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Bid-Ask Spread
trading-basics
O que significa
The difference between the highest price a buyer is willing to pay (bid) for an asset and the lowest price a seller is willing to accept (ask). Tighter spreads mean lower trading costs.
Exemplo
If an ETF has a bid price of $100 and an ask price of $100.05, the bid-ask spread is $0.05. On a 100-share trade, your total trading cost from the spread is $5.
Erro comum de iniciantes
Beginners ignore bid-ask spreads, especially on low-volume or niche ETFs. Wide spreads can eat into your returns every time you buy or sell, even if the ETF itself performs well.
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