for teens.
Practise with real prices and fake money in the market simulator, or start the free course at module one.