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What is a stock?
A stock is a share in the ownership of a company. Stocks represent a claim on the company's assets and earnings. As you acquire more stocks, your ownership stake in the company becomes greater. Whether you say shares, equity, or stock, it all means the same thing.

Being an Owner holding a company's stock means that you are one of the many owners (shareholders) of a company and, as such, you have a claim (albeit usually very small) to everything the company owns. Yes, this means that technically you own a tiny sliver of every piece of furniture, every trademark, and every contract of the company. As an owner, you are entitled to your share of the company's earnings as well as any voting rights attached to the stock.