When investors buy on margin, it means they're borrowing from their broker to partly finance the stock purchase. It's a risky proposition because their investment is used as collateral, but there's a potential for higher... More »

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Contribution margin is the per-unit profit of a product. It is calculated by subtracting all variable costs to sell a good from its sale price. For example, if a product sells for $20 and its variable costs total $12, it... More »

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To purchase one share of a stock, open a broker account, sign an agreement, choose the stock of your preference, fund the purchase, and pay the transaction fee, according to NBC News. The exact method for making a stock ... More »

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As of 2015, some ways to purchase stock without a broker include taking in part of a company's direct stock purchase plan or using the company's dividend reinvesting plan, according to Forbes. These plans allow you to sa... More »

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Doubling your investment is possible in ways that range from taking advantage to employer match contributions into a retirement fund to using stock options and margin transactions to grow your account rapidly, notes Inve... More »

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Berkshire Hathaway, the publicly traded conglomerate holding company presided over by famed investor Warren Buffet, is the most expensive stock traded on the New York Stock Exchange by a wide margin. As of October 2015, ... More »

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To buy shares of 3M stock, customers can open a broker account online with brokers such as Scottrade or E-Trade. Investors can enter the company’s stock ticker symbol, MMM, in the broker’s search box when purchasing shar... More »

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