When using discounted cash flow analysis on a stock, should I use the same discount rate for ALL companies?

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Intern answered a question in Financial Analysis.
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Intern answered 3 months ago …

Many people would say it depends on how "risky" the investment is. The higher the risk, the higher the discount rate.

But if you're investing in a business that you understand, is in a mature industry and has competent management, then you should use the same hurdle rate/discount rate for each investment (in my opinion).

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