FINC2012 Lecture Notes - Lecture 1: Mutual Fund, Discounting, Credit Risk

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24 Jul 2018
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We thus need to find the present value: companies issue or sell securities, company value is the value of the securities it has issued. Now, assuming that p0 is known and thus its expected value is just p0: E(cid:4666)r(cid:4667) = e(p(cid:883) - p(cid:882)p(cid:882) )= e(cid:4666)p(cid:883)(cid:4667) - p(cid:882) P(cid:882: when we model expected returns, we implicitly model expected prices, let x be a random variable, say intel"s possible returns, let x be one realisation, say intel"s return over january 2009 (historical/backward looking) or. Intel"s return over january 2014 (forward looking: e(x) is called the expectation operator" to find e(x), multiply all the possibly values of x by their respective probabilities and then add them up to find e(x) If a quantity is certain then its probability is 1 (guaranteed to happen: obviously an event with a probability of 0 means that the event will never" happen.

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