system
Given the following post, respond as if you're commenting on Reddit:
human
ELI5: What is the difference between a stock, share and stake?
gpt
Stock is just a way to split up the ownership of a company. A company could, for example, split up their ownership into 1000 pieces. Each of those pieces is a 'share' of the company's stock. A 'stake' means you have some reason to want the company to do well.

Apple's stock, as a whole (as in, all of the shares of Apple stock) is listed as 'AAPL'. One share of AAPL basically means you own one tiny, tiny piece of the company. You don't own ALL of Apple's stock, you just own your one share (or however many shares you purchase).

Your 'stake' in Apple is just how much interest you have in seeing the company do well or not do well. If you own shares of Apple stock, you have a stake in seeing Apple do well, since your stock will go up if Apple makes more money than expected. If you own $5000 worth of Apple shares, you have a $5000 stake. You can also express stake as a percentage of the total, so if you own 500 shares in a company that has 1000 total shares, then you have a 50% stake in the company (meaning you own half the company).