Fred holds a portfolio with a 30% volatility. He decides to short sell a small amount of

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Fred holds a portfolio with a 30% volatility. He decides to short sell a small amount of stock with a 40% volatility and use the proceeds to invest more in his portfolio. If this transaction reduces the risk of his portfolio, what is the minimum possible correlation between the stock he shorted and his original portfolio?
Portfolio
A portfolio is a grouping of financial assets such as stocks, bonds, commodities, currencies and cash equivalents, as well as their fund counterparts, including mutual, exchange-traded and closed funds. A portfolio can also consist of non-publicly...
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Related Book For  answer-question

Corporate Finance

ISBN: 978-0134083278

4th edition

Authors: Jonathan Berk, Peter DeMarzo

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