Warren Buffett famously said, 'Volatility is far from synonymous with risk.' When we think about how risky a company is, we always like to look at its use of debt, since debt overload can lead to ruin ...

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A Wal-Mart employee hands an online order to a customer. Image source: Wal-Mart. It's no secret that Wal-Mart is in the midst of a transition, as it battles against stiff competition from the likes of ...