The closing price of a share is the last price at which a share is traded on a particular day. This does not mean that you will pay this price for a share. What you pay is the share’s “ask price” – the lowest price at which someone is willing to sell one unit of the share – this may change throughout the trading day. Learn more about buying and selling shares.
When it comes to the number of shares you can buy, generally the only restriction is the number of shares available for sale – the share volume.
If you are planning to buy a large amount of one company’s share, make sure you have considered how the share fits in your overall portfolio, and consider how it changes your portfolio’s diversification. Speak to a registered financial advisor to help you answer questions about investment risk.